Electra Park Avenue V6-231 3.8L VIN C SFI (1989)
Control Assembly: Customer Interest
Climate Control - Blows Cold Air During Extended Idle
Bulletin 90-1-4
Date Feb. '90
Ref.No. 90-047-1
Corp.Ref.No. 901207
SUBJECT:
C68 CLIMATE CONTROL BLOWS COLD AIR DURING EXTEND IDLE IN COLD AMBIENT TEMPERATURES AMBIENT
SENSOR LOCATION CHANGE
MODELS AFFECTED:
1989-1990 ELECTRA AND LESABRE MODELS WITH C68 CLIMATE CONTROL AIR CONDITIONING
A condition may occur on some 1989 and 1990 Electra or LeSabre models with C68 air conditioning where during extended idle, the ambient sensor will
be influenced by radiant heat from the radiator.
If this condition occurs, the exterior temperature display on the A/C control head will show a much higher reading than true ambient temperature. The
false higher reading may cause the system to blow cold air cooling the vehicle interior below the requested temperature.
IMPORTANT:
This condition will be apparent ONLY on extended idles generally longer than three (3) minutes. The system will return to normal
operation again with the vehicle in motion.
To correct this condition the ambient temperature sensor should be relocated to the center support bar using the following procedure:
1.
Remove radiator grille.
2.
Remove ambient sensor and bracket.
3.
Remove ambient sensor from bracket and discard bracket.
4.
Remove "J" clip from ambient sensor attaching hole.
5.
Remove screw through the retaining tab on the P/S cooler line located on the center support.
6.
Attach the ambient sensor and the P/S cooler line bracket to the center support using the original bracket attaching screw (see Figure for location
and indexing of sensor).
7.
Route sensor wire along center support.
