Cooling Fan - Sound/Vibration
NUMBER: 07-003-02GROUP: Cooling
DATE: March 11, 2002
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 07-007-01, DATED December 14, 2001, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS BULLETIN IS BEING UPDATED TO CORRECT THE ELECTRONIC RETRIEVAL FEATURE ON MDS2. NO CHANGE HAS BEEN MADE TO THE TEXT OR CONTENT OF THE BULLETIN AND NO **ASTERISKS** ARE USED.
SUBJECT:
Cooling Fan Sound/Vibration
OVERVIEW:
This bulletin involves installing two stabilizer rods to the cooling fan shrouds.
MODELS:
2001 - 2002 (RS) Town & Country/Caravan/Voyager
2001 - 2002 (RG) Chrysler Voyager (International Markets)
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH GAS ENGINES.
SYMPTOM/CONDITION:
At idle, with the cooling fans on, a sound may be heard and/or a vibration may be felt inside the vehicle. The vibration may be felt in the steering wheel/column, seat, floor, or instrument panel.
DIAGNOSIS:
With the vehicle at normal operating temperature, apply the brake and place the transmission into gear. Turn on the A/C and wait until the cooling fans activate, and then turn off the A/C and wait for the cooling fans to stop. If a sound is heard or a vibration is felt inside the vehicle while the cooling fans operate, and the sound or vibration goes away when the cooling fans turn off, perform the Repair Procedure.
PARTS REQUIRED
EQUIPMENT REQUIRED
REPAIR PROCEDURE:
WARNING:
THIS REPAIR INVOLVES WORK NEAR THE EXHAUST MANIFOLD. TO PREVENT PERSONAL INJURY, ALLOW THE EXHAUST SYSTEM TO COOL BEFORE PERFORMING THIS REPAIR.
NOTE:
THIS REPAIR MAY NOT ELIMINATE ALL SOUNDS OR VIBRATIONS EXPERIENCED AT IDLE. THIS WILL NOT ELIMINATE THE SOUNDS AND VIBRATION THAT MAY BE GENERATED FROM THE A/C COMPRESSOR CYCLING ON AND OFF.
1. With the ignition in the OFF position, open and support the hood.
2. Position the shorter stabilizer rod to the two open holes located at the bottom of both fan shrouds as shown in (Fig. 1). Ensure that the flat part of the stabilizer rod eyelets are contacting the shrouds (Fig. 2).
NOTE:
INSTALLING THE STABILIZER BARS BACKWARDS MAY CAUSE THE COOLING FANS TO BIND AGAINST THE SHROUDS AND MAY CAUSE THE ENGINE TO OVERHEAT.
3. Install a T25 torx screw to each end of the support rod but do not fully tighten.
4. Position the longer support rod to the two open holes located at the top of both fan shrouds as shown in (Fig. 1).
5. Install a T25 torx screw to each end of the support rod but do not fully tighten.
NOTE:
IT IS CRITICAL TO APPLY THE CORRECT TORQUE TO EACH SCREW. OVER OR UNDER TORQUING MAY CAUSE THE METAL SCREWS TO BECOME LOOSE OR FALL OUT OF THE PLASTIC FAN SHROUDS.
6. Using a click type torque wrench, tighten each torx screw to 8 N.m (70 in. lbs.).
7. Start vehicle and turn on A/C. Wait for cooling fan motors to engage and ensure proper operation of the cooling fans.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE
FAILURE CODE