RPM's running 1300 HIGH

RandysROC
09-13-2006, 10:25 PM
'88 IROC 5.7 (L98) is running 1300 rpms too high. Do you think voltage is too low? Bad ground? Any ideas?

LesPaulGoth
09-13-2006, 10:38 PM
The tachs on these cars are well known for being wayyyyy off after a while. There is a resistor chip thing on the back of them that gets shot out at some point. There was a thread on this a few weeks ago, look it up, theres helpful info in there.

robvas
09-13-2006, 11:07 PM
Reset the base idle!

onefastgta
09-14-2006, 01:02 PM
Also clean the carbon from the inside of the throttle blades.