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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 08-01-2005, 08:55 PM   #1
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Default tps problem fixed, next problem......

well saturday i was speaking with someone about my tps sensor that went bad. well i changed it and it idles great, throttle response its 10 fold, and acceleration 10 fold.
well now my problem is after i let off the gas between 1500 and idle(800) rpm the motor shakes like all holly heck. and you can fell it throught the whole car. well i flashed the computer and there are no codes stored. could this just be something stupid like a fowled plug?? i just changed them not long ago though. any ideas???
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Old 08-01-2005, 10:52 PM   #2
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No idea if your car suffers bad harmonic balancers like we do...but it might be starting. Check the rubber for cracking and whatnot
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Old 08-02-2005, 04:06 AM   #3
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A harmonic balancer won't cause shaking, just rattling noises.

Use the procedure in the FSM or Chilton'* #28200 to adjust the TPS. Or get a scantool on it to see if the TCC is disengaging when requested.
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