The high cost of low price is quickly realized when it quickly becomes a higher price in the end. Wise words spoken by my late father, a master mechanic for more than 50 years. Good job Ivan!
I see this at least 10 times a year. Guys come in and they’re angry when I tell them it’s a fuel pump, then they argue that they just replaced it. Around here you can get the Air-Tex pump for $30 less and it comes with the lifetime warranty, so most people choose that. They don’t think about the fact that changing a fuel pump every three months sucks.
Air tex and others POS junk . I refuse to install. Delphi,AC Delco ,Bosch, ND,Carter ok . Filter on bottom usually full of grit wipes out many . I suck tank dry wipe it out when possible. Just did a 1989 GMC 2500. Had tons of debris in tank filter was black clogged.
I had a customer bring me his truck. He kept throwing parts at the engine miss. Found he bought the cheapest distributor cap, burned a hole between two of the closest wires towers. You could barely see it. I got him the best ones i could get, much better than cheaper. The truck is still running good, no more misfire
Just did one yesterday. Cut a access hole in bed with cover . Takes 15 minutes to change now . Delphi lasted 150,000+ miles . I have 380,000 on mine . My 3rd pump . Old Chevy trick tip. If truck won't start bang on bottom of tank hard with hammer and fuel pump usually comes on again to get home . Did this many times .
Took THREE fuel pumps from ebay to keep my 1999 F150 running over a couple weeks. First failure they sent a replacement assembly while waiting I bought another. it also failed within a week, got a replacement for it the pump only. It was the joke of the neighborhood as we removed the bed once more, then again Anyway, it's been a year or two now and so far pump number 3 is still working and I have a spare in a box on a shelf for when it quits. Like others I've had good and bad experiences with cheap after market parts. Funny thing is I don't need the money I saved now day;s, hell, I can write a check for a new pickup but there was time I had to live poor and I still live that way today.
My 95 F150 still has it's original pumps. Love the fact that they put 2 tanks in these trucks. If one finally bites the dust, simply switch to the other. No chinesium for me! Motorcraft is the only way to go
Very cool! I always check fuel pressure. When I bought my car (used) I was getting misfires and lean conditions. Someone changed the fuel pump but only replace the pump not the assembly. They didn't properly connect the pump to the fuel line in the tank and I was losing pressure in the tank. My neighbor replaced the pump assembly and filter for me and my car ran like new!! Went from 12psi to 55psi.
Great job, Ivan! Clever way to check the spider regulator - left no doubts! It's a shame that there isn't a proper access to the fuel pump - a simple job becomes a major work.
There's an open short red wire and connector by the under hood fuse box that goes to the pump, we tested fuel pump current draw at this wire at dealerships.
Love those classic Chevrolet trucks. Your customers have some beautiful vehicles I use to drive. Owner of 34 classic vehicles that were near Bulletproof. Not todays Junk. Great video.again.
This was a walk in the park compared to most of your job's. I never miss a video. Ivan will tackle anything. Don't ever stop doing what you do. This world needs you and there might be some mechanics that could fix things, but none explain it like you, that gives me hope that I could even do some things that I might try if i could see and I wasn't to old now for the most part, but I do still try
I have a 97 k1500 350cid. Had to replace the fuel pump many years ago. OEM only! The drive train is still perfect, but the frame is shot. Fired it up over a year ago just to move it while working on the driveway. It still runs perfectly. Let it warm up to op temp and NO money light on. Wish the frame was still good. I'd be driving it every day if it was. I watch all your videos regardless of what you're working on. Never to old to learn.😊
@@annewilliamson2429 I just plated a rusted frame welded 1/4 -+ steel all over long overlaps . If it's not to bad a good welder using 6011 1/8 rods can repair it. Unless it's up front by suspension steering. To risky dangerous. I spray frames with fluid film drain oil evey year in road salt water areas. We have road salt and ocean salt on beach on long island new York.
I don't really buy the whole "OEM" only. I put a oil level sensor in a BMW recently, made by Hella, a brand which makes a ton of OE parts for Euro cars. The BWM logoi and BMW part number were milled off it. It's the same part, at 30% of OE price. I put a water pump on a Chevy Cobalt the other day. I bought the Melling pump; it had two milling spots on it, which conveniently line up to the GM logo and P/N from the OE part, but also 50% of the price. *shrug*. I'd rather buy a good part from a reputable brand than pay the OE markup. It's not like GM or ACDelco actually make any of these parts themselves - ACDelco spark plugs are made by Autolite and NGK, for example. Why pay the middle man markup? Just buy direct!
I did look for a used frame and found nothing any better. It does have one patch about 3 foot long that a buddy of mine made for it about 8 years ago. No one in this area knew anything about fluid film back then. Now the frame is too far gone. Trust me, I know. I would rather sell the truck to someone that could make use of the drive train for their own project. I'm too old now to fool with it.
