Have a 04 3500 6.0 that skips after cutting it off & restarting within a few min
What is your question?
This is heat related and I have tried changing multiple things. Plugs, wires, coil packs, Cam PS, injectors, MAP, TPS, IAC, still same result. I can play with the throttle (on & off real quick) and it will clear up and run fine, unless I go somewhere and cut it off and get back in within a few minutes. If the engine has time to cool back down, it's ok.
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Have fuel injector balance test performed!!.. This test has to be done with a professional scanner and a fuel pressure test gauge.. Suggest a good professional quality injector cleaning as per GM TSB before replacement of any parts!
Thanks pushrod for the reply, I've put new injectors in after this started, failed to mention that I also changed the fuel pump and MAF after this started. I am not sure how the fuel injectors would be out of balance, only when the engine compartment gets very hot. This engine is crammed under a hump, with very little hood. Speaking of which, I can prop the hood up and it will not act up. Which brings me to another situation, I think it is also causing the paint on the hood to peel so badly on this style of vehicle. I'll call the dealership to see what they will charge for this procedure.
Doesn't have to go to a dealer!.. That is just a suggestion as to what I would if I were checking it out...along with other diagnostic test of course! .. This test the injectors output to see if each one is exactly the same (balanced)!.. IF an injector is leaking fuel after shutdown, ..well...there you go... It's hard to do much more than guess at it over the Internet!
Ok pushrod, thanks. I do not know any other good mechanics around this area, but I will look around before doing anything. Things sure have changed since my 57. Way too many sensors and electronics.
LOL... Yep, I remember them days too... and I agree!!!.. It's finally going to get to where they have got to go back to the dealers for diagnosis by the main computer....in the next few years.. Glad I'm about to hang up the wrenches!!.. Good luck with it!
Thanks pushrod for the reply, I've put new injectors in after this started, failed to mention that I also changed the fuel pump and MAF after this started. I am not sure how the fuel injectors would be out of balance, only when the engine compartment gets very hot. This engine is crammed under a hump, with very little hood. Speaking of which, I can prop the hood up and it will not act up. Which brings me to another situation, I think it is also causing the paint on the hood to peel so badly on this style of vehicle. I'll call the dealership to see what they will charge for this procedure.
Doesn't have to go to a dealer!.. That is just a suggestion as to what I would if I were checking it out...along with other diagnostic test of course! .. This test the injectors output to see if each one is exactly the same (balanced)!.. IF an injector is leaking fuel after shutdown, ..well...there you go... It's hard to do much more than guess at it over the Internet!
Ok pushrod, thanks. I do not know any other good mechanics around this area, but I will look around before doing anything. Things sure have changed since my 57. Way too many sensors and electronics.
LOL... Yep, I remember them days too... and I agree!!!.. It's finally going to get to where they have got to go back to the dealers for diagnosis by the main computer....in the next few years.. Glad I'm about to hang up the wrenches!!.. Good luck with it!