Thunderbird V6-232 3.8L (1982)
Evaporator Case: All Technical Service Bulletins
A/C Evaporator - Cold Air Leaks/Cold Air Radiation
Article No. 86-4-6
HEATER/AIR CONDITIONING SYSTEM - COLD AIR LEAKS AND/OR COLD AIR RADIATION FROM EVAPORATOR ASSEMBLY
FORD 1982 FAIRMONT, GRANADA; 1982-85 MUSTANG, THUNDERBIRD; 1983-85 LTD
LINCOLN-MERCURY 1982 ZEPHYR; 1982-86 CAPRI, COUGAR; 1983-85 MARQUIS
Some passengers may experience discomfort while in the vehicle during cold weather because of cold air leaks and/or radiation to the cold evaporator
assembly. The probable cause of the air leaks is an inadequate seal at one or more of the following locations: (1) the recirc door, (2) the outside air inlet
gasket, and (3) the connection between the blower housing and evaporator case. Heat radiation, as a source of discomfort, is directly related to the
proximity of the cold evaporator assembly to the passenger's legs.
Service Procedure for Cold Air Leaks
1.
From the outside/recirc air door:
^
Remove the air inlet duct and blower housing assembly (19486) from the vehicle.
^
Separate the air inlet duct assembly (19A618) from the blower housing assembly (19930).
^
Remove the screw (42127) which attaches the outside-recirc door to its operating shaft (19A819); then remove and replace the door
(19A813).
2.
From the outside air inlet gasket:
^
Check the air inlet gasket (5401807) for any interference with cowl sound absorber or wiring harness which might deform the gasket and
allow cold air to be bypassed into the passenger compartment instead of through the duct.
^
Check for gasket damage.
^
Eliminate any parts interference which may exist.
^
Replace the gasket if damage to its sealing surface is found.
3.
From the mating surfaces between the blower housing assembly and evaporator case:
^
Check to determine whether cold air is escaping between the surfaces of the blower housing and evaporator case.
^
If a leak does exist, apply a silicone-based sealer between the adjacent surfaces on an as-required basis until the leak is corrected.
Service Procedure for Cold Air Radiation
A new air conditioner evaporator cover assembly (E5DZ-19C967-A) has been released for service to insulate that portion of the bottom surface of the
evaporator case which is causing the radiation of passenger warmth to the cold evaporator surface. The procedure for installing the cover is as follows:
^
Some vehicles are equipped with a modesty panel which is to be removed to provide access to the evaporator case.
^
Remove the lower attaching screw (42127) from the thermal limiter resistor assembly.
^
Remove the two screws (42134) which attach the air inlet duct assembly (19A618) to the A/C blower housing assembly (19930).