Like the guy from SMA says just because its new does not mean is good Mr o from sma is a good guy I love to watch him work I also watch all your videos love what you guys do
Nice diag. I'm partial to these kinds of videos since I own a 98 Chevy truck with a 5.7L and my fiancé owns a 97 GMC with a 5.7L. I hate to say it, but the Delphi pumps are not that great these days. We put one in the 97 and it only lasted 11,000 miles and about a year and a half. We changed the fuel filter at the same time. This truck also only has 75,000 original miles. We installed another Delphi since the first one had a lifetime warranty and we could not find an OEM pump for it. I'm in a lot of groups for these trucks and a lot of people who have used the Delphi pumps had pump failures pretty early like we did. Here is a tip for the ground for these pumps. The ground for the pump is on the frame near the pump. The original ground straps up front on the passenger side inside the engine compartment that go from the frame to the body and the frame to the engine are very small and thin braided ground straps. These tend to corrode and break pretty easily. The replacement upgraded ground straps are way bigger and thicker. I have installed these bigger and thicker ground straps on both trucks mentioned as well as my 98 Chevy truck with the 7.4L.
The fuel pump probably had leakage between the impeller and pump housing, since it was spinning faster than the known good pump and had less amperage, so the load on the pump was lower than normal. This is opposite to a restricted fuel filter, where the pump will tend to draw more amps and spin slower.
Classic Chinese junk pump! I have a fuel pressure/volume tester. I've seen fuel pumps come up in pressure but be low in volume. Didn't have a scope back then. Power and ground were both good, but that volume reading indicated a bad pump. You could also squeeze the hose from the tester to the rail to further test the pump. Great tool. Great diagnose Ivan.
Hi Ivan, Another fine diagnosis pinpointing the exact cause of the problem. I like how the customer removed the bed of the pickup to gain access to the fuel pump. Wonder if the previous owner bought a Chinesium pump.🙂 I live just west of Philly so you know the outside temps we are experiencing.. I'm babysitting a cranky boiler for our heat. A 6 year old Honeywell Aquastat is failing and not regulating the low and high temperatures settings in the boiler. The original Honeywell Aquastat failed in the same way but lasted 55 years. Have to check on the boiler every hour to maintain some heat until the new part arrives tomorrow or Thursday. You and Amanda stay safe and warm.
I remember the good old days when the fuel pump ran off a cam lobe. You could buy a cheap 10 to 15 dollar electric fuel pump and plum it in if you wanted to. Just wire it to ignition on in start and run position and away you go. Plumb in a tee with a valve and have easy access to gas for your lawnmower not the safest but as long as you know what you are doing it works fine.
@@ferrumignisIf the thing has the most suitable carburettor on it, it will be fine. It's maxed out performance set ups that give trouble. Or whatever they did to the Lotii !
That's how the typical aircraft piston engine works. Engine-driven fuel pump as the primary and gravity (high wing) or electric fuel pump (low wing) as a backup for takeoff, landing, and when switching fuel tanks.
I helped a friend replace the fuel pump in his old Chevy once. In his case, the pump was delivering nothing. It turned out that a hose connecting the pump itself to the upper half had been eaten up by the gas. Imagine a connecting hose in the gas tank, that can't take being bathed in gasoline. It wouldn't surprise me if this pump were starting to leak at that point. Would explain why the pump isn't working that hard.
Fun fact Ivan…..Cash for Clunker’s program had more Chevy K1500’s bought and destroyed than any other car. For that reason 1000’s of these were destroyed/crushed which is why they suddenly became “rare”.
My son had a 94 s 10 he needed a new fuel pump the one they put in was a 40 pound pump barley worked I looked up the gm part number and he really needed a 65 pound pump ,its still running to this day with the oem part by Delco .
That was interesting. When you said it was running faster, I was suspecting restricted intake. I wouldn't expect a pump to be drawing less current, no significant voltage drop in the wiring, and still have an even amp pattern. Ah, cheap parts.
It still amazes me as a mechanic with 40 years of experience how much money people are willing to throw at a vehicle in parts instead of paying for diagnostics. Paying the diagnostic fee and fixing the problem is usually much cheaper in the long run.
Good fix Ivan. Definitely the man. And looks like you've "been there got the t-shirt" on those GM spider injection systems. I think the intake gasket R&R was one of my favorite money makers in the day.
I’ve seen the rubber hose that connects the fuel pump to the metal line inside the tank ruptured and caused similar issues. Pump was just replaced with a new hose
I had a 98. for some reason about once a year she would get sluggish. Shift down for a hill rev up but would not accelerate. Every time it was the frame mounted fuel filter dirty. Replace and ran fine. I bought fuel at a reputable station and when the fuel pump did finally die, the tank was clean. I don't, know. It was just my experience.
