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.

Hesitating!!!!

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Old Jan 16, 2008 | 11:41 AM
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Default Hesitating!!!!

Hello,
My car lately has been hesitating under a load, but when i drive normal its fine, but say if I'm on the highway and i hit the gas to pass some one it kinda pops and shakes but if i hit the gas harder then it goes away. At first i was thinking it was my trans, but right now I'm not to sure, car was running awesome then we got a couple warm days here and that'* when it started. If any one has any ideas or need more info please let me know.
Thanks
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Old Jan 16, 2008 | 12:02 PM
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I would start with plugs and wires, and check the coils.
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Old Jan 17, 2008 | 11:10 AM
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My plugs and wires are brand new. I havent check my coils yet, ill check those.
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Old Jan 17, 2008 | 11:22 AM
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Originally Posted by irish91983
My plugs and wires are brand new. I havent check my coils yet, ill check those.
Techinfo shows you how.
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Old Mar 3, 2008 | 02:54 PM
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Still havin the same problem. but i noticed that when it happens i can smell my exhaust(rotten eggs) so my guess is that my o2 is bad and it wiped out my cat...any other ideas or info.
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Old Mar 3, 2008 | 02:55 PM
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New plugs and wires don't mean squat. Let'* get those plugs out and see what they look like. Post a closeup pic of them, and keep them in order so you know which came from which cylinder.
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Old Mar 5, 2008 | 02:48 AM
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I had a similar issue recently, would hesitate under load and mine wouldnt rev past 3k under acceleration. I did a wire replacement with Belden premiums and i found that there was rust on the connections between the coil packs and wires.

I know theres a small chance that this is your problem, but it wouldnt hurt to check good luck.
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Old Mar 5, 2008 | 04:38 AM
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check the fuel pressure regulator, i just replaced mine cause it was doing the same thing.
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Old Apr 1, 2008 | 10:56 AM
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Sorry it took so long to get back.. work has been keepin me busy, But i pulled the plugs and they looked good, (cant find camera) but i checked my coils and my top one would even read on the multi meter checked the others and they were fine, so i went to the junk yard and searched around for a coil that had the about the same readin as mine got it and installed it and problem fixed, Now im just waiting till pay day to buy a brand new one..

Thanks all for the input and help
Keith
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