October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Symptom Definition

Engine starts but will not run at idle. Engine will run if accelerator is held at part throttle.

Possible Cause & Correction Check the following:

Problem is most likely in Idle Air Control (IAC) system. See DIAGNOSTIC AIDS in CODE 35 chart in appropriate TESTS W/CODES article.
Check EGR system.
Check Park/Neutral switch.
Disconnect MAP sensor. If condition is corrected, replace sensor.