Escort ZX2 L4-2.0L DOHC VIN 3 (2000)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
NOISE DIAGNOSIS
1. Open the hood.
2. Verify the condition by operating the vehicle for a short time.
NOTE:
^
Key symptom is elevated idle speed while noise is occurring.
^
"Snapping" the throttle can induce the noise.
3. Inspect the ISACV. If physical evidence of contamination exists, install a new ISACV.
4. While the noise is occurring, either place an EngineEAR probe near the ISACV and the inlet tube, or create a 6.35 mm (0.25 in) - 12.7 mm (0.50
in) air gap between the inlet tube and the clean air tube. If the ISACV is making the noise, install a new ISACV.
5. Test the vehicle for normal operation.
For further information regarding the diagnosis of this component please refer to Computers and Control Systems; Testing and Inspection.