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thstone · 02-11-2015, 11:51 AM

750-800 RPM is normal for a warm engine.

If you have a rough idle which creates engine/body vibrations then look into idle issues (ICV, MAF, vacuum leak, dirty throttle body, misfire, etc)

If the idle is fairly smooth but you feel engine vibration in the body then look into mounting issues like motor or trans mounts.

02-11-2015, 11:51 AM	#3
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	750-800 RPM is normal for a warm engine. If you have a rough idle which creates engine/body vibrations then look into idle issues (ICV, MAF, vacuum leak, dirty throttle body, misfire, etc) If the idle is fairly smooth but you feel engine vibration in the body then look into mounting issues like motor or trans mounts. __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor