Caliber L4-2.0L VIN B (2007)
Thermostat Bypass Hose: Customer Interest
Cooling System - High Pitched Noise From Under Hood
NUMBER: 07-003-06
GROUP: Cooling
DATE: September 21, 2006
SUBJECT:
High Pitched Tone from Engine Compartment At Temperatures Below Zero Degrees F (-18C)
OVERVIEW:
This bulletin involves the installation of a new bypass valve and four 0-rings on the back of the radiator.
MODELS:
2007
(PM)
Caliber
NOTE:
This bulletin applies to vehicles built before April 27, 2006 (MDH 0427XX).
SYMPTOM/CONDITION:
The customer may experience a high frequency sound from the engine compartment at temperatures below 0° F (-18° C) while the bypass valve is
operating. This will be more noticeable at continuous speeds over 25 mph when the bypass valve has full flow.
DIAGNOSIS:
If the customer experiences the Symptom/Condition perform the Repair Procedure.
PARTS REQUIRED:
REPAIR PROCEDURE:
1.
Remove the battery following the procedures outlined in TechCONNECT. Refer to 8 - Electrical/Battery System/Battery - Removal.
