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.

Few bugs to work out UPDATE

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Old 04-06-2006, 11:46 PM
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Default Few bugs to work out UPDATE

Car runs Significantly better with the Jet in and such, pulls about 4 degrees of KR at WOT.
I'm positive the top end is not getting enough raw fuel still, even after the new FPR, and fuel pump.
Scanner reads full rich at WOT in any gear for any ammount of time.
My EGR does leak exhaust, I am going to re seal that here soon
Ive been thinking on the adjustable FPR at intense...
Any ideas?
IT kinda fights maybe once or twice in second gear to pull above 4000 then it goes like a raped ape..fights a few more times in third gear at the same rpm range, when fuel demands are at there max.
Old 04-07-2006, 12:07 AM
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If your scanner says full rich at WOT, you don't have a fueling issue. The stock fuel pump will support 400hp for a Series 1 L67 (not true for the Series 2 stock pump).

Fix one thing at a time. Exhaust leaks may very well be your 4 degrees of KR.
Old 04-07-2006, 12:29 AM
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I hope so..
i noticed it when i ran the Seafoam, it was puffing from the EGR base, not the stove pipe.
Im just slightly baffled
Old 04-07-2006, 12:41 AM
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I AM running a 195 Tstat with that Stage Two, i had to though, it was cold out , reallllly cold out
Old 04-08-2006, 12:46 AM
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Update:
Im so close to cracking this now its not even funny
I have a miss of some sort 50% of the time the idle is hunting, especially when its warmed right up (190)
Went to pull into the garage tonight, nice and easy, tach at 1500 it was running in smooth then it was like it almost coughed a few times, like it would loose a cylinder for a half second.
Tomorrow I am driving 95 miles to the larges Parts yard around in Calgary, TONS OF GM stuff there.
I am gunna see i can swipe some Series II coils for diagnosing...
Any suggestions at this point, i think, whatever it might be, is also causing my KR.
Old 04-08-2006, 12:52 AM
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A miss won't cause KR. It leaves you in an overly rich condition, not lean.
Old 04-08-2006, 01:00 AM
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overly rich though, aka, my 02 sensor reads full rich, due to unburnt fuel, wihich, still makes me look at top end fueling.
Im so ******* confused, i just want to fix it.
Why does it only do this with the 2.2" pulley on, not with the 2.55"?
this is my main burning question
Old 04-09-2006, 12:37 AM
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Bleh, today i removed the 2.2 and reinstalled my 2.55"
Car is running AWESOME NOW
I cannot get it to even pull 1 degree of KR and it was 62 today.
WOT from 0-115 is excellent, car is faster with the larger pulley, in that 0-115 stint, there was no KR to be had, no stumble, no nothing.
Old 04-09-2006, 01:58 AM
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That'* good to hear, Matt. Are there any other intermediate pulley sizes you can try, instead of jumping all the way from a 2.55" to a 2.2"? Try work your way down to smaller pulleys.
Old 04-09-2006, 02:13 PM
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I could purchase others, but, it has a ton of kick already with my other suppoting mods.
This winter its under the knife again.
Going to get another LIM, and a Gen 3 SC with throttle body, do it slowly and get it all done right.
until then, im still confused as to why mine is working out this way..


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