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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 09-14-2006, 09:19 AM   #1
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As some of you know I had a misfire, and every time I reached 0boost the car began to sputter.. The coils were fine and I changed the plugs and wires, and now the current is flowing a noticeable difference!!! I am noticing the normal lag at 40-50mph,
BUT when ever I get to 0-3 boost I get another lag... wtf!!! I could be going 60 or 70 mph and when I hit 0 boost it begins to lag, step on gas and i am cruising again. this does not happen at WOT just at cruising speeds.
what could of happened to cause this?
could the misfire have damged any thing else?
all vaccum lines are connected and and no brocken lines were found.
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Old 09-14-2006, 12:21 PM   #2
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Old 09-14-2006, 12:29 PM   #3
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Please..

One post per problem. You are keeping all of us running around trying to read up on all the different things for this on problem that we simply can not reply quickly to all posts.

Things I know of. you changed plugs, wires and O2 right?

You put up a video of some knocking sound. Did that get resolved? If not, it'* very possibly you have KR pulling timing.
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Old 09-14-2006, 12:54 PM   #4
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Quote:
Originally Posted by BillBoost37

Things I know of. you changed plugs, wires and O2 right?

yes..

You put up a video of some knocking sound. Did that get resolved? If not, it'* very possibly you have KR pulling timing.
knocking issue is not resolved.. i was told it might be the harmonic balancer...
the harmonic balancer doesn't have any play or wobble and didnt look bad like pic
in haro'* post. could that still be the problem? if so i will change.

do the 96'* have the LIM UIM failure problem?
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Old 09-14-2006, 01:54 PM   #5
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From an upper intake point, your upper intake is your supercharger. No composite to fail.

Lower intake gaskets are plastic frame from the factory and are known to degrade over time with Dexcool. Bad gaskets shouldn't give you the knocking sound in your video though.

You need to determine where the knocking is coming from and fix that item before wondering why you might have lower power.
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