Engine - Poor Performance/No Start When Cold
No.09-02-84
P-789
Date
February 27, 1984
Index
ENGINE
Subject
Timing Belt Tooth Skipping Due to Snow Intrusion Into The Timing Cover
Models
All 1981-1983 Front Wheel Drive Cars & Trucks Equipped With 2.2L Engine W/O Air Conditioning
SYMPTOM/CONDITION
Poor engine performance or no start during cold weather operation due to timing belt tooth skipping on vehicles without air conditioning.
DIAGNOSIS
Timing belt tooth skipping on the subject vehicles may be caused by snow and/or ice being ingested into the timing belt area. This condition is rare, but may happen when operating in very deep snow or during blizzard conditions.
The condition may not become apparent until the vehicle has been sitting in ambient temperatures below freezing for several hours, allowing melted snow or ice to refreeze in the timing belt area. When the vehicle is then started, the ice can cause the belt to skip one or more teeth.
A Timing Cover Sealing Package, PN 4293186, has been developed to correct this condition.
PARTS REQUIRED
1 - Sealing Package PN 4293186
REPAIR PROCEDURE
1. Check camshaft timing as follows:
Engine Will Not Start
A. Remove access plug from timing belt cover. Turn engine to # 1 cylinder top dead center (use timing marks for reference).
B. Looking through the access hole in the timing cover, check the location of the timing hole (if visible) in the camshaft sprocket. If the hole is centered with the access hole in the cover the camshaft is timed properly.
NOTE:
THE HOLE WILL NOT BE VISIBLE IF THE CAMSHAFT SPROCKET IS MORE THAN TWO NOTCHES OUT OF TIME.
C. If the camshaft timing is wrong, retime as per service manual procedures.
D. If the engine will not start, the intermediate shaft could have skipped a tooth.
E. Verify this condition by turning the engine to # 1 cylinder T.D.C. Remove the distributor cap and check the position of the rotor. If rotor is out of the # 1 cylinder firing position, it will be necessary to correct the intermediate shaft timing. Refer to the service manual for intermediate shaft timing procedures.
2. When camshaft and intermediate shaft timing has been verified, install the parts in Kit PN 4293186 as follows:
A. Remove existing timing belt cover.
B. Remove styrofoam block from the engine support bracket and install the revised closure (Figure 1).
C. Remove the cap from the existing upper timing belt cover and install in the revised cover (Figure 2).
NOTE:
IF THE CAP PLUGS ARE MISSING FROM THE UPPER OR LOWER COVERS, INSTALL NEW ONES. THE PLUGS ARE REQUIRED FOR PROTECTION OF INTRUSION OF FOREIGN MATTER IN THE TIMING BELT. INSTALL THE REVISED UPPER TIMING COVER.
D. Install cylinder block-to-water pump closure between the water pump housing and block as shown in Figure 3.
E. Clean head surface adjacent to the timing belt cover above the water pump. Remove the tape from the adhesive-backed cylinder head-to-timing belt cover closure. Install as shown in Figure 4 with adhesive side against the head.
POLICY: Reimbursable within the provision of the warranty
TIME ALLOWANCE:
Labor Operation No. 09-10-10-17 0.2 Hrs.
Case/Cover Timing Belt - