Durango 4WD V8-5.9L VIN Z (1998)
Condenser Fan: All Technical Service Bulletins
A/C - Warm Air From Vents at Idle
NUMBER: 24-013-01
GROUP: Heating & A/C
DATE: September 28, 2001
SUBJECT:
Warm air blows from panel outlets with A/C on at idle.
OVERVIEW:
This bulletin involves installing an electric cooling fan kit.
MODELS:
1998 - 1999
(DN)
Durango
NOTE:
THIS BULLETIN APPLIES TO VEHICLES NOT EQUIPPED WITH DAYTIME RUNNING LAMPS.
SYMPTOM/CONDITION:
Some 1998 - 1999 (DN) Durangos may blow warm air out the instrument panel outlets while the A/C is ON in conditions of ambient temperatures
exceeding 30° C. (86° F.) and the vehicle not in motion. In conditions of "stop-and-go" traffic or while idling in high ambient temperatures, the A/C high
side pressures may exceed the high-pressure switch shut off of 450 - 490 psi. causing the A/C compressor to disengage. The compressor will re-engage
once the high side pressure drops below 270 - 330 psi. The root cause of the problem may be related to inadequate airflow through the A/C condenser in
high ambient temperatures while the vehicle is not in motion.
DIAGNOSIS:
NOTE:
THIS PROCEDURE WILL NOT CORRECT A CONDITION WHERE THE A/C COMPRESSOR DISENGAGES DUE TO EXCESSIVE HIGH
SIDE PRESSURE WHILE THE VEHICLE IS IN MOTION. NOR WILL THIS PROCEDURE CORRECT ANY A/C PERFORMANCE
COMPLAINT OTHER THAN THE LOSS OF A/C IN "STOP-AND-GO" TRAFFIC OR IDLE CONDITIONS WHILE IN HIGH AMBIENT
TEMPERATURES AND HUMIDITY.
Verify A/C system operation by performing an A/C Performance Test. Refer to the 1999 Durango Service Manual (Publication No. 81-370-9116), pages
24-13 through 24-16. If the vehicle passes the A/C performance test as identified in the 1999 Durango Service Manual, yet the customer complains that
warm air discharges out the panel ducts with the A/C ON with the vehicle NOT in motion, install the Electric Cooling Fan Kit. If the vehicle did not pass
the performance test, repair the vehicle as necessary. This procedure WILL NOT be able to correct the condition.
PARTS REQUIRED:
NOTE:
DUE TO THE ELECTRICAL LOAD REQUIREMENTS OF THE ELECTRIC COOLING FAN, THE 136 AMP GENERATOR IS REQUIRED
ON ALL VEHICLES. SOME 1999 MODELS MAY HAVE THE 136 AMP GENERATOR. 1999 MODELS EQUIPPED WITH TRAILER TOW
PACKAGE (SALES CODE AHC) ARE EQUIPPED WITH THE 136 AMP GENERATOR. TO ENSURE THAT 1999 MODELS ARE EQUIPPED
WITH THE 136 AMP GENERATOR, VERIFY THAT THE PART NUMBER ON THE GENERATOR IS 56028920AA. ALL MODELS NOT
EQUIPPED WITH THE 136 AMP GENERATOR MUST USE KIT 05019227AB.
REPAIR PROCEDURE:
Detailed instructions are included in the parts kit. Refer to the instructions for the Repair Procedure.
