Silverado Electrical Issues - One Side Of Engine No Spark
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- Опубликовано: 5 июл 2024
- Today we take a look at the power issues the cam Silverado is having, one complete side of the engine has no spark, checked fuel injectors, coil pack harness, fuse issues.
Injector adaptor harness: www.racetronix.biz/p/injector...
Upgraded Injectors: www.rockauto.com/en/partsearc... 
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Thanks for pointing me in right direction. PROBLEM SOLVED. I had no spark on coils from bank one. I checked fuses ing a and ing b, check power bank 1 coils (black and pink at computer side of harness), plugs wires, did a compression test, switched out coils with ones I had laying around. I finally came to conclusion that it was the wiring...so I checked power bank 1 coils (black and pink at computer side of harness) and had good voltage. Then I checked the continuities the from coil connector harness back to computer and the coil harness under the mount bracket....and all was good but still no spark!!
That's when I came across this video and decide to check continuity from black ground wire at coil harness back to ground connection at passenger side front head. At first I had continuity and then slowly it started to rise on and multi meter was showing resistance....well that's all I had to see and I tee tapped a new ground wire into the black ground of the computer side of the bank 1 coil harness and ran it back to the original ground on passenger left front head!!
It fired right up with all original parts( i put original coils back on) and laid down rubber on first test drive also blowing what was left of my bank one cat converter's internals all over the neighbor's curb. My Truck is a 2007 Silverado new style 4wd with 5.3l..and its never ran better!
THANKS to ALL!
I'm glad I could help get you pointed in the right direction! and very happy to hear your truck is back on the road! thank you for going into detail on your troubleshooting, hope that can also help someone else having the same issue's as well.
I appreciate this info. I have a 8.1 swapped into a 1978 F350 dually and I have the same problem. Got exhaust on the passenger side and nothing on the drivers side. I’m definitely trying the ground trick before I replace anything
Hey did you ever figure out what was wrong with it? I have the exact same issue and same side too. I put new intake gaskets, maf, TB, spark plugs, ignition wires, knock sensors, didn't want to spend the money on coils if they're good. I unplugged the driver side at the main harness for the coil packs and the truck ran the same so I have that whole side not working for sure. Any update or help would be appreciated
Having the same issue, purchased a harness from PSI and installed no power on the driver side.
07 New Body Style 1500 Silverado. I am experiencing a low pulsing Injector wire on the #3 injector. This is causing high ltft on bank 1 and Misfires. But, my misfire code is showing p0300 random misfire. Test was done with a noid light which showed a dimly lit noid light and inconsistent pulses on #3 wire. All other wires seemed to light up nicely with a consistent pulse. I recently did a cam swap with a BTR Torque Cam in the truck as well as valve springs and hardened push rods. My two thoughts are as it was my first time doing a cam swap maybe when I pulled the cam I was off on timing OR I have a short in injector wiring harness. I did remove timing cover again and checked that dots are lined up and they are perfect BUT that does not mean when I pulled it I had it right. Anyone else have any other thoughts? I think unfortunately my only choice may be to pull cam again make sure I am at tdc and start over.
2008 Silverado 1500. 5.3 Having the same problem. South main Auto had a video about this. My Right bank 2,4,6,8 coils are not firing. Check at Harness connector at coil harness at top of engine. Pink wire -Hot Black -ground. His had no ground coming there. Back probed into that harness connector at ground and ran ground test wire with alligator clip to ground. . Ran great. He found bad ground eyelet below around power steering pump where the ground originates. Crusty ground pulled right out. He did repair all the ground wires in that eyelet and relocated the ground to a better place. That eyelet had both grounds to run both sides. Will find out tomorrow if that's my problem. Sounds reasonable. This seems to be the fastest fix ! also thanks for this video. It helps so many people like me!! Phil
I am having the same issue with my Avalanche Have you floored it while driving When I floor it I get spark Can that be a computer issue
Ground on block beside the powersteering pump possibly had one at a dealer I worked at said it was bad computer didn’t fix it ended up being that ground even though it looked good you gave it a little tug and it popped loose put a new ring terminal on it fired right up
I have the same problem but mines on passenger side any help would be great
PNW!!