The way to keep older in tank fuel pumps alive is never let the fuel get low….pump heats up when it isn’t submerged and then you dump cold gas on it fails.
Good old Chinesium parts again I wish more people watched your channel (& others ) who warn about these parts as Eric. O at SMA also quotes new is not necessarily good. Cheers Ivan.
This is why if you are going to replace the fuel pump at least get an oem one to put into the actual tank cartridge unit. I just scoured Ebay for three NipponDenso pumps Made in Japan to fit into my oem pump tank assy and a used one I bought to swap in plus have a spare. Price was in the $70:00 range for each pump motor versus $400:00 plus each for the whole OEM unit.
These trucks remind me of the good days. Today's vehicles have become so needlessly complex. I miss my old 1995 C/K 1500! I am desperately trying to find an older truck in decent condition so I can get rid of my current truck!
You have had two very relateable cases recently. I have a Highlander identical to the one you diagnosed (trouble free) and I have a 2000 GMC 3500 with the 5.7. The GMC does have a problem that I need to diagnose (fuel pressure is good though) but the vehicle has long crank wihen hot (add throttle to start immediately) and is low on power but runs smoothly. Thought I might get some insight into my problem but this one did not match my problem. Fortunatelly mine is a west coast truck and lifting the bed is almost painless as I have replaced a couple of fuel pumps. Even the OEM pumps are garbage and GM put life time warranties on the replacements as compensation for the crappy originals.
Replacement fuel pump assemblies can often have a poor float rheostat calibration, causing fuel gauge to be off calibration (inaccurate reading). When possible (if the fuel gauge is working fine), I’ll get an OEM pump (Delco, Denso, etc) just the pump itself, and swap it out, and re-install the original assy (if not all rusted out) .. and yes, the chinesium pumps are junk.
I see this often, were people gets cheap Amazon or eBay pumps and other aftermarket products, I’ve learned the hard way I get oem parts fuel pumps, sensors etc..when I can , if can’t I always go Napa Echlin brand on everything I can’t get Oem
12:28. What should the volt meter have read? You said "12volts will need a new pump" it was almost 14 volts, but shouldn't that be normal operating voltage? Maybe every car is different, this one did have control voltage from the relay grounded there but I don't know what it should have read on the meter.
I had to special order a Bosch OE pump for my 97 as the other brands all had problems and I don't buy on price it's just Bosch was OE but it did take a week to get.
Ive also seen alot of exhaust systems that alter the back pressures ! Most owners get it wrong and the exhaust gasses do not scavenge the waste gasses completely which will cause poor performance and fuel economy !
You would think that some bright engineer at GM would say " Hey, why dont we put a removable panel right above the fuel pump" Bean Counter: HELL NO, THAT WOULD COST $5.00 MORE PER TRUCK!
I would recommend Quantum Pumps HFP-367 QFS as min but the best pump which is tab bit more is a HFP-343 QFS over any other, P.S. the Delphi pumps are also made in China too.
So many people want to buy an ebay pump, thinking they are getting a name brand pump for less than 50% of usual cost. YOU"RE getting a china clone. A lot of people also don't realize that if you order a Walbro pump, it will now come in marked as T I Automotive. These are the people that have actually been making the Walbro pumps for DECADES.
Wow, if this 07 truck is a classic then that makes the 03 Grand Marquis I drive daily a classic as well! In fact pretty much every vehicle I own must be a classic 😂!
What kept you Ivan? 1997 Silverado, right up my alley. Unlike the Acadia I have in the shop. It needs a throttle body. Damnedest thing. I was scanning it yesterday and looking at data, I noticed I could rev the car fine, without my foot on the brake. If I put my foot on the brake, whether in park, neutral, or in gear, I get absolutely no throttle response. Take my foot off the brake and throttle works normally. o.0 APP seems to be doing it's thing, but the TPS doesn't respond at all. Crazy.. Unless I take my foot off the brake. Maybe that's normal, but I've never run across this particular scenario before.
@@PineHollowAutoDiagnostics Thanks. I'll store that info for the future. Never actually paid any attention to it I recon. No power braking huh? Bad A/C high pressure switch was killing the 5v reference circuit to the TB. ;) Runs like a scalded cat again.
AC Delco or Delphi when it comes to electronics on those trucks. Aftermarket stuff will not last especially for the cap and rotor of those Vortec engines
He changed the pump and the filter. Regardless of the amp tests I'll almost guarantee you this was a plugged fuel filter. My 89 will show a need for a filter swap like clock work when it stumbles on acceleration.
