vacume presure
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From: CALIFORNIA
Car: CAMARO RS
Engine: 3.1 V6,5.0 tpi
Transmission: AUTOMATIC, t5
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vacume presure
i have a 90 3.1 with cruse control and ac how much vacume should i read on a vacume gauge.
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From: Castaic, CA
Car: 1988 Camaro RS
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20 in. of vacuum is good on a new motor, but when the motor gets worn, anything above 16 is good. As long as it's arouns 16 and steady, don't worry about it.
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From: Palm Bay, Florida, USA
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Re: vacume presure
Make sure to read it at a small, ported vacuum source also...such as the FPR line, HVAC control line, etc. Don't try and read it from a bigger line like the brake booster, it'll read really low.
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