Double check the ground on the back of the head. Use internal/external lock washers so it really "bites" into the block. Also make sure you have a good ground from the engine to the body.
The video you had when you pulled the engine saved me a ton of time not pulling my hood off! I would have never thought about using those extra holes for the hood springs🤘
Yeah buddy!
Thank you and good call, I'm going to take another look at that ground. makes perfect since that would be the issue but it seemed fine during the install and I need to get some of those lock washers for sure.
Love to hear it! I'm glad I could help!
Im having this issue and I don’t have any ground going to the back of the head. I checked my brothers who’s same year and model and his doesn’t have a ground going to driver head and it works perfectly fine
@@gto.eduardo958 the ground on the back of the head is just for that banks coil packs. Follow the wires and see where it's grounded at then inspect the ring terminal and wire for corrosion. Repair as needed and then retest.
@@253fabrication ohhh shit okay I think I see what you mean
@@253fabrication okay so today i took it off cleaned it up because it didn’t look bad… put it back and ran the same. I checked continuity from that wire to the coil packs and it tested good. Just wanted to mention. When I did this i forgot to disconnect the battery. And once I got it loose it touched the fuel line. And it activated my fuel pump because I did have my gauge hooked up and heard it prime. correct me if I’m wrong but I have a short to ground somewhere right ?
Try ground wire from harness to battery ground
Did you find out what it was
Same problem but passenger side
Everything is new even put extra grounds on it still no coils firing on passenger side new wiring , coils ,
I've chased this for 3 years off and on . Really sentimental to me or I'd........
I'm having the same problem with mine only mine is passenger side
Any luck with this yet? I’ve got the same thing going on. Was it a ground wire for yours?
I found mine. I had to replace the lifters originally. After reassembling everything 1 & 7 wouldn’t fire. Ended up being the lifters orientation absolutely matters for the oil hole. The tiny hole has to face the intake and not the exhaust manifold. Ripped it all back down. Rotated lifters around and now all is good 🤞
Pull your injector a fuse and look at it this happened to my 5.3 and fixed it thanks to your videos I just need to find my short now. Thank you for your help and videos
Fixed today BTW and it's labeled "injector A"
I will take another look and clean the connections for sure and Thank you! I'm glad to hear you are getting yours squared away!
Man thank you for this comment i couldn't find the issue resolved nowhere on youtube until i seen this comment and that was the exact answer that fix my issue! Thank for posting this comment your a life saver man💯
Having the exact problem
@@fabiangonzales6949mine also. 06 1500 MAX 6.0. Fuse INJ 1. Entire 1st bank had power again.
Man I been working on my 5.3 for weeks an I still can't figure this shit out..please I need help..no codes
If you figure it out bro let me know I have the same issue but all these videos are leading me to think a bad ground wire, let’s hope that’s the issue… it definitely has to be a ground or there’s a piece of the wiring that is not getting enough voltage but check for ground first as well as the pcm to see if your getting anything there
Mine's is doing this but on the passenger side Bank a some reason it run good but then when it rains it starts to flutter and miss . I've changed out the harness spark plugs spark plug wires everything and it still does it.. have you got it fixed???
Check your main ECU harness ground on the passengers side. After a lot of different trouble shooting I just double checked the harness ground on the driver's side that goes to the back of the block and gave it a wiggle then it just broke off. I'm thinking yours is either loose or corroded with the rain effecting it. This weekend I'm going to terminate a new head on the ground and hoping for the best 🤞. Trace that ground and I think you will find your issue.
@@MitchCarveth thank you very much will let you kno
I have trouble with my 96 Tahoe you have to clean the holes out in the bottom of the distributor the dust is building up causing it to Crossfire with moisture
@@shawnthompson6725 that engine does mot have a distributor the one in the video the coils and the computer = the distributor
is it no spark or no fuel on the drivers bank ? veryify that first. if its no spark , then use a volt meter and check at the coil if your gettting key on 12v on one of the pins and 5v on one of the pins
No spark, fuel is good. I'll grab the Volt meter and do some more investigating, Thank you!
May check for a bad ground for the coils on the block behind the PS pump.
I’ve seen on another video that the guy had that issue and fixed it with a new ring terminal.
Hope it helps.
I will look into that as well, thank you!
Or bad pins in the plug, 1,200 bucks at Tony's Chevrolet got me there. Looking like I'm going back to that as it quit again.
I had the same issue no power on driver side it was my ground wires by the crank shaft sensor left side
I will definitely remember that if it happens again. Mine ended up being bad ground from ecu to back of engine block.
I had the same problem turned out to be a bad connection on the top of the motor from the main harness to the coil harness replaced it and it was fine
what connection?
Have same truck with same issue some feedback new injectors new coils wires plugs po300 po200 well now po0300 code only
So after doing new MAF, MAP, Coils, plugs, O2 sensor, injectors and intake gaskets. Turned out to be a bad ground on the on the back of the block on drivers side. Check both passenger side and drivers side grounds would be my suggestion for your next steps.
@@MitchCarveth ty it was a ground on the back of block and well the one ignition relay well there's a certain way they go in a parently and switch relay or flip it around truck came to life
Any update on this? I'm have the same issue currently
The big white connector, push on it, if you notice the truck run better it's that. Chased it for years
Check your negative cable on the back of the driver side head I had the same problem brother
I appreciate it brother man, I found that to be the issue. Unfortunately after fixing it the valve spring broke during tuning and now I’m building a 6.0
I feel your pain brother! I had the same issue one said no fire. Noticed that the wire for the passenger side fire wall harness plug was toast. So I ordered oem harness for the coil packs for 2-4-6-8 hooked it up and now it won’t even start. I’m going to check the cam crank sensor’s next. Thanks for the video!
I hope you get it figured out! Mine ended up being the ecu ground cable that goes to the block going bad.
Did u fix it?
I just fixed mine. It was a weak ground from the comp. To the coil harness.
Im glad to hear it, Thats the only other thing I can think of now, I've checked all other engine and chassis grounds, swapped in new fuses and got new coil harness. I just need to find the ground your talking about now.
Just tap into the black wire on your coil pack harness and run a new ground to it.
Im not the biggest fan of wiring, thank you so much! I will be giving this a try this weekend.
@@MitchCarveth Make sure you update the video so we can see how that thing runs.
I will do an update video for sure! I've got footage of trouble shooting right now, just didn't want to do another hey its not running yet video lol
Bad comp ground, have u scanned it?
Where is the comp ground located
@@darrikanglemyer3800 im not 100%, i work on mercedesbenz diesel engines and there has been a large amount of computer boards that share a ground inside the board for half the cylinders, when the comnection in the computer fails it drops half the engines cylinders. It could be a completly different setup just something ive learned. Need to ohm out your wire and trace them back to ecu. Make sure continuity to board. Maybe also a led volt checker to see if they pulse at all then crankin.
Same problem. Ran wire from black on harness to firewall ground, fixed problem. Bad ground.
Ever get this truck figured out?
I figure mine ground wire to coil pack on harness (black wire
@@ricardofuentes2766 so you had to put a ground wire to a coil pack bolt?
@@reapertypebeat3963 look if u expose ur harness right by where it splits to create d connector for ur coilpacks driver side. U will find a black color with is d ground for ur harness coilpacks section . Now u fallow make sure it's no cut or some other wise ur truck will never crank even with started fluid.
Tip that wire lead were ur batter ground bolts in. Driver side of d block
@@ricardofuentes2766 i have no spark on passenger side I just swapped the motor
sounds like the timing is off I would open the timing cover and check if the crank lines up with the cam gear . Make sure they are aligned perfectly just being off by one tooth can cause this.
Feel you my 2005 Silverado has no power to injectors and coil on passenger side
Did you check the passenger side ground at the back of the block behind the intake manifold? I double checked mine and when I wiggled it the wire snapped, it was a bad ground to the ECU on the drivers side for me the whole time.
Nope didn't see that one it be next
defiantly check that one out
Can't tell if if good it wiggles easy
Thinking of redoing that ground and move it somewhere little easier to get to
Bro it's the coil harness connector
I dont think its a fire issue. Its a fuel injector no power issue
Check your relay for bank one
all this money youre dumping into the truck to get it working just order holley efi and be done with it
It's on the list for sure, right now its more trying not to let it best me while I save up for the holley.