@@travissheehan6082 the issue is that the "new" fuel pump that was installed, even though Ivan's amperage draws showed low, my "guess" and that is just a "guess" not a diagnosis (only for the fact that I owned and ran one of these exact trucks, factory ordered, for 300K miles), is that a plugged fuel filter will dead flat cause the condition presented. It was like clockwork. Without a doubt swapping the pump for a better quality pump is not a bad idea but my "guess" is a fuel filter swap and the truck would have run down the road like a champ.
Fact of the matter is America keeps buying the junk. All because, America wants the cheapest pump. I've seen that so many times. Ya got anything cheaper..yup...
With the pump having a good higher current switch-on spike, but running faster and taking lower current that the one at high pressure - could it have partly blown off a pipe in the tank, or one have cracked, so it's running with a free flowing leak? That could fit the symptoms you are seeing? (posted just before you give any customer updates).
I just can't get past the logic of trying to save a couple of bucks now for inferior parts that they know won't last. Only to have to pay again and again when they keep on failing. Verses paying the price for higher quality now and have peace of mind knowing it will outlast the warrantee.
I find these 90's GM trucks to be the best Trucks GM ever made. They have classic clean looks compared to the new trucks which are so overdone as to be butt ugly. There was no start-stop, no DoD, no modules controlling everything from the grill to the tailgate and no turbo charged four cylinder engines. Can't understand why the automakers feel it necessary to add more and more useless chit on the new models. I guess it comes down to marketing to the "it's shiny" crowd.
Their seems to be no quality control in China you would think that the product would at least be tested prior to leaving the factory , or was this a defective part sold on to a third party relabeled and sold on to consumers which also happens in China .
The high cost of low price is quickly realized when it quickly becomes a higher price in the end. Wise words spoken by my late father, a master mechanic for more than 50 years. Good job Ivan!
The cost of low quality is soon reminded after the thrill of “saving” is soon forgotten.
I see this at least 10 times a year. Guys come in and they’re angry when I tell them it’s a fuel pump, then they argue that they just replaced it. Around here you can get the Air-Tex pump for $30 less and it comes with the lifetime warranty, so most people choose that. They don’t think about the fact that changing a fuel pump every three months sucks.
Air tex and others POS junk .
I refuse to install.
Delphi,AC Delco ,Bosch, ND,Carter ok .
Filter on bottom usually full of grit wipes out many .
I suck tank dry wipe it out when possible.
Just did a 1989 GMC 2500. Had tons of debris in tank filter was black clogged.
Same here except, when they bring the pump in. It's got sand in the filter.
Can't tell them, clean out your tank.
😂😂
@@stevenlatham4397 😆👌
@2nickles647 lol
Says on warranty paperwork one must " clean fuel tank and use filter screen".
Few do that .
So the life of that pump is around 90 days? Holy Moly!
Chinesiem? I am really starting to hate those people.
I was glad to see that you checked powers & grounds before finalizing the diagnosis. Very professional! Thanks for the video!
Ivan had a few lessons on that subject over time
I had a customer bring me his truck. He kept throwing parts at the engine miss.
Found he bought the cheapest distributor cap, burned a hole between two of the closest wires towers. You could barely see it.
I got him the best ones i could get, much better than cheaper.
The truck is still running good, no more misfire
Cool regulator test. I'll add that to my testing methods. I recently did a '97 Suburban and went through 4 pumps to get a good one from the A-Z store.
Just did one yesterday.
Cut a access hole in bed with cover .
Takes 15 minutes to change now .
Delphi lasted 150,000+ miles .
I have 380,000 on mine .
My 3rd pump .
Old Chevy trick tip.
If truck won't start bang on bottom of tank hard with hammer and fuel pump usually comes on again to get home .
Did this many times .
Took THREE fuel pumps from ebay to keep my 1999 F150 running over a couple weeks. First failure they sent a replacement assembly while waiting I bought another. it also failed within a week, got a replacement for it the pump only. It was the joke of the neighborhood as we removed the bed once more, then again Anyway, it's been a year or two now and so far pump number 3 is still working and I have a spare in a box on a shelf for when it quits. Like others I've had good and bad experiences with cheap after market parts. Funny thing is I don't need the money I saved now day;s, hell, I can write a check for a new pickup but there was time I had to live poor and I still live that way today.
My 95 F150 still has it's original pumps. Love the fact that they put 2 tanks in
these trucks. If one finally bites the dust, simply switch to the other. No chinesium for me! Motorcraft is the only way to go
@@Mark-x8s6u Fords are not as hard on fuel pumps as G.M !!!
I love the owner's feedback!!
Very cool! I always check fuel pressure. When I bought my car (used) I was getting misfires and lean conditions. Someone changed the fuel pump but only replace the pump not the assembly. They didn't properly connect the pump to the fuel line in the tank and I was losing pressure in the tank. My neighbor replaced the pump assembly and filter for me and my car ran like new!! Went from 12psi to 55psi.
