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B234F idle vacuum Q. 700

posted by  someone claiming to be Volvoman on  Sun Dec 10 09:58 CST 2006 [RELATED]

In my effort to find the cause for a gradually worsening fuel economy in my -88 GLT 16 valve I bought a cheap vacuum gauge to check for leaks. Unfortunately, the only I bought was without a scale but I still noticed something interesting:

The manifold pressure when idling is higher (closer to atmospheric pressure) than at 2000 rpm (car standing still). Is this normal? If not, what could be the cause?

The car runs fine and no error codes are set. Tailpipe CO is .7%.

TIA






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New B234F idle vacuum Q. [700]
posted by  someone claiming to be Volvoman  on Sun Dec 10 09:58 CST 2006 >


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