Vehicle Cold Soak Procedure
WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
To carry out this procedure, proceed as follows:
- Test preparations include matching customer conditions (if known). If not known, document the test conditions: gear selection and engine RPM. Monitor the vibration/noise duration with a watch for up to three minutes.
- Park the vehicle where testing will occur. The vehicle must remain at or below the concern temperature (if known) for 6-8 hours.
- Before starting the engine, conduct a visual inspection under the hood.
- Turn the key on, but do not start the engine. Listen for the fuel pump, anti-lock brake system (ABS) and air suspension system noises.
- Start the engine.
- Isolate the vibration/noise by carefully listening. Move around the vehicle while listening to find the general location of the vibration/noise. Then, search for a more precise location by using a stethoscope or EngineEAR.
- Refer to SYMPTOM CHART-IDLE NOISE/VIBRATION to assist with the diagnosis.
CAUTION:
Never probe moving parts.