Great job, Ivan! Clever way to check the spider regulator - left no doubts! It's a shame that there isn't a proper access to the fuel pump - a simple job becomes a major work.
I do love seeing these old trucks cared for.
Love when a plan comes together
Great convergence to the cause and elimination of alternate system concerns.
There's an open short red wire and connector by the under hood fuse box that goes to the pump, we tested fuel pump current draw at this wire at dealerships.
Ivan, nice to see these old trucks back on the road since I'm driving a 97 Dodge. Thanks for Sharing! 🙃🙂
Love those classic Chevrolet trucks. Your customers have some beautiful vehicles I use to drive. Owner of 34 classic vehicles that were near Bulletproof. Not todays Junk. Great video.again.
This was a walk in the park compared to most of your job's. I never miss a video. Ivan will tackle anything. Don't ever stop doing what you do. This world needs you and there might be some mechanics that could fix things, but none explain it like you, that gives me hope that I could even do some things that I might try if i could see and I wasn't to old now for the most part, but I do still try
I have a 97 k1500 350cid. Had to replace the fuel pump many years ago. OEM only! The drive train is still perfect, but the frame is shot. Fired it up over a year ago just to move it while working on the driveway. It still runs perfectly. Let it warm up to op temp and NO money light on. Wish the frame was still good. I'd be driving it every day if it was. I watch all your videos regardless of what you're working on. Never to old to learn.😊
@@annewilliamson2429 I just plated a rusted frame welded 1/4 -+ steel all over long overlaps .
If it's not to bad a good welder using 6011 1/8 rods can repair it.
Unless it's up front by suspension steering.
To risky dangerous.
I spray frames with fluid film drain oil evey year in road salt water areas.
We have road salt and ocean salt on beach on long island new York.
Why not look for a good used frame to swap over.
I don't really buy the whole "OEM" only. I put a oil level sensor in a BMW recently, made by Hella, a brand which makes a ton of OE parts for Euro cars. The BWM logoi and BMW part number were milled off it. It's the same part, at 30% of OE price. I put a water pump on a Chevy Cobalt the other day. I bought the Melling pump; it had two milling spots on it, which conveniently line up to the GM logo and P/N from the OE part, but also 50% of the price. *shrug*. I'd rather buy a good part from a reputable brand than pay the OE markup. It's not like GM or ACDelco actually make any of these parts themselves - ACDelco spark plugs are made by Autolite and NGK, for example. Why pay the middle man markup? Just buy direct!
I did look for a used frame and found nothing any better. It does have one patch about 3 foot long that a buddy of mine made for it about 8 years ago. No one in this area knew anything about fluid film back then. Now the frame is too far gone. Trust me, I know. I would rather sell the truck to someone that could make use of the drive train for their own project. I'm too old now to fool with it.
@annewilliamson2429 oh ok Maybe a good kid can fix her up again
Great case study, Ivan. And another great example of what cheap parts will get you. Keep up the great work.
Like the guy from SMA says just because its new does not mean is good Mr o from sma is a good guy I love to watch him work I also watch all your videos love what you guys do
Another good diagnosis man. Always appreciate your testing methods!
nice one Ivan and thank you owner for closure as normal ivan 100% correct to change the right part worth his fee
Yes Ivan love your follow up's No one else does that !
Brave man, giving yourself a haircut. I vaguely remember having hair.
I get a haircut cut every 3 months.
I'm 70 now. 😊
@@flyingjeff1984 Been doing my own for over 30 years, just a 10 minute routine maintenance procedure every few months. 😅
Nice diag. I'm partial to these kinds of videos since I own a 98 Chevy truck with a 5.7L and my fiancé owns a 97 GMC with a 5.7L. I hate to say it, but the Delphi pumps are not that great these days. We put one in the 97 and it only lasted 11,000 miles and about a year and a half. We changed the fuel filter at the same time. This truck also only has 75,000 original miles. We installed another Delphi since the first one had a lifetime warranty and we could not find an OEM pump for it. I'm in a lot of groups for these trucks and a lot of people who have used the Delphi pumps had pump failures pretty early like we did.
Here is a tip for the ground for these pumps. The ground for the pump is on the frame near the pump. The original ground straps up front on the passenger side inside the engine compartment that go from the frame to the body and the frame to the engine are very small and thin braided ground straps. These tend to corrode and break pretty easily. The replacement upgraded ground straps are way bigger and thicker. I have installed these bigger and thicker ground straps on both trucks mentioned as well as my 98 Chevy truck with the 7.4L.
That test with the regulator and bicycle pump was genius
I'm going to carry a bike pump on board for mobile diagnostics from now on :)
Super nice truck, especially for the north.... It hasn't lived up here too long or wasn't driven in the winter much.
