darn thing dies doesn't die, I'm pulling my hair out - 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 06-03-2009, 01:09 AM   #1
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Default darn thing dies doesn't die, I'm pulling my hair out

I've got a 96 Bonneville SE vin K, that I'm about ready to shoot. It has 215k miles on it and up until about a month ago has been a fairly good car(except for lwr intake gasket leaks, upper manifold replacement the usual 3.8 stuff) Fairly recently it started shutting itself down randomly after running for 15-20 min. Sometimes fires right back up and sometimes needs to sit for awhile before it'll restart. What is happening is it quits firing coils and injectors. No codes except every once in awhile it throws a crank or cam sensor code(both have been replaced) ICM has been replaced, PCM has been replaced, Pass-key is working. Fuel pump and everything else works. One thing that I noticed today is the speedo is drops and then reads like normal then motor shuts down (it will die at an idle at times to so it'* not a moving issue) Worse of all when it is running no matter what you wiggle bang on or anything else it will not die. I have been through wiring diagrams several times and I'm at a complete loss. I know that when I get this thing fixed it'* going to be something retarded but, I can't find it. I've heard of a bad TCC solenoid causing problems like this, but, on this year can't see where it ties in that would cause a loss of ground like it did on earlier models(at least that I see in the diagrams) The worst is sometimes it runs for 100 miles or more without a hitch. Sorry for the long thread but, one more thing, when we bought the car 4 years ago it had a stuttering problem that got traced to the ICM plug, but, when I was diagnosing that had noticed a po had replaced everything that seems to be causing problem now, I think the two are interconnected but, why no problems for so long. Any ideas I'd really appreciate
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Old 06-03-2009, 07:39 AM   #2
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might try unbolting the coils . taking the module off and check the bracket and module for corroison. that bracket is your ground for the coils and crank sensor . it happened on my skylark . it did the same thing as yours.
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Old 06-03-2009, 08:37 AM   #3
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Hmmm you've changed out the usual suspects.

Have you checked the wiring to the crank sensor to see if there'* maybe a break in a wire?

Edit...also.. have you checked and cleaned the battery cables?
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Old 06-11-2009, 10:06 PM   #4
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Quote:
Originally Posted by BillBoost37 View Post
Hmmm you've changed out the usual suspects.

Have you checked the wiring to the crank sensor to see if there'* maybe a break in a wire?

Edit...also.. have you checked and cleaned the battery cables?

Got Any Pics of this
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Old 06-12-2009, 09:09 AM   #5
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Hi,
I had the same experience w/ my '99 Bonne SE. Turned out that when I scanned it I got P0102, low volume air flow. For the replacement O2 device, shops wanted $250+++!!! eBay was all more then $120 for the part alone. I called around to reputable junkyards and got one for $50! That plus the scanner(B&D...$80 GREAT!) I saved enough already to be happy about it. Also, I found that encasing the plugs of the wires at both ends w/ electrical tape is an effective cost efficient way to remedy arcing and other issues there. GOOD LUCK! Bill
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Old 12-31-2009, 11:32 PM   #6
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Well, several months later and lots of cussing it'* back on the road again. Damn, crank sensor I replaced only a year or two ago had failed. sigh, oh well, got the green whale back on the road and honestly it'* still the only gm product I'd ever own. thanx for the help and by the way, I'm pretty damn famaliar with the systems on these things so I'll try to come on and help when I can. happy new year to all!!
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Old 01-01-2010, 03:20 AM   #7
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Wow, 6 months. Glad to here you got it worked out. Hope you stick around and chat it up.
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