Thread: RPM fluctuation
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Old 07-21-2017, 05:47 AM   #7
jcslocum
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Join Date: Aug 2015
Location: Eastern Shore, MD
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Quote:
Originally Posted by mountainman View Post
Cleaned the MAF and throttle body and checked around for vacuum leaks, which I didn't find. Still have fluctuation. Any other ideas?
There's a LOT of hose on a Box, so you will need a smoke machine (easy to make) to get a full test. Duramertic would be helpful if you had one.

The booster was hard to test because it takes a bit of vacuum to pull it down to check. A vacuum pump is helpful. We could hear ours leaking with my head under the dash when that car was idling.
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