Bandit's Surging/Poor Idle - Page 4 - 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 11-11-2006, 05:50 PM   #31
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wjcollier07, did you try cleaning the MAF sensor first? Sometimes just cleaning the tiny, tiny wires inside will bring them back to life. Bandit, you may want to try this too as it is free.
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Old 11-11-2006, 05:54 PM   #32
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Quote:
Originally Posted by motorhead
Just above idle, part throttle, normal acceleration. Right when you are having your trouble. Fix the EGR issue and I'll bet the stumble will be gone.

BTW, EGR opperation is not usually allowed by the PCM until the engine is warm, so if this is only happening on a warm engine then that would kind of tell me that it is related to your EGR fault.

Unplug the EGR valve and drive it, does the problem go away?
i bet its not the problem cuz it started doing this before i had that EGR code come up, and the Does always come on when im having the problem. But ill try it, cuz i need to do it anyway
Also is does it when its cold in the Close loop, so that makes it even more confusing..

John, I might try that also, Cuz i did the one thing people say that can kill them, i sprayed it with Carb cleaner that was before i knew that was a bad idea..
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Old 11-11-2006, 06:51 PM   #33
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Guys...it'* happening when he'* sitting still at a stoplight and other times. Car can be cold or warm.

Bandit.. someone called me, and we discussed your problem. Do us a favor. Drive home with only one foot tonight. Theory has it..you might be leaning on a pedal slightly, causing the surge.
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Old 11-11-2006, 06:59 PM   #34
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Quote:
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Guys...it'* happening when he'* sitting still at a stoplight and other times. Car can be cold or warm.

Bandit.. someone called me, and we discussed your problem. Do us a favor. Drive home with only one foot tonight. Theory has it..you might be leaning on a pedal slightly, causing the surge.
Nope, i take my foot off the gas when i stop, i hold it off it.

but ill try it, but i don't have the problem that often when stopping, it more just taking off or if i power brake it a bit at the light, just a little on the gas.

But it does it 90% time when taking off.

sometimes i can start the car, and go, and nothing will happing, it works 100%, then other time start the car, and right off the bat even cold it will do it.

so its unpredictable on when it does it so far.

I will try it for half the drive home and then if its still doing it il will go back my normal way and see if it changes at all on how it happens.



Bill- Do you think i should Take me MAF out and clean it again?
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Old 11-11-2006, 07:16 PM   #35
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I know I'm not Bill, but did you just clean it? Then I would say no. You could also disconnect the MAF and drive it, see what it acts like. When the MAF is disconnected the PCM goes to a set MAF value. However this is not a 100% test as the problem may be elsewhere and not act up with a fixed MAF value.
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Old 11-11-2006, 11:30 PM   #36
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I know I'm not Bill, but did you just clean it? Then I would say no. You could also disconnect the MAF and drive it, see what it acts like. When the MAF is disconnected the PCM goes to a set MAF value. However this is not a 100% test as the problem may be elsewhere and not act up with a fixed MAF value.
Get off your horse and get a clue ... motorhead... no one here believes that they know everything.

Ryan..since you cleaned it with brake cleaner on it.. I'd say it'* worth a shot. Unplugging it as motorhead mentions is the FSM way to check for an issue with it. Expect that you may get a CEL from it.
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Old 11-12-2006, 12:29 AM   #37
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Ok did that test with the MAF.

Still having the same problem. :(
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Old 11-12-2006, 01:12 AM   #38
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It'* time for the Tech 2
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Old 11-12-2006, 01:19 AM   #39
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Quote:
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It'* time for the Tech 2
or the Actron that will do the same thing for 1/3 of the cost


expensive parts are not always the solution Mac....
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Old 11-12-2006, 01:33 AM   #40
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I was thinking maybe he could borrow one somewhere (like a friend that works at a dealership). I got one of those, but he'* never home.
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