P0507

DTC P0507: Idle Control System RPM Higher Than Expected (2004-2005 models)

NOTE: If DTC P051118 stored at the same time as DTC P0507, troubleshoot DTC P0511 first; then recheck for DTC P0507.

1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.
2. Check the engine speed at idle without load conditions: headlights, blower fan, rear defogger, and air conditioner off.

Is the engine running at 750 ± 50 rpm?

YES - Intermittent failure, system is OK at this time.

NO - Go to step 3.

3. Turn the ignition switch OFF.
4. Remove the air cleaner from the throttle body.
5. Start the engine, and let it idle.




6. Put your fingers on the lower port (A) in the throttle body.

Does the engine speed drop below 750 rpm?

YES - Check the idle speed with a different load condition (electrical, A/C, gear position, P/S etc.). If it's out of specification, replace the IAC valve.

NO - Check for vacuum leaks at these parts:

- PCV valve
- PCV hose
- EVAP canister purge valve
- Intake manifold
- Throttle body
- Brake booster hose