Stalling while driving - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-17-2007, 10:20 AM   #11
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where are you located? I wonder if there is someone near you that could give you a hand..

If you were in central FL we could help...

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Old 12-17-2007, 08:12 PM   #12
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Default Stalling while driving

Biggr101,
Thank you for the ICM tip. I have very thoroughly cleaned the ICM bracket. Now I have visually looked over the harness to the ICM pretty well. That would leave trying to use some sort of test leads to check for continuity for each connector from one end to another, That will be a challenge but I will attempt it. There just doesn't appear to be an issue with the harness but you never know. I am glad yours got straitened out. If it is a harness issue would any ICM harness from 94-95 SE'* be compatible that you know of?

Jr's3800,
I very much appreciate the offer of assistance however I am clear across the country from you, I am in Idaho
I was kind of shell shocked at what the fuel pump replacement cost was going to be last week so the part in the test report that listed the pressure and spark were "normal" went right past me until I pulled it out last night and reread it. Sorry for not catching that sooner and posting it at the beginning.
What does that added bit of information lead you to conclude? Again, Thanks for everyones input.
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Old 12-17-2007, 08:20 PM   #13
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Its hard to say at this point.. If I was closer we could throw parts at it as I have several of them... ICM and PCM to boot...

But its just too hard to say what the issues is at this point.. It could be any of them..

If you were to start the car and let it idle would it die in a short period of time? and if it did and you restarted would it shortly die again?

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Old 12-17-2007, 08:46 PM   #14
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Jr"s3800
Man I do thank you for the willingness to try some of your spare parts! To bad about the miles:(
On a couple of occasions of starting the car in the morning to warm it up to defrost the windshield and after some minutes it has died in the driveway while I was getting my work clothes on, so it had warmed a little, not fully, but enough to jump in restart and drive off with. I haven't tried restarting and letting it idle again to see how long it would stay running, just drove off to work.
I am trying right now to let it idle to see if it will die, restart and see how long it will run, If it doesn't die now I'll try it on several occasions to see what happens.
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Old 12-17-2007, 10:35 PM   #15
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I'm guessing ICM or PCM.. I might be able to plug in my bad one tomorrow and get some vid... I know that PCM will stall the car out for fact...LOL...

Let us know what you find...

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Old 12-18-2007, 12:35 AM   #16
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Default Stalling while driving

Hi Jr's3800
My car just idled in the driveway for over 20 minutes just as pretty as you please, as if to say "I'll quit when I'm good and ready" which it never did. I'll try again tomorrow morning.
If you were to buy a new PCM where would you get one that had a reliable reputation?
What model number and price would that be?
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Old 12-18-2007, 12:56 AM   #17
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I'd get an AC Delco but the cheapest I have seen for one is 250ish...

A cardone would in the area of 80-120 depending....

But Its still to hard to say yet if thats the problem..

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Old 12-18-2007, 01:44 AM   #18
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Default Stalling while driving

I here what your saying as to not knowing what the exact nature of the problem is., PCM, ICM, fuel pump?
My question about the type and cost for a PCM was to help in weighing my options.
Your suggestion for the AC Delco would be the one that would be the most reliable. At $250.00 it really puts the squeeze on.
A unit for half that may not be as long lived but if it got me past several straight months of no stalling then it may be worth the gamble and replace it later for an AC unit and the confidence that the investment was a well placed one.
I have been battling this since last June when I began with replacing the crank sensor, (at the suggestion of the service shop because it had failed on me before), the symptoms becoming more more frequent as of the last couple of months, and scouring the various posts and remedies in the forums here that i could try that might fix my problem have brought me to the place of having to make a much larger financial repair if the harness turns out to be o.k. I won't be able to check it until Wednesday at the earliest.
I am still open to suggestions that you all may have.
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Old 12-20-2007, 12:42 AM   #19
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Default It appears . . . same problem occurring on my 95 Bonneville

I have a 95 Bonneville--proudly reporting 207,459 miles. I have been reading your forum. I await to hear the outcome of your dilemma. I hope your solution is the same for me. What does all the acronyms mean--PCM? ICM?
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Old 12-20-2007, 12:50 AM   #20
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Default Re: Stalling while driving

Quote:
Originally Posted by Aubie08
I here what your saying as to not knowing what the exact nature of the problem is., PCM, ICM, fuel pump?
My question about the type and cost for a PCM was to help in weighing my options.
Your suggestion for the AC Delco would be the one that would be the most reliable. At $250.00 it really puts the squeeze on.
A unit for half that may not be as long lived but if it got me past several straight months of no stalling then it may be worth the gamble and replace it later for an AC unit and the confidence that the investment was a well placed one.
I have been battling this since last June when I began with replacing the crank sensor, (at the suggestion of the service shop because it had failed on me before), the symptoms becoming more more frequent as of the last couple of months, and scouring the various posts and remedies in the forums here that i could try that might fix my problem have brought me to the place of having to make a much larger financial repair if the harness turns out to be o.k. I won't be able to check it until Wednesday at the earliest.
I am still open to suggestions that you all may have.
Aubie08
Would you happen to have another 3800 around that you could borrow the ICM from? Any 3800 ICM from 93-current should work... Might be a good free test..

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