The fuel pump probably had leakage between the impeller and pump housing, since it was spinning faster than the known good pump and had less amperage, so the load on the pump was lower than normal. This is opposite to a restricted fuel filter, where the pump will tend to draw more amps and spin slower.
Classic Chinese junk pump!
I have a fuel pressure/volume tester. I've seen fuel pumps come up in pressure but be low in volume. Didn't have a scope back then.
Power and ground were both good, but that volume reading indicated a bad pump. You could also squeeze the hose from the tester to the rail to further test the pump. Great tool.
Great diagnose Ivan.
Hi Ivan,
Another fine diagnosis pinpointing the exact cause of the problem. I like how the customer removed the bed of the pickup to gain access to the fuel pump. Wonder if the previous owner bought a Chinesium pump.🙂 I live just west of Philly so you know the outside temps we are experiencing.. I'm babysitting a cranky boiler for our heat. A 6 year old Honeywell Aquastat is failing and not regulating the low and high temperatures settings in the boiler. The original Honeywell Aquastat failed in the same way but lasted 55 years. Have to check on the boiler every hour to maintain some heat until the new part arrives tomorrow or Thursday. You and Amanda stay safe and warm.
I remember the good old days when the fuel pump ran off a cam lobe. You could buy a cheap 10 to 15 dollar electric fuel pump and plum it in if you wanted to. Just wire it to ignition on in start and run position and away you go. Plumb in a tee with a valve and have easy access to gas for your lawnmower not the safest but as long as you know what you are doing it works fine.
Unfortunately you also had to deal with with the limitations of a carburettor.
@@ferrumignis I would prefer a carb rather then all that electronic crap .
@@oldbiker9739Carb vs this shitty spider system? Yes!
Carb vs common MPFI with return lines? hell naw.
@@ferrumignisIf the thing has the most suitable carburettor on it, it will be fine. It's maxed out performance set ups that give trouble. Or whatever they did to the Lotii !
That's how the typical aircraft piston engine works. Engine-driven fuel pump as the primary and gravity (high wing) or electric fuel pump (low wing) as a backup for takeoff, landing, and when switching fuel tanks.
We need to keep these older vehicles on the road
I helped a friend replace the fuel pump in his old Chevy once. In his case, the pump was delivering nothing. It turned out that a hose connecting the pump itself to the upper half had been eaten up by the gas. Imagine a connecting hose in the gas tank, that can't take being bathed in gasoline. It wouldn't surprise me if this pump were starting to leak at that point. Would explain why the pump isn't working that hard.
Nice looking chevy!
That was a good diag and test you did with the bicycle pump, I could probably use a cylinder leak down tester as well.
Another great diagnostic video!
Fun fact Ivan…..Cash for Clunker’s program had more Chevy K1500’s bought and destroyed than any other car. For that reason 1000’s of these were destroyed/crushed which is why they suddenly became “rare”.
Yes we lost a lot of good junker parts thanks to OBiden !!
Alot of those original parts from junkers are way better than you can buy after market !
My son had a 94 s 10 he needed a new fuel pump the one they put in was a 40 pound pump barley worked I looked up the gm part number and he really needed a 65 pound pump ,its still running to this day with the oem part by Delco .
That was interesting. When you said it was running faster, I was suspecting restricted intake. I wouldn't expect a pump to be drawing less current, no significant voltage drop in the wiring, and still have an even amp pattern. Ah, cheap parts.
It still amazes me as a mechanic with 40 years of experience how much money people are willing to throw at a vehicle in parts instead of paying for diagnostics. Paying the diagnostic fee and fixing the problem is usually much cheaper in the long run.
Great follow up! As he stated ... you da man!
I'm surprised it even ran with that low of fuel pressure.
Yup only because it had a newer style spider. The original ones wouldn't open the poppet valves under 55 psi 😄
Good fix Ivan. Definitely the man. And looks like you've "been there got the t-shirt" on those GM spider injection systems. I think the intake gasket R&R was one of my favorite money makers in the day.
0:24 lovely 2 tone!
I would check the pressure at the fuel filter pressure side.
I’ve seen the rubber hose that connects the fuel pump to the metal line inside the tank ruptured and caused similar issues. Pump was just replaced with a new hose
That hose needs to be rated for submersion. Can’t put any hunk of hose in there
@@mph5896 it came with the fuel pump
Awesome work Ivan!!!!
I had a 98. for some reason about once a year she would get sluggish. Shift down for a hill rev up but would not accelerate. Every time it was the frame mounted fuel filter dirty. Replace and ran fine. I bought fuel at a reputable station and when the fuel pump did finally die, the tank was clean. I don't, know. It was just my experience.
