Calais L4-151 2.5L VIN U TBI (1989)
Air Door Cable: Customer Interest
Heater - Revised Low Heat Delivery Diagnosis
NUMBER:
91-T-201
CORP.REF.NO: 131104
DATE:
October 1991
SECTION:
1A, 1B
SUBJECT:
SERVICE MANUAL UPDATE - REVISED PROCEDURE FOR LOW HEAT DELIVERY RELATED DIAGNOSIS - ENHANCED TEMP.
CONTROL CABLE ADJUSTMENT
MODELS/YEARS:
1989-91 CALAIS
On customer comments of low heater output on 1989-91 Calais, before replacing a suspected defective engine cooling thermostat, proper diagnosis of
the conditon must be performed to avoid the possibility of a repeat repair. Follow "Diagnosis" as shown in Section 1A/1B of the appropriate Service
Manual. After completing the diagnosis, use the following as a guide to the next corrective step:
^
If the diagnosis indicates a defective thermostat, refer to Section 6B for replacement.
^
If the diagnosis indicates a defective temperature control cable, refer to Section 1A/1B for replacement.
^
If the diagnosis indicates the temperature control cable is no longer "snapped" into its retainer, refer to "Temperature Control Cable Repair" in the
1991 Service Manual, Sections 1A/1B.
^
If the diagnosis indicates that the temperature control cable is out of adjustment, refer to the following procedure to repair.
TEMPERATURE CONTROL CABLE ADJUSTMENT PROCEDURE
CONDITION 1: "Spring back" off full "hot" temperature control position (or not attaining full "cold" temperature door position).
CONDITION 2: "Spring back" off full "cold" temperature control position (or not attaining full "hot" temperature door position).
