P0507

DTC P0507: Idle Control System RPM Higher Than Expected

NOTE:
- If DTC P0511 is stored at the same time as DTC P0507, troubleshoot DTC P0511 first; then recheck for DTC P0507.
- Information marked with * 1 applies to K20A3 engine; * 2 applies to engine.

1. Start the engine. Hold the engine speed at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
2. Check the engine speed at idle with no-load conditions: headlights, blower fan, rear defogger, and air conditioner off.

Is the engine running at 650 (*1) (700) (*2) 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 700 (*1) (750) (*2) 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 following parts.
- PCV valve
- PCV hose
- EVAP canister purge valve
- Intake manifold
- Throttle body
- Brake booster hose