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Comments
I'm curious if you ever figured this out. I have a very similar problem after putting a new battery in my car (i.e. whole thing is dead after trying to start). suggestion I have is checking cabling to starter as it might be the culprit.
A Recap of What I Did:
GM issued a TSB describing the problem for Buick, Pointiac, Chev. I cleaned off the terminal end and the car body where it bolts down. I also used some white silicone grease as the TSB suggested but went one step further and placed a washer that would "bite" down into the body to give it a better ground - the ground only appears to be coming from the bolt and its threading. I followed up with some rust-proofing paint to slow future corrosion.
Not enough air or not enough fuel. Check the air filter - I find it does help some of the rough idling - but not stalling. I was told that there is a piece on the accelerator that moves in and out - that gets worn and this would account for a rough start or stalling. 2005 is fly by wire but the principal is the same. I haven't looked at mine yet (2005 GP) but similar engine. Oxy sensors are a common problem - for a '99 your likely due and they relatively easy to get at.
The V6's are prone to gunk build up on the drive chain so if you are at a high millage nearing 300k this could be the case. Change your oil frequently and I throw in some de-dunk cleanser in the fall just before winter. For the winter oil mix I'll throw in some Lucas oil.
I am wondering if it has to do with the alarm system. I have a new battery and crank sensor, and I am a poor girl so I would appreciate any advice on this subject that you can give.
Thanx for the help. I was told that the CAS and crank sensor were replaced about 6 months ago. The car also chases idle up and down on startup.Tom
Good luck!
I also asked a friend to clear all the codes and she's running like new. I have been on long trips and short trips, and I have rectified the problem....and she's running like new again.
Also, there was a code for the gas tank vent to be replaced?? Keep getting a "gas cap" warning on the DIC but the cap is replaced properly everytime we add fuel. PLEASE HELP.
THANKS
Second i now have a problem when i accelerate fast it seems like it not getting gas which this problem just started like 2 weeks ago and it seems like there no power but when i accelerate normal i can go 100mph easy i have changed the ecm,plugs,wires,coils,ign control mod im just lost now can any body give me any more ideas thanks
I apologize for your frustrations. Have you spoke with your dealer? If not, I would recommend doing so. Please keep me updated on your situation.
Christina
GM Customer Service
It cleans the engine to remove buildup. I had the same problem when starting and got this done. I used to have to hit the gas on startup otherwise it would stall. You should not need to do this on a fuel injected car. After it was done I have not had any more problems. Cost $100
Has a new battery, new fuel filter, cleaned the ground wire as suggested on this forum. Any one have any ideas?