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Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

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Old 03-14-2006, 08:54 AM   #11
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mine has that issue too, never thought anything of it though.
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Old 03-14-2006, 09:18 AM   #12
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I doubt it would cause any issues, but if it is a vacuum leak, it could cause a lean condition or KR at the top end. It'* more of a hint that something isn't quite perfect. It'* possible it could be a MAP problem, but that would seem to affect it at full boost, too.
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Old 03-14-2006, 09:42 AM   #13
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No problems at full boost (or full boost as far as stock goes..heh) The car was running really lean when I had the vac lines rotting, however that problem seems to have corrected itself with the replaced lines. Unfortunately finding a minor vac leak wont be easy. I wont worry about it for now as its not a major issue.
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Old 03-14-2006, 03:19 PM   #14
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Hmm I was told if the boost gage kinda hunts around a bit at idle, its normal...hmm...i guess no?
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Old 03-14-2006, 04:45 PM   #15
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Totally normal on both a 95 and 97 of mine.

Once warmed up all is well in the world. Keeping in mind that we have like mentioned confirmed our gauges to be questionable reference at best.. it'* my theory that GM intended the needle to never fully hit bottom or top, but merely stay within the range the whole time.
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Old 03-14-2006, 04:55 PM   #16
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My 92 doesn't move at all at idle. Will only move if I gently race the engine.
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Old 03-14-2006, 10:18 PM   #17
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well I know my mehanical doesnt move a bit and that is enough for me.

trust me my stock gauge can read 5 when its actually more like 8
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Old 03-15-2006, 10:30 AM   #18
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Thank you gents!
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Old 03-16-2006, 12:42 AM   #19
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Mine waggles a little until the engine gets hot.
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Old 03-16-2006, 10:08 AM   #20
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So Jim, at least it is in no huge problem. Of course like you said it would be hard to find a minor vacuum leak. Hopefully I will be able to find it with the help of people here.

As long as the engine isn't running really lean so I don't have any problems.
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