MAJOR Performance Problem SSEi Did a Ton of Testing No luck - Page 2 - 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 05-03-2006, 04:19 AM   #11
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Quote:
Originally Posted by J Wikoff
Where are you located?
Actually I'm in Illinois too, Batavia to be exact.
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Old 05-03-2006, 08:42 AM   #12
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Gtech meters are notoriously inaccurate. However, 16.0 seconds is about right for a stock 92. They were somewhat underpowered even compared to the 93'*, so your numbers aren't THAT far off. Ignore the G-tech. It'* only good for determining what rpm your hp or tq peaks at, not the actual peak value. ET and trap speed are going to be way off and all over the map. It is not a good diagnostic tool.

Your filter should be tested. Fill it with water and tell us how quickly it flows through. Do what you can to get your IAT'* down. That'* the way to get more timing.
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Old 05-03-2006, 10:59 AM   #13
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And where ever your IAT is at, make sure it is shielded from exhaust crossover heat. Mine is in my filter.
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Old 05-03-2006, 01:30 PM   #14
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Quote:
Originally Posted by willwren
Gtech meters are notoriously inaccurate. However, 16.0 seconds is about right for a stock 92. They were somewhat underpowered even compared to the 93'*, so your numbers aren't THAT far off. Ignore the G-tech. It'* only good for determining what rpm your hp or tq peaks at, not the actual peak value. ET and trap speed are going to be way off and all over the map. It is not a good diagnostic tool.

Your filter should be tested. Fill it with water and tell us how quickly it flows through. Do what you can to get your IAT'* down. That'* the way to get more timing.
16.0 is about right for a stock '92, but not one with the intake and exhaust opened up, fully tuned up, and with a 2.2" pullley. Trust me, I know that G-Techs are very inaccurate. I have never used one in the past, I personally go to the track. I used it to verify my belief that the car is a total dog. My IATs aren't that bad. I can take the headlight off to knock the temps down a bit, and the car will still be slow. The air filter is not a problem. The car runs the same with no filter whatsoever. I don't know if you read, but my car can't even spin the tires. Not at all. It'* honestly the slowest car I've ever owned even with the pulley and intake/exhaust.
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Old 05-03-2006, 01:32 PM   #15
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In overdrive with the cruise control set at 55mph, how many rpm'* of TCC slip do you read?
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Old 05-03-2006, 01:47 PM   #16
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Quote:
Originally Posted by willwren
In overdrive with the cruise control set at 55mph, how many rpm'* of TCC slip do you read?
I'll go out and check that in a few. That'* more along the lines of what I'm thinking might be the problem. This isn't the usual heat-soak, or my air filter is clogged down on power it'* pretty serious. The car screams like it wants to really get moving and the boost is there, but it just feels like there is no "pull" and it doesn't feel like it has the torque that the 3.8L (especailly boosted ones) usually have.
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Old 05-03-2006, 03:13 PM   #17
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Here'* what the scantool displayed:

TCC Slip RPM: 12 (stayed around 12, might have gone to 10 once)
TCC Lockup: YES
TCC Duty Cycle: ~75%
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Old 05-04-2006, 01:25 AM   #18
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This could be TOTALLY out there, but do you think it may have jumped time? I 99.999% doubt this happened, but if your cam retarted it would still show perfect compression and possibly not make any noise. Again, you sould like you have plenty of knowledge of cars but i'm just throwing it out there.
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Old 05-04-2006, 02:47 PM   #19
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Quote:
Originally Posted by alec_b
This could be TOTALLY out there, but do you think it may have jumped time? I 99.999% doubt this happened, but if your cam retarted it would still show perfect compression and possibly not make any noise. Again, you sould like you have plenty of knowledge of cars but i'm just throwing it out there.
That'* one thing that I've thought about. I just don't want to go through the hassle of opening up the timing cover to check it. It'* definetly a possibility though.
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Old 05-04-2006, 04:23 PM   #20
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clean the MAF, replace your O2, those helped me out a lot.
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