Town & Country Van V6-201 3.3L VIN R SMFI (1990)
Hose/Line HVAC: Customer Interest
Air Conditioning System - Moaning/Growling Noise
NO.: 24-04-90
GROUP:
HEATER & A/C
DATE:
Sept. 10, 1990
SUBJECT:
Air Conditioning
System Noise - 3.OL Engine
MODELS:
1989 Dodge Caravan, Grand Caravan, Caravan C/V, Plymouth Voyager, Grand Voyager, Chrysler Town & Country
SYMPTOM/CONDITION
Some vehicles equipped with the 3.OL engine may exhibit a moaning or growling noise when the air conditioning system is on. This noise is caused by
refrigerant gas pulsation being transmitted through the A/C discharge line. This noise is NOT the fault of the A/C compressor.
DIAGNOSIS
Verify that the vehicle has a moaning or growling noise when the air conditioning is on. Inspect the entire length of the discharge, suction and liquid lines
for grounding. These lines should not touch any sheet metal or underhood component. Also inspect these lines for grounding during engine roll and
where the lines go through the bulkhead. Inspect for proper foam or rubber isolation at all brackets and the radiator support and correct as necessary. If
the noise persists, proceed to the following repair procedure. Remember, the compressor should not be replaced unless it has failed the output test
outlined in TSB 24-03-89 Revision A or is making metallic noises. REPLACING THE COMPRESSOR FOR THE A/C DISCHARGE LINE NOISE
WILL NOT CORRECT THE PROBLEM.
PARTS REQUIRED
1
4419464
A/C Discharge Line Assembly
REPAIR PROCEDURE
This procedure involves inspection and replacement of the A/C discharge line assembly with a revised discharge line.
1.
Check to see if the A/C discharge line muffler is approximately two inches from the condenser. If so, remove the discharge line according to
the procedure outlined in the service manual.
A/C systerns should be evacuated using an approved recovery station.
2.
Install a new discharge line assembly (PN 4419464) that has a muffler located near the compressor attachment flange.
3.
Verify A/C operation.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
Labor Operation No.
24-45-25-91 . . . . . . . . . . . . . . . . 1.2 Hrs.
Replace A/C Discharge Line Assembly
24-01-10-01 . . . . . . . . . . . . . . . . 0.2 Hrs. Additional Time Required When R12 Recovery Station Is Used
FAILURE CODE:
68 - Noisy