Muffler - Whistle Noise on Acceleration

NO: 11-05-98

GROUP: Exhaust

DATE: Apr. 10, 1998

SUBJECT:
Whistle Noise During Acceleration

MODELS:

1998 (NS) Town & Country/Caravan/Voyager

NOTE:
THIS BULLETIN APPLIES TO LONG WHEEL BASE (LWB) VEHICLES EQUIPPED WITH A 3.0L, 3.3L OR 3.8L ENGINE AND SHORT WHEEL BASE (SWB) VEHICLES EQUIPPED WITH A 3.3L CALIFORNIA EMISSIONS (SALES CODE EGA/NAE) OR 3.8L CALIFORNIA EMISSIONS (SALES CODE EGH/NAE) ENGINE.

SYMPTOM/CONDITION:

Some vehicles may produce a high pitched whistle noise during Wide Open Throttle (WOT) acceleration with engine speeds above 2500 RPM.

DIAGNOSIS:

Drive the vehicle until reaching normal operating temperature. With all accessories turned off, listen for a high pitched whistle noise while accelerating at WOT with engine speeds above 2500 RPM. If a whistle noise is heard, check the air cleaner box cover for complete sealing. If no air cleaner box cover leaks are found, perform the Repair Procedure.

PARTS REQUIRED:

AR (1) 04809149 Muffler, 3.0L LWB
AR (1) 04809151 Muffler, 3.3L & 3.8L LWB
AR (1) 04809152 Muffler, 3.3L & 3.8L SWB (Sales Code NAE)

REPAIR PROCEDURE:

This bulletin involves replacing the muffler.

1. Using the procedure outlined on page 11-4 of the 1998 Town & Country, Caravan and Voyager service manual (Publication No. 81-370-8105) replace the muffler.

POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:

Labor Operation No: 11-30-01-93 0.4 Hrs.

FAILURE CODE: P8 - New Part