What can cause engine to race after warmed up?
When first started it idles as it should, then slows as it warms, then after it is fully warmed the engine idle starts to increase until it reaches about 3000 rpm's without touching the throttle.
It has been checked for vacuum leaks and the Idle Air Control Valve was first cleaned then replaced, with no change.
It also has a new fuel pump and pressure regulator.
Sunday, December 2nd, 2012 AT 6:13 PM