Runs Rough... Poor acceleration... - Page 3 - 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 04-01-2004, 04:57 PM   #21
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Originally Posted by jachin
If it is that bad then you might want to check to see what else is coming loose. Could a really bad vacume leak be causing these problems
I'm still getting 8 psi at WOT on the stock pulley, would that matter?

I'm also starting to wonder if it'* my fuel pump.. I'm going to do a fuel pressure test sometime in the next week or so.
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Old 04-01-2004, 08:01 PM   #22
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When mine did it it would actually give itself more boost and it would have higher rpms at idle. IM guessing thats because that was the only way it could stay alive.
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Old 02-08-2005, 01:52 AM   #23
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Default Re: Runs Rough... Poor acceleration...

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Alright, I give up.. I've been trying to fix this thing for like 3 months now. If i start it the car runs rough and sounds cammed, then it raises the idle to a little over 1500 and it smoothes out then drops back down and gets rough again.. I have had no check engine lights, but one came on about 2 weeks ago for Electronic Spark Circuit. I found low resistance on the primary side on one of the coils which I'm going to replace and see if it fixes. Also, when i hit the gas at WOT, the car pulls fairly strong and about halfway to redline, you can feel the car lose power like i lost a cylinder or something. My car has intake, exhaust, and a pulley and I got murdered by a cavalier Z24 last week that was bone stock.. somethings definitely not right. Does anyone have any ideas as to what it could be? It'* not a clogged cat, since I don't have one.. If I can't figure this out, I'm just going to put the stock pulley back on and put the airbox back in and drive it like an SE. :( Any help is appreciated.

ttt, any updates on your problem? did you find out anything causing your rough idle?
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