Engine - Oil Pan Buzz Noise

89chrysler10

Models

1987-88 C, G, H, J, K, L, N, P, & S Bodies With 2.2L And Some 2.5L Engines


Subject

Oil Pan Buzz Noise


Index

ENGINE


Date

May 22, 1989


No.

09-04-89

(C09-04-9)

P-1961

BODY CODE LEGEND

C - DYNASTY/NEW YORKER G - DAYTONA H - LANCER/LaBARON GTS J - LeBARON (COUPE AND CONVERTIBLE) K - RELIANT/ARIES/LeBARON (4-DOOR) TOWN & COUNTRY L - HORIZON/OMNI N - DAKOTA (4 X 2 AND 4 X 4) P - SHADOW/SUNDANCE S - MINI RAM VAN/VOYAGER/CARAVAN/GRAND CARAVAN/GRAND VOYAGER


SYMPTOMS/CONDITION


Some vehicles equipped with 2.2L and some 2.5L engines may exhibit a loud buzzing noise from the engine oil pan and oil filter area at off idle engine speeds during engine warm-up. The buzzing noise is caused by the engine oil pump relief valve "shuttling" during engine oil warm-up. The buzzing noise will stop on a fully warm engine.


DIAGNOSIS


Start engine and listen for buzz noise at engine oil filter area and oil pan. A vibration can also be felt in the sumped (deep) portion of the oil pan while the buzz noise is occurring.

The buzz noise is a customer annoyance and does not lead to any engine durability loss or failure.
PARTS REQUIRED

1 Plunger Kit PN 4504386
which includes:

1 Relief Valve Plunger PN 2463541
1 Cup Plug PN 2806273
1 Cotter Pin PN 108636


REPAIR PROCEDURE

Remove engine oil pan and oil pump. Install the oil pump relief valve plunger, cup plug and cotter pin per the 1988 Front Wheel Drive Car-Engine, Chassis and Body Service Manual (Publication Number 81-270-8002), Page 9-47, Figure 12.

NOTE: BE SURE TO REINSTALL THE RELIEF VALVE PLUNGER SPRING THAT WAS TAKEN OUT DURING DISASSEMBLY.


POLICY: Reimbursable within the provisions of the warranty.


TIME ALLOWANCE:
Labor Operation No. 09-65-01-90 . . . . . . . . . . 1.4 Hrs.


FAILURE CODE: 68 - Noisy






FRONT WHEEL DRIVE LABOR OPERATION TIME SCHEDULE






REAR WHEEL DRIVE LABOR OPERATION TIME SCHEDULE