LT1-LT4 Modifications 1993-97 Gen II Small Block V8

need help with a vacuum leak

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Old 04-15-2011, 04:11 PM
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Default need help with a vacuum leak

just thru a code im guessing its vacuum leak cause the rpm are just hanging and jumping up to 3,000 rpm and not dropping until i stop, how do u find out where its leaking from?
Old 04-15-2011, 04:24 PM
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What code specifically? A vacuum leak would have to be huge in order to set any of the vacuum-related codes.
Old 04-15-2011, 05:55 PM
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P0507 - Idle Air Control System RPM Higher Than Expected



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