Well put another W in the win column for Ivan! Go Figure, a bad China fuel pump! Worth every penny for Ivan's Diagnoses!
Loving your new look ivan😊
Thanks for the video.
Nice video Ivan.
i ran into this problem once and my service manager ordered my a fuel pump for a carberated truck instead of a fuel injected one
Old Chevys are good trucks easy to check fuel pressure hard to change pump till you cut the bed.
The way to keep older in tank fuel pumps alive is never let the fuel get low….pump heats up when it isn’t submerged and then you dump cold gas on it fails.
Good old Chinesium parts again I wish more people watched your channel (& others ) who warn about these parts as Eric. O at SMA also quotes new is not necessarily good. Cheers Ivan.
This is why if you are going to replace the fuel pump at least get an oem one to put into the actual tank cartridge unit. I just scoured Ebay for three NipponDenso pumps Made in Japan to fit into my oem pump tank assy and a used one I bought to swap in plus have a spare. Price was in the $70:00 range for each pump motor versus $400:00 plus each for the whole OEM unit.
These trucks remind me of the good days. Today's vehicles have become so needlessly complex. I miss my old 1995 C/K 1500! I am desperately trying to find an older truck in decent condition so I can get rid of my current truck!
You and alot of smart people !!
You have had two very relateable cases recently. I have a Highlander identical to the one you diagnosed (trouble free) and I have a 2000 GMC 3500 with the 5.7. The GMC does have a problem that I need to diagnose (fuel pressure is good though) but the vehicle has long crank wihen hot (add throttle to start immediately) and is low on power but runs smoothly. Thought I might get some insight into my problem but this one did not match my problem. Fortunatelly mine is a west coast truck and lifting the bed is almost painless as I have replaced a couple of fuel pumps. Even the OEM pumps are garbage and GM put life time warranties on the replacements as compensation for the crappy originals.
I have a condensing furnace, Amanda 30 yrs old, they try to tell you they are good 10to 20 yrs !
Leaky spider 😉
Replacement fuel pump assemblies can often have a poor float rheostat calibration, causing fuel gauge to be off calibration (inaccurate reading). When possible (if the fuel gauge is working fine), I’ll get an OEM pump (Delco, Denso, etc) just the pump itself, and swap it out, and re-install the original assy (if not all rusted out) .. and yes, the chinesium pumps are junk.
I've changed many fuel pumps that were taken out by a restricted fuel filter.
I see this often, were people gets cheap Amazon or eBay pumps and other aftermarket products, I’ve learned the hard way I get oem parts fuel pumps, sensors etc..when I can , if can’t I always go Napa Echlin brand on everything I can’t get Oem
A lot of aftermarket parts are such junk I wonder how its legal to sell them. ALWAYS order by parts number and OEM.
Another great diag.
Great diag from the man
Did you check for a clogged fuel filter?
12:28. What should the volt meter have read? You said "12volts will need a new pump" it was almost 14 volts, but shouldn't that be normal operating voltage? Maybe every car is different, this one did have control voltage from the relay grounded there but I don't know what it should have read on the meter.
He's simply saying that if the wire shows 12-14.4 volts it means the wiring is intact and that it's not a wiring issue.
@melissathompson7229 thank you, I didn't catch that earlier
Good Job!
I had to special order a Bosch OE pump for my 97 as the other brands all had problems and I don't buy on price it's just Bosch was OE but it did take a week to get.
Each of your videos is a true work of art that brings joy and inspiration. Thank you for your work!🌃😉🏖
I had that exact truck, 90 red&white 2500 with 454
Truck beds should have an access door so u can replace pump without removing bed.
Super early place your bets guess based owning one of these factory ordered. Fuel filter
Next project for the owner,,, find what that damn whine is..
That would drive me crazy...
Ive also seen alot of exhaust systems that alter the back pressures ! Most owners get it wrong and the exhaust gasses do not scavenge the waste gasses completely which will cause poor performance and fuel economy !
I'm sure you have all of the scientific data to back up your words.
You would think that some bright engineer at GM would say " Hey, why dont we put a removable panel right above the fuel pump" Bean Counter: HELL NO, THAT WOULD COST $5.00 MORE PER TRUCK!
I would recommend Quantum Pumps HFP-367 QFS as min but the best pump which is tab bit more is a HFP-343 QFS over any other, P.S. the Delphi pumps are also made in China too.
My local shop that I used 20 years ago would only use AcDelco parts. I found out why when I installed an aftermarket cap about 15 years ago.
Ac delco parts are aftermarket, but decent.
@mph5896 I'm sure its a semantics mess, but most AC delco parts I have bought come with a GM authentication tag.
From the look of that waveform, something wasn't sealing in that assembly 🤔 internal fuel leak.
