Safari Van M V6-262 4.3L VIN Z TBI (1990)
Even with the brace kit installed, a number of other items might cause A/C related noises. To correctly diagnose the specific noise heard, use the "A/C
Noise Diagnostic Chart" on the following page.
Below is a list of possible groundout areas and torques to be checked:
1.
Compressor Suction and Discharge Hoses:
Suction hose or discharge muffler to compressor electrical connector Suction hose or discharge muffler to compressor body. Discharge hose to rear
wheel anti-lock (RWAL) unit. Discharge hose to brake booster vacuum lines. Condenser inlet pipe to radiator hose clamp. Suction hose to vacuum lines,
wire conduit or hood release cable. Suction hose to discharge muffler
2.
Liquid Lines:
Condenser outlet pipe to radiator inlet tank. Liquid line to radiator overflow nipple. Condenser out liquid line to radiator close out panel. Liquid line
"trombone loop" to evaporator case.
3.
C69 System:
Liquid line to C36 water pipes. Liquid line to any part of the body or frame. Liquid line to left hand rear spring hangar bracket. Suction jumper hose
to fuel line (left rear of engine). Rear EBA housing to outside sheet metal. Any underbody line to clamp without foam isolation between the line and
the clamp strap.
4.
Torques:
Aux. Evaporator Module
Attaching Bolts
2 in.lbs
Accessory Drive
Bracket
to Engine Block
26-40 N-m (19-30 ft.lbs)
Accessory Drive
Bracket
to Compressor
40-60 N-m (30-44 ft.lbs)
Pencil Braces
to Engine Block
26-40 N-m (19-30 ft.lbs)
Pencil Braces
to Compressor
20-34 N-m (15-25 ft.lbs)
TXV noise as described in the "Noise Diagnostic Flowchart" will not be improved significantly by adding additional insulation or isolation clips, well
nuts or rubber cushions than originally installed by the manufacturer. At this time, alternatives do not exist for improving this condition. TXV or
compressor replacement is NOT recommended.
The A/C compressor should NOT be replaced until after the above diagnostic and correction procedure is used and the noise has not been corrected.
WARRANTY INFORMATION For vehicles under warranty use:
