Honda Pilot - Intermittent A/C
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- Опубликовано: 2 окт 2024
- Come along in this video as I diagnose and repair this 2009 Honda Pilot that has an intermittent problem with the A/C compressor clutch . It doesn't want to engage so lets find out what the heck is happening.
More about relays: • VEHICLE RELAYS - Opera...
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
Great video ! I really like the way you diagnose things to make sure what the problem is. That is the difference between a real technician and a parts changer.
Recently stumbled on to your channel and I have to compliment you on your approach and delivery! You always seem to be willing to go the extra mile to help your customers even though you would make more money by throwing parts you will readily explore safe, competent fixes from other angles. I am referring to the viscous coupler video in which you could have changed the $1400 part added on your labor costs and sent them down the road. Instead you performed an completely satisfactory repair and at the same time saving your customer hundreds of dollars. Another example was the Ford with the bad PCM that you repaired with a used PCM and then, other than the charge for the Dealership to flash the unit, your labor and the cost of the used part were what fixed that vehicle.
I don't necessarily advocate used part repairs but sometimes they are worth considering as viable options. I bet you have a very loyal customer base. Honest technicians such as yourself are rare these days.
I, myself earn my living as a Heavy Jet Aircraft Maintenance Type which is a very time sensitive, high pressure environment with regards to maintaining airworthiness using the ability to diagnose problems quickly, correctly and then make the necessary repairs in a minimum of time to get the aircraft back in the air where it belongs. But when it comes to my vehicles I sometimes need help and that is how I found your channel. "One - Two - Barbecue!"
Please continue to create and release your content it is valuable to many of us! THANKS!
Happy Dead Bird Day! (Thanksgiving)
Found your channel not long ago, informative and fun to watch! You have a very apparent talent to communicate detailed repairs along with a sense of humour. Keep it up, it's very refreshing😀.
+G Watson Thanks G
Jorge Rodriguez. Power train Control Module
G watsok cuuute face typed!!!
Step aside,the doctor's in the house! Proper diagnostic,proper mindset,proper tools,proper outcome and a proper video.:)) Thanks Dr. O!
"Stage II weight reduction kit" at 11:00. Hilarious.
Pretty loud cricket.
A male Cricket does that after sex
Male human does it too it's called snoring
weight reduction kit :-) good one. You always make me laugh. Thanks for all your awesome video's, keep it up.
+Ingvar Dirdal Stage 2!
It is interesting that you spend that much time confirming the diagnosis. As a DIYer I would pop in a relay drive down the road, and see if it fixed ,it. It gives me and appreciation for how much more you have to go though to make sure you have the proper diagnosis when your reputation is on the line. As DIYers we can get by with a little parts swapping now and then.
Great job as usual, Eric. I hate intermittent problems. I could stare at the compressor clutch for 2 hours and it would work perfect until I turned my back and then stop. As soon as I look again it would start working. I usually play peek-a-boo all day long and then change the damn relay.
+wysetech2000 Mine would stop when I turned the camera off then start when I turned it on... go figure lol.
I bet your customers feel so justified watching this. Its a prime example of crap not working, right up until the car see's a pro, gets scared and decides to run flawless.
Great info on relays!
Keep em coming!
+Darren G. That is the truth my friend.
Just like the proverbial TV repair man, it always works great when he's looking at it❗
Good diagnosis Eric! I agree never trow a part till you are a 100% confident!
Tuned in for the Honda a/c diag, stayed just for the "shackles on a rotted-out Ranger" comedic interlude. Classic stuff. :D
Great work! You're a very thorough mechanic. I'm glad there are still a few of us left
+PWRSTR0KER2008 thanks
Another great video, I have learned so much from your videos. I have had my autel scanner for about 4 years and I really like it. It is a pretty basic model but does have some live data and has help me trouble shoot a lot of problems. Keep the videos coming, Thanks Gary
Great Video Eric, Nice to be able to see the root cause of the problem when the relay was split open. That Ranger would have been an MOT failure over here with the amount of corrosion on the chassis. Some 0 -60 times before and after the stage 2 mod would have been fun :-)
+richard pearce HA No way! Brake lines looked like the frame!
$2200@
For that scanner ??
Probably not something you should buy through snap-on.
It’s not just cars: broadcast equipment is similarly fickle, and magically behaves itself when someone calls me to check on it. As we like to say, “it’s only intermittent part of the time.”
When you’re dealing with a relay, a voltmeter is handier than just a test light: a pitted contact like that will typically show a low but non-zero voltage on the load side, and tapping on it will often make the voltage jump around a bit. And even when the compressor does kick in, you probably won’t see the full voltage it should be getting. That will also get the relay warmer than it would normally run.
That pickup is about ready for the crusher! Great video.
+N Smith 5 years ago lol
Check the voltage drop across the relay contacts when working anything close to 300mv bad relay compare the voltage drop to a good relay as the contact resistance heats up failure time voltage drop goes up relay has complete failure relay cools back down it works the ultimate intermittent checking voltage drop at the
a/c clutch when working check voltage drop or substitute a load at the clutch connector to see if there is voltage drop across in the circuit
Watched WUW and a viewer asked if you or your employee was ase certified, reminded me of my sawmill days here in Oregon and this millwright that worked there had a 6th grade education. Sharpest man I have ever known when it came to anything mechanical or everyday life, I sure miss his wisdom.
I've been watching your channel since you started but this is my first comment .As a mechanic myself I appreciate watching quality honest work. Working at the Honda dealer we saw this problem often. Also common cause for parasitic draw. Great job great videos, keep em' coming!!
+Aaron Randles Cool! I have seen them come in like you say and they are stuck on. pretty obvious when you go to jump start it and first thing you hear is the clutch slam closed! Seen that a time or 2 myself :)
Thanks for the class Professor O. Always a learning experience.
Ever since watching SMA videos, every time I see 'Honda' it gets converted to 'Hondoo' in my head (usually raising a chuckle at the same time)
Oh, and that brake cleaner has become almost as versatile as WD-40.
This man just saved me $800 because some Honda technician told me I had to replace my entire compressor system
Thank you for a wonderful video. My Tundra A/C clutch seized for three yrs and I was too cheap to replace it but until now after watching your video I put a long screwdriver to the clutch and smacked it 3x and it came loose and now it works. Makes a little noise but who cares. I got ac again!!!! Heck yeah. Nice video!
On our '99 Accord, the clutch seems to be activating, but it's not spinning. However as soon as I turn the AC on, the belt starts skipping and making smoke, so I think the compressor itself is seized. :-\
+anti0918 Sounds like it is compressor time
+South Main Auto Repair sounds like its time for the 2/65 air conditioning........;-)
Where is the brakecleena? :-)
Good closeup of relay contacts.
+Tom OConnor Thanks
Nice vid Eric on the diagnostics. One thing that you can do with relays is to check the voltage drop across the relay contact with a DVOM. When the relay is energized with the clutch running, you'll probably see a high voltage drop across the relay contact. And of course as you know, the closer to 0V, the better the contact. Looking back at the wiring diagram, it was a little surprising not to see a diode across the clutch winding. Without that component, the high voltage kick when the clutch turns off would jump across the relay contact which would eventually weld them shut. A diode across the clutch winding or a snubber across the relay contact would make the relay last for a long time. And looking at the inside of the relay, there was a resistor, which looked like 1100 Ohms to suppress the kick from the coil when it turns off, yet it wasn't shown on the diagram. Who knows, maybe there is a diode across the clutch winding...
+stuzman52 Could we put a scope on it and see what kind of noise it has when it kicks off?
+South Main Auto Repair Sure thing Eric...Just be sure to crank your voltage level up high until you know what the voltage spike will be. If there isn't any suppression across the clutch winding, it could be a couple hundred volts.
Holy smokes! That car comes in for normal oil changes. When I see it again I will check that and report back.
Thanks Eric as that test might be an interesting find...
Similar issue happened with my wife's 09 Acura MDX. Relay's resistor fell off it's perch inside the relay. No A/C. I took it apart and found this as I could hear something rattiling inside. Honda updated the part number and is using a Mitsuba relay now instead of the Omron that was in it originally. Has been fine since, but the updated part cost about 3-4 times the original.
+Sam G Oh cool thanks for sharing that
...tearing apart broken parts - I do it all the time....
Awesome repair! Simple repair! But where you earn your money is in the diagnosis.
Intermittent problems are the worst aren't they? They can and do drive you absolutely nuts sometimes.
Thanks for the video and your honesty, it speaks a lot about you...
Sir please make a video on how to service a/c system using manifold gauge from recovering freon,vacuum,inject oil and recharge a/c system.....thanks a lot sir I have learned a lot from your youtube channel
Probably not worth doodling around testing AC relay too long if a $15 part. Since shop rate burns that every 12 min. Esp if Honda known for problems with the relay. If wrong discount the bill later.
Hey Eric good job. What is the part number for the relay tester set you use? I see a couple of different ones out there. I want to purchase a set. Also looking forward to hearing more about the Autel. I cant afford or justify purchasing the Verus. I currently use Autoenginuity which has served me well but looking to upgrade to a all in one package with the scope feature. The Autel is more in my price range. Thanks for the video.
+Gary Habat I will have to look at work the relay tester is made by Lisle I think. I have 2 different ones though. 4 in each box. Future updates on the Autel will be posted in videos I am sure as I use it more.
Your videos are fantastic. I've enjoyed everyone so far. Thanks for doing them, even though you're costing me tool money!
+Toyota Tech Hey ya can't take it with ya!
+South Main Auto Repair
Very true! That said, my tools won't come with me either! On a serious note, I've had some great tool tips from you and I'm pleased with every purchase, my wife has a different view!
+Toyota Tech it is easier to ask forgiveness than it is permission ya know... my wife has just gotten use to it lol
I just want to thank you so much. I hate going to the dealer to get ripped off, so your video saved me a whole lot of money and taught me a good lesson about relays on my ac which had the same condition you show here. Thanks again and I will keep watching your videos. Good mechanics are all over the place but great mechanics that care about their customers are 1 in a million. Thanks, your one of the great ones for helping us out. Take care and good health.
I liked the post-mortem, reminded me of biology class. Wonder if copper thieves are coming after that old relay. ;-)
I have a question for you Eric. Where do you get all the service manuals and wiring diagrams for different vehicles? I only need them for two vehicles.
Does your new scan tool have a wireless connection with the car? Or am I just blind and not seeing the wire?
+Atrax R www.prodemand.com/ and yep it is Bluetooth actually to the car
South Main Auto Repair Oh man thanks, I appreciate it a lot!
Yea I thought it had a Bluetooth connection but wasn't sure. How is the response considering it's Bluetooth? Is it same as the wired connection?
yep just as good
What? No brake cleaner? Regardless, a terrific diagnosis and repair.
+ICU2 Oh snap I did forget !
Really like your attitude toward being right,and not just throwing parts at it. I'm retired now but was a consumer electronics tech and I was the same way....I still repair my own vehicles and love what I have learned from both you and Eric the car guy. Thanks for all you do
Sister has a pilot. Ill be sure to buy a relay and put it on a shelf. Bad mechanics and their shady reputations keep you working hard. Keep up the quality work!
As you've requested, I've got the 'ole GMC loaded deeply with ammo and a selection of firearms...should take me about two days to arrive. I need a spare tire mounted.
Take care, my friend. (Oh, I'm sure the New York authorities just wet their panties.)
+Stephen Malone I'll be waiting! The range is ready any time.
+South Main Auto Repair I would be afraid NY laws would not like some of my evil black rifles ;)
+N Smith NY is definitely one of the more racist states when it comes to firearms. ;)
Your honesty shines thru again Eric.
+1954BJohn Integrity cannot be bought at any price
I wish more mechanics would be like him.most of them are angry people that should not be in these business.very hard to find honest mechanics.
i just subscribed...awesome mechanic...awesome videos...glad i found this channel....
An honest business man with a kind heart...
I wish my 2008 Ram 3500 had an AC Clutch relay to check like this Honda. Of course that would be too easy. How much was that relay compared to a new TIPM I wonder? Thanks Dodge.
I think your tutorials are awesome I binged watched all last night. Peter Melbourne Australia
Really dig your t-shirt Eric :-)
Hi South Main Auto Have you ever encounter a 2007-2011 CRV that makes this noise when you are stopped and turn the wheel
slighty when it has been driven for 20 minutes or more. You can hear it
when pulling in driveway.
ruclips.net/video/YiUUofweITc/видео.html
Eric: "...and right now it's broke again.."
Honda: "oh yea? Broke again? I'll show you 'broke again', You Liar!" *Click*
Eric: "and it just kicked on..."
Never fails, eh Eric? I shall call this car "The Temperamental Honda". I work in IT myself, but it gets me every time too. Computer misbehaves until the tech gets in and then it works normally. Gotta love it!
+Pete Gaytan III EXACTLY! Oh your car is dead along side the road, take it for a ride on a roll back and when you get to the shop it will start right up... 80% of the time lol
I am very disappointed that there was no brake cleaner! You could have cleaned the relay with some brake cleaner just because. I am obviously joking around but all in all a great, informative and honest video. Keep them coming. I am anxious for part 2 of the Corvette and the S-10 (hopefully there is part 2 for the S-10). I have a 1998 2.2L S-10 with the 5 speed NV1500 manual transmission. 133,XXX miles and still runs strong. Not going to win any races but is a good little truck. I wish GM still made them. sigh. Anyway keep on pushing videos out. I will watch any publication you release so you are guaranteed at least 1 video view. :) Almost salt season; cant wait!
+Jon Rushing Yep they both have part II and it is coming soon!
Eric will there be a part 2 of the Corvette? Thanks Jim
+scrimmy6969 Coming soon, car is done but it isa a long vid so I am still editing...
+South Main Auto Repair Long videos make happy viewers.
South Main Auto Repair Looking forward to it. Thank you sir
+scrimmy6969 were going thru SMAR withdrawal...............LOL
I am trying! Almost done.
Eric, I think maybe you should start a little undercoating business. Make a killing.
+swav100 Any one who does that here fails because when you do that and peoples cars rot out in 5 years they come back screaming!
+South Main Auto Repair You just need to set their expectations properly from the start - and get it in writing.
You are like me. It failed, why? I don't like to buy refurbished computer, or any other electronics because the fix what is not working. They don't repair what may have caused the failure or what was damaged by the failure. Kind of like patching a tire and leaving the nail in.
Another 100% fix. Good job and good videography(?). Keep up the good work. Stage 2 weight saving? ha ha
I have a 2015 Honda pilot with intermittent ac as well. It turns out that the freon was overfilled. The shop I brought it to brought the level back to green and presto I had cold air once again! Worth a check!
great vid, cool to see the relay opened up...
your probe tester sucks. looks like it only tests for power? gotta be connecting and disconnecting to + or - battery terminals to check for ground? you need one that tests for both power and ground in one go.
for example in some cars, the low&high pressure switches will allow power to reach the compressor, while the pcm/ecu will provide the ground. I worked on a camry that wouldn't send ground to the compressor because the idle was too low and rough after a battery change so the ecu said "Nope can't stall the engine so no AC for you bro". some cars get ground simply by bolting compressor to engine
Man you took the word right out my mind.. WHY?? More rust than truck..It does pays the bills though..Your phone in the shop has the same exact tone mine does. I flinch every time I hear it thinking my phone is ringing. Not complaining.. Just noticing.. Take Care
+ItsAlwaysRusty it keeps ya on the edge of your seat lol
I've had a 2011 Odyssey with a similar intermittent A/C issue.
The compressor would stay engaged for a while and would disengage after a few minutes.
It turned out to be the electromagnetic coil for the clutch being defective from factory and overheating.
This one was real tough...it had me waste an hour double and triple checking the relay and wiring
because I couldn't believe that a then-brand-new car had problem with the compressor...
especially since Honda kept using that same engine design from over 20 years ago!!
Anyway...for some reason the customer insisted we should have it fixed instead of handling it through warranty so we replaced A/C clutch+pulley assembly for him.
+movel3 Oh wow an't say I have ever seen that?!
Well done, but why does everyone say Honda is the best when their relays suck? Sorry, I'm just having fun with the people that buy into all the Honda Hype!
Great video but you didn’t note that the compressor always run in the TXV systems but in a orface tube system the compressor cycles based on system pressures so a cycling compressor doesn’t necessarily have a problem unless it’s in a expansion valve system
I don't really need a diagnostic tool, I can watch videos and I 'll get the idea what the problem is. Thank I watch your videos and I think you are a great dude.
Excellent summary and diagnostic approach. I would have been under the car first, and would have taken longer to work my way back to the relay.
+spelunkerd I didn't wanna crawl on the ground lol so I started at the top :)
+spelunkerd Same here I would have started at the compressor clutch and would have taken me at least 5 minutes until I got to the relay. I don't have a relay test kit and I imagine most DIY'ers don't so I avoid relay testing unless absolutely necessary. I can test relays manually but not while running. Just a bit of feedback for you Eric to know the mindset of a DIYer compared to a tech. It's just a matter of not having all the tools at one's disposal.
+DJDevon3 Ahhh got ya, I have been in the shop my whole life so sometimes I loose sight of that stuff. thanks for sharing.
+spelunkerd Hey Dave! Nice to see you around again. Hope everything has been well for you.
+stuzman52 Great, too distracted to make any videos in a while. Hope to get back to it some day. Thanks, Terry.
You car guys know you got people stuck and make it take longer just to make people suffer, how many times did you go, oh my connectors lose or it did not read, let me do it again? you guys love that shit. Then you say words and sentences that you know damn right well we dont understand just so you can be big man and re explain it 4 times.
i own a pilot 2011 model. the A/C is working perfectly once I start it, but after a while, especially when i drive on highways "under 60 miles/hour speed" the A/C stops blowing cold air!
I recharged it and changed the filter, nothing changed.
Same here. I just changed the ac blower motor relay on mine. For some reason the ac act like it wants to turn off and not sure why.
Excellent work diagnosing this issue using logic and dogged determination and never giving up. Great video tutorial for those of us with similar issued . Thanks
Exactly what my 2009 Pilot just experienced
My 06 Honda Pilot is doing the same thing I swapped out the relay and I noticed that the AC clutch still not spinning what else can it be
Worn clutch check air gap
Too many possibilities to list
What is the justification on the price difference between the altel and veris? What Tampon just likes to rob you....
Glad the relay crapped out again and you are correct on the Ranger Why Bother LOL
Sir what is the common problem of a/c system no air came from vents after long drive? Suburban 2016,no dtc
I'm pretty sure a little squirt of brake parts cleaner on that relay contactor would've fixed her right up! Maybe get one more summer out of it...lol
+KC inMN OH Man I better did it out of the trash!
Great video on troubleshooting the relay. I do the poor man's quick relay test by switching one relay with another non critical identical relay in the fuse box. The video did make me wonder if my Autoenginuity scanner software will enable me to trouble shoot the electrical switches for the a/c system. Need to check that out.
+Sandbag1300 oh got ya, yeah I am liking the new autel 908 so far.
I have a 2011 Honda pilot the center to Vance do not blow cold air they don't blow any air out of vents work every other van works just the center to or not blowing it all what could be the problem
BTDT on those later model Hondas, the clutch is getting weak, and killing the relay, I have done about 30 of those compressors this summer, may work for a longer time in NY,but in GA the new relay may last a month or 2. good diag though☺I have both a maxsys mini and a modis ultra, the maxsys really shines on security, like programing keys etc.
+Michael Berg Good to know thanks for sharing. What kind of amperage draw are you seeing on the old vs new when you measure them?
I have never measured amps,:( I should but haven't, we had an ex Acura tech that was what he would do is replace the relay, and they came back I would get it and the new relay was bad, measure excessive clutch gap, the rest I have a know good relay and caught not engaging like you showed in the other video
Eric, if the fuse protecting the load side of the relay is 7.5A, one may estimate the running load current is approximately a half of the fuse rating. Correct me on the following presumption..if the compressor/clutch assembly comes with a shim from OEM then removing the shim should effectively reduce the load current on the relay as the clutch coil will not require a higher magnet-motive force to close it.
No. DC coil current is unaffected by nearby magnetic material (like steel clutch parts); the coil doesn't know how much force is required to engage the clutch - it just uses Ohm's Law (coil amps = coil voltage / coil resistance)
The coil current during the brief pull in is of little interest anyway. It's the clutch coil current that's present when the relay turns OFF that burns the relay contacts. There is no spark show when relay contacts close, but opening is a different story.
And typical auto AC clutch coil resistance is about 3 ohms at ambient temperatures, so 14/3 = 4.7 amps, and somewhat higher for larger compressors.
That arcing that happens when the relay opens can be minimized by an appropriately rated resistor and capacitor in series across the relay contacts. This arrangement is called a snubber network.
The reason the automaker doesn't do that from the factory is that they do durability testing and just the relay alone already outlasts the length of the warranty, so they don't need to do anything more.
The best place to put a snubber network is inside the relay, so if you've got relays that are only lasting 2 months, try a different (likely more expensive) brand.
Sometimes the cheap brands skip things like the snubber network in order to cut costs. Sometimes you really do get what you pay for.
He is a very good mechanic and presenter.
Do you have tech to tech by chance. Being I fix a ton of used cars I have a pretty decent collection of issues I've found over 28 years.
hi ..do you have a how to video cleaning a 2006 toyota corolla..throttle body without affecting the electronic in the gear..thank you for your kindness
+jirojoseph esman Sorry I don't have one yet
Hi Eric I look forward to your opinion on the diagnostic tools. Interested in your comments about the scope on the Autel.Tam
+Tam Couch Mehhh it is OK at best but needs a lot of software...
Nice job as always Eric. I forget to tell you it's a 2007 Chevrolet Silverado with the shift problem.
2007 chevrolet silverado 6.0 liter
Solid state my ass...
Honda a/c relays are a common problem... but why not verify freon level??
Great video man, thanks! Subscribed.
SMA technical institute featuring Dr. O. What does the "O" stand for? OMG he's good at what he does!
+ManicMechanic007 Haha no just my polish last name lol
the teal blue relays next to them are omron relays made in japan. the black ones are more compact and made in usa. these usa omron relays keep sticking on all the hondas with this layout and the j series v6
Had that same relay on a Pilot causing an intermittent battery draw of 3 amps found out after diagnosis these have some history of failure. I totally get the idea of staying on a problem until you can prove out a failure, I also subscribe to telling the customer what you suspect as well as other possibilities and let them make an informed decision or sell more diagnostic time.
Hi! what kind of camera do you use to film your videos, and love all your shows. I am a Auto Technican also.
+King Tracker A sony handi cam
nice fix eric does the autel have scope functions and if so could you do a video on that please I'm thinking of getting one if the scope works good thanks mike
+Michael Szweda Yes I bought the scope with it and showed it in the Corvette video.
Dude, I think u just saved my butt.. same exact issue on my pilot !!!
98 ford ranger 2.5 ltr po 171 stft 14 .5 an ltft 25.6 could it be a vacuum leak
+Simon flores sure
Patience is a virtue...well done Eric!
If you're willing to say, what is the time billed?
+Frank Totino 1 hour flat rate to diag and repair plus the relay.
Yup you are sure about that people bring parts nd say put em on so I do. I tried to tell this lady her pads were good for at least a year but she demanded that I put her new ones on lol
Common issue as well as Toyota wich you can use the horn relay as a tester.Great vids,nice to see someone with talent!
+montefiveforty1 Thanks :)
Help! I have a 2005 Honda pilot, compressor with not kick on ( NO COLD
AIR), belts spin around it OK! I have changed the a/c relay, all fuses,
tapped on it, it will spin with my hand, what else can I look for?
Thanks in advanced!!! :)
Help! I have a 2005 Honda pilot, compressor with not kick on ( NO COLD
AIR), belts spin around it OK! I have changed the a/c relay, all fuses,
tapped on it, it will spin with my hand, what else can I look for?
Thanks in advanced!!! :)
I have a Ridgeline. Those relays have no honor. I have to change my compresor relay every two years. Once it scare the shit out of me when the relay failed and keept the clutch on without ac. It started to throw ac has everywhere.
what model autel is this your talking about i missed it. couldnt see the actual model.