Strange RPM drop after letting off throttle.

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Feb 28, 2009 | 08:11 PM

mr_jits

Thread Starter

1st Gear

Joined: Nov 2008

Posts: 15

Strange RPM drop after letting off throttle.

Hey guys, I did the timing belt on the car yesterday, and after filling coolant and starting it up I noticed after revving the car to 2k rpm and letting off the throttle that there was a dip in RPM's below the normal idle. Is this normal?

Feb 28, 2009 | 08:31 PM

Tweaked

3rd Gear

Joined: May 2008

Posts: 1,900

From: CT

It's usually a fuel metering issue or vacuum leak. Could be a failing MAF or small vacuum leak. If you have access to a VAGcom, check fuel trims.

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