Daytona Shelby Z L4-135 2.2L SOHC Turbo VIN E FI (1988)
Oil Pan: Customer Interest
Engine - Oil Pan Buzz Noise
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.
