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.

Mid range mis

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Old 01-14-2008, 08:04 PM
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Default Mid range mis

New to the forum so be gentle. I just got a 1995 ssei that set up for 6 to 8 months. The guy I got it from said it ran fine when he parked it but now it has a mis when accelerating mostly around 2 grand. I changed the plugs and ran a can of seafoam through it but it hasnt helped much. I think its fuel related. I idles fine. This weekend I am going to change the fuel filter and see if that helps. Whats should the fuel pressure on one of these puppies ? I can check that tomorow :?:
Old 01-14-2008, 08:36 PM
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WIRES!


I had the same issue to a T... new set of wired cleared everything right up
Old 01-14-2008, 08:47 PM
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Going to give that a shot someone replaced 1 so if 1 was bad logic suggest the others are not far behind now if I can figure out how to get the loom off with breaking it it will be a breeze
Old 01-14-2008, 08:53 PM
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Originally Posted by tx-fisherdude
Going to give that a shot someone replaced 1 so if 1 was bad logic suggest the others are not far behind now if I can figure out how to get the loom off with breaking it it will be a breeze
what loom? on the wires? there notmaly isnt... if ther is take the wires off the car bring them inside to warm, and remove them from the wires that way... or just run the motor up to temp with the hood closed
Old 01-14-2008, 08:57 PM
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The wire loom is stuck to the valve cover and it looks like it wont come off without removing the dip stick and it isnt cold here in Galveston yet but from the looks of that pic you got there it looks dang cold there
Old 01-14-2008, 09:57 PM
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Originally Posted by tx-fisherdude
The wire loom is stuck to the valve cover and it looks like it wont come off without removing the dip stick and it isnt cold here in Galveston yet but from the looks of that pic you got there it looks dang cold there
HA, I read your post wrong I thought because you where worrying about the Loom breaking that it was cold climate ... your refuring to the wire retainer, inwhich you can remove the cover by sliding it to the left then it will pop right out
Old 01-14-2008, 10:00 PM
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OR, its just one bolt to undo the dipstick and it'll pop right out.

Its one of the most simple things you can do on this engine. Don't even be concerned.
Old 01-14-2008, 10:01 PM
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Thanks I will change them out and post up the results
Old 01-19-2008, 05:20 PM
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And the answer is plug wires. Runs Great now
Old 01-19-2008, 09:48 PM
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Originally Posted by tx-fisherdude
And the answer is plug wires. Runs Great now
Glad we can help

BC helps another save!


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