[ddurham]

Anyone ever hear of our cars throwing this code? It's "Idle air control system RPM higher than expected." I did notice that the idle has occsionally held at 1200 but returned to normal when I blipped the throttle. The car is an '05 Elise (i.e. the ones with a conventional throttle cable). Could it be something as simple as a throttle cable? Would that throw a code? Thanks

 

[charliex]

The IAC is unable to control the airflow as it wants, so either somethings sneaking past elsewhere, bad or dirty throttle body, air leak or somethings binding up the throttle cable. could be a bad IAC too.