Diesel Data: Automotive Repair

Idle Speed


NOTE: Idle speed is not adjustable. Powertrain Control Module (PCM) controls idle speed through Idle Air Control (IAC) Motor. Perform minimum air flow test. SEE DIAGNOSIS, TESTING AND INSPECTION PROCEDURES

MINIMUM AIRFLOW TEST IDLE SPEED

ODOMETER READING IDLE SPEED

Less than 1000 miles 600-1,150 RPM
More than 1000 miles 650-1,150 RPM