So many people want to buy an ebay pump, thinking they are getting a name brand pump for less than 50% of usual cost. YOU"RE getting a china clone. A lot of people also don't realize that if you order a Walbro pump, it will now come in marked as T I Automotive. These are the people that have actually been making the Walbro pumps for DECADES.
Ivan. I love your diags. Yes, you ARE DA MAN. :-) sign me "faithful 85 year old follower. Adios.
Wow, if this 07 truck is a classic then that makes the 03 Grand Marquis I drive daily a classic as well! In fact pretty much every vehicle I own must be a classic 😂!
Think it's a '97
@ oops my bad! Soooo does that mean my 02 Grand Marquis isn’t a classic? My whole day is wrecked now!
The number of times I have to explain to people that new does NOT guarantee fault free. Sometimes it just means 'not yet rusted in place'.
The old Toyota service manuals said “substitute with a known-good part.”
What kept you Ivan? 1997 Silverado, right up my alley. Unlike the Acadia I have in the shop. It needs a throttle body. Damnedest thing. I was scanning it yesterday and looking at data, I noticed I could rev the car fine, without my foot on the brake. If I put my foot on the brake, whether in park, neutral, or in gear, I get absolutely no throttle response. Take my foot off the brake and throttle works normally. o.0 APP seems to be doing it's thing, but the TPS doesn't respond at all. Crazy.. Unless I take my foot off the brake. Maybe that's normal, but I've never run across this particular scenario before.
@@farmermiyagi1338 it's a safety feature 😄
@@PineHollowAutoDiagnosticsGM's anti burnout feature I heard 😅
@@PineHollowAutoDiagnostics Thanks. I'll store that info for the future. Never actually paid any attention to it I recon. No power braking huh? Bad A/C high pressure switch was killing the 5v reference circuit to the TB. ;) Runs like a scalded cat again.
That frame looks as rusty as the Titanic!!! What crap !!!!!😅😅😅😅😅😅😅
The Delphi pump for these trucks is over $200. Guess who has an "OEM" replacement for 49.99
AC Delco or Delphi when it comes to electronics on those trucks. Aftermarket stuff will not last especially for the cap and rotor of those Vortec engines
He changed the pump and the filter. Regardless of the amp tests I'll almost guarantee you this was a plugged fuel filter. My 89 will show a need for a filter swap like clock work when it stumbles on acceleration.
That would make the current draw more wouldn’t it? Not less
@@travissheehan6082 the issue is that the "new" fuel pump that was installed, even though Ivan's amperage draws showed low, my "guess" and that is just a "guess" not a diagnosis (only for the fact that I owned and ran one of these exact trucks, factory ordered, for 300K miles), is that a plugged fuel filter will dead flat cause the condition presented. It was like clockwork.
Without a doubt swapping the pump for a better quality pump is not a bad idea but my "guess" is a fuel filter swap and the truck would have run down the road like a champ.
Well, well, well .... un-Chinese a classic Chevy truck made it run correctly. Sometimes the vehicle is smarter than the owner! Imagine that!
Great job. Cheap Chinese built auto parts is putting a hurting on us. Especially sensors 😮 HELP!😊
Fact of the matter is America keeps buying the junk.
All because, America wants the cheapest pump. I've seen that so many times.
Ya got anything cheaper..yup...
On them faulty dist cap or fuel pump
With the pump having a good higher current switch-on spike, but running faster and taking lower current that the one at high pressure - could it have partly blown off a pipe in the tank, or one have cracked, so it's running with a free flowing leak? That could fit the symptoms you are seeing? (posted just before you give any customer updates).
3:39..
3/4 tank of gas
Scooby says: uh oh.....
Seriouse question, why do you never wear a seat belt?
Mostly to trigger viewers 😂
@PineHollowAutoDiagnostics Hope you stay safe on the road.
What is the cheapest scan tool with timing correct control for these vortec 350’s?
Thanks
Ivan looking extra russian today lmao
I just can't get past the logic of trying to save a couple of bucks now for inferior parts that they know won't last. Only to have to pay again and again when they keep on failing. Verses paying the price for higher quality now and have peace of mind knowing it will outlast the warrantee.
I find these 90's GM trucks to be the best Trucks GM ever made. They have classic clean looks compared to the new trucks which are so overdone as to be butt ugly. There was no start-stop, no DoD, no modules controlling everything from the grill to the tailgate and no turbo charged four cylinder engines. Can't understand why the automakers feel it necessary to add more and more useless chit on the new models. I guess it comes down to marketing to the "it's shiny" crowd.
You Da’Man
I think there are 5 grounded points on that truck
You Da Man
Their seems to be no quality control in China you would think that the product would at least be tested prior to leaving the factory , or was this a defective part
sold on to a third party relabeled and sold on to consumers which also happens in China .