1992 Bonneville SSE running horrible after Seafoam - Page 5 - 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 02-24-2005, 09:26 PM   #41
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For what it'* worth, here is a link to an article regarding testing for a vacuum leak with ether (starting fluid). I have done this many times and it works. If you have a leak you'll usually find it. I would also say that ether should be used sparingly and with caution. If you aren't comfortable with it don't do it. But it might be worth a try in the process of elimination.

http://www.racetep.com/vacleak.html
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Old 02-25-2005, 12:14 PM   #42
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Tommorow will be test day for leaks, clogged cat, and anything else I can find
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Old 02-25-2005, 03:01 PM   #43
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Where do you live?
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Old 02-25-2005, 06:09 PM   #44
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Long Island, New York
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Old 02-25-2005, 06:25 PM   #45
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Hmm, you might have a bad fuel injector. My dad'* had the same exact symptoms, turns out that one of his injectors went bad. Test your fuel pressure. I'm not exactly sure how you can test the injectors but however you do, give it a shot. I doubt that the MAF and/or the IAC, but at least check to make sure. Good luck.
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Old 02-27-2005, 02:42 AM   #46
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Went over the car top to bottom today, the Ignition Control Module was the culprit, changed it out, car is runnig great. I thank everyone for their suggestions.
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Old 02-27-2005, 10:08 AM   #47
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Default Re: FIXED

Quote:
Originally Posted by montess1986
Went over the car top to bottom today, the Ignition Control Module was the culprit, changed it out, car is runnig great. I thank everyone for their suggestions.
It figures! Stupid electrical gremlins....

Thanks for following up, I was curious as to what the heck the problem was...
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Old 02-27-2005, 11:01 AM   #48
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Default Re: FIXED

Quote:
Originally Posted by montess1986
Went over the car top to bottom today, the Ignition Control Module was the culprit, changed it out, car is runnig great. I thank everyone for their suggestions.
Glad to hear you got it running good... Sometimes its the simple things that cause the most headache...

Did you have the ICM tested or did you just swap it out as a test?

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Old 02-27-2005, 11:45 AM   #49
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Well, Ive been noticing that the spark from the top two posts of the coil wasnt as hot as the other 4. I showed this to a couple buddies, we pulled the injector plugs, figured out that it was the top two posts, where the cylinders werent firing. On another mechanics recommendation, we swapped out the ICM. On another note autozone was 100 bucks cheaper than anywhere else for the module, only 125 bucks. Car now runs great, however today I now have to troubleshoot a slight transmission leak. It never ends. Does anyone think cauzing a big vaccum leak by pulling off the brake booster vaccum line could have damaged the ICM or was it just a freak of nature?
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Old 02-27-2005, 11:51 AM   #50
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No bud that was a freak of nature.... The ICM usually does one of 2 things, either it fails completely, or it becomes very very unstable...lol... I have had that happen before... Its not pretty... Nothing you dod hurt the ICM in any manner..

You must have bought a Wells replacement module... Make totally sure you hang onto that reciept...

And the trans leak usually amounts to the pan gasket... I wish I had the factory original gaskets for my transmissions... Anymore I go down the road from autozone and get a filter kit with a rubber gasket as opposed to the cork gasket... I never leak a drop between tranny fluid changes...

Good Luck and let us know what you find with that leak..

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