Regal V6-173 2.8L (1988)
A/C Pressure Sensor/Switch - Cooling Fan: Customer Interest
A/C - Performance In High Ambient Temp & Humidity
Bulletin:
88-1-19
Date:
Nov '88
Ref.No.:
88-238-1
Corp. Ref. No.: 831213
SUBJECT:
REDUCED A/C PERFORMANCE IN HIGH AMBIENT TEMPERATURES AND HUMIDITY
MODELS AFFECTED: 1988 REGALS
The following are conditions that have been identified as the probable causes and their solutions in addressing customer comments of reduced A/C
performance on all 1988 Regals with single cooling fan.
FIGURE 1
Reduced A/C Performance At Idle Or Low Speeds In City Traffic
This condition may be caused by reduced air flow across the condenser due to the cooling fan not being on all the time. This can be addressed by
disconnecting the electrical connector to the cooling fan intermediate pressure switch. This switch is located in the high pressure line from evaporator to
condenser, as shown in Figure 1. Tape the connector back on the harness making sure that the tape seals the opening of the connector. DO NOT
REMOVE OR REPLACE THE SWITCH. Disconnecting this switch will allow the cooling fan to run all the time when the A/C is on and improve the
air flow across the condenser.
WARRANTY INFORMATION
Labor Operation Number:
D1130
Labor Time:
.2 Hours
Trouble Code:
92
Overcharged A/C System
Refrigerant overcharge can be a contributing factor to the reduced performance of the A/C system. This however, should be verified by doing an A/C
Performance Check, Bulletin 88-1-18.
If the A/C temperature and pressure reading are not within the upper limits shown on the Performance Chart, the system refrigerant charge should be
suspect.
Discharge, evacuate and refill the system with 2.25 lbs. of refrigerant, per the label on the left front shock tower.
The A/C system should then be rechecked for performance.
WARRANTY INFORMATION
