Exhaust System - Noise/Vibration: Overview

NO: 11-02-98

GROUP: Exhaust

DATE: Feb. 6, 1998

SUBJECT:
Excessive Exhaust Noise/Vibration During/After Underbody Contact With Moisture

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 11-04-96 DATED JUNE 26, 1996 WHICH SHOULD BE NOTED IN THE 1996 TECHNICAL SERVICE BULLETIN MANUAL (PUBLICATION NUMBER 81-699-97010). A NEW HEAT SHIELD AND REPAIR PROCEDURE ARE PROVIDED IF ALIGNMENT CANNOT BE ACCOMPLISHED. ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS**.

MODELS:

1995 - 1996 (PL) Neon

SYMPTOM/CONDITION:

Excessive exhaust noise and/or vehicle vibration during/after vehicle is driven through puddles or underbody contact with snow/slush. The intermediate pipe may be contacting the tunnel heat shield when it is cooled from the water/snow contact.

CAUTION:
TO PREVENT SERIOUS INJURY FROM HOT EXHAUST COMPONENTS, ENSURE THAT THE VEHICLE HAS NOT BEEN DRIVEN AND THE EXHAUST IS COLD BEFORE INSPECTION AND REPAIR.

DIAGNOSIS:

With the vehicle on a suitable hoist, inspect the tunnel heat shield for any marks where the intermediate pipe has made contact. If the pipe or heat shield show signs of contact, or the pipe appears to be out of alignment with the tunnel, proceed to the repair procedure.

PARTS REQUIRED:

AR 04495951 Isolator, Exhaust Rubber
**AR 05278028AB Heat Shield**

POLICY: Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:

Labor Operation No: 11-50-05-95 0.3 Hrs.
Exhaust, Re-align and Replace Isolator if Required

11-50-05-96 0.3 Hrs.
Exhaust, Re-align and Replace Isolator
and Heat Shield

FAILURE CODE: XX - Service Adjustment