Boost Gauge Not on Zero...What Does That Mean!!! - 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 01-08-2005, 01:47 AM   #11
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ity bitty twitches.....
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Old 01-08-2005, 02:30 AM   #12
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I think the boost is controled by the PCM. Not sure. One thing I am sure of is the car will automaticly give more boost up hills. Even if you don't push on the gas more up a hill it will add boost so you don't have too. I have yet to drive up a hill in which i've had to force a kickdown.
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Old 01-08-2005, 02:56 AM   #13
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if its small twitches thats normal because the gage is electronic....
the reason ur car has more boost up hill is because the engine rpm lowers while the throttle position stays constant
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Old 01-08-2005, 04:57 AM   #14
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mine fluctuates quite a bit, and reads redline sometimes. it bounces all over and is never consistent. sometimes at alight, it will read just under 0, sometimes just over 0, and sometimes up at like 4 or 5. it bounces all over, what could it be?? MAP maybe?
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Old 01-08-2005, 06:06 AM   #15
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Quote:
Originally Posted by nathan
mine fluctuates quite a bit, and reads redline sometimes. it bounces all over and is never consistent. sometimes at alight, it will read just under 0, sometimes just over 0, and sometimes up at like 4 or 5. it bounces all over, what could it be?? MAP maybe?

Either a MAP or a bad vaccum line going to or from the MAP.
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