Diesel Data: Automotive Repair

A/C - Cooling and Air Conditioning Performance

Bulletin 85-6B-2

Date Mar.. '85

Ref. No. 85-193-6B
SUBJECT: 2.5 LITER ENGINE COOLING AND AIR CONDITIONING PERFORMANCE

MODELS AFFECTED: 1985 REGAL SOMERSET


Some 1985 Regal Somerset models equipped with air conditioning and automatic transmissions may experience an overheated engine and/or reduced performance of the air conditioning system.

When a vehicle is operated at high ambient temperatures with the air conditioning turned on, and under the operating conditions listed below, the driver may experience engine overheating and/or reduced air conditioning
performance:

^ Driving up long, steep highway grades
^ Idling the engine
^ Driving in congested city traffic


A customer may comment of the following items if operated under the conditions listed above:

^ The coolant temperature light is on
^ A high reading is indicated on the coolant temperature gauge
^ Insufficient cool air from the air conditioner


These conditions may be the result of insufficient air flow through the radiator and condenser cores.

To repair this condition, the 100-watt engine cooling fan can be replaced with a 150-watt engine cooling fan motor #22040861. If fog lamps are later added as optional equipment, the 150-watt fan is required.

Production cars built after December, 1984 will be equipped with the higher capacity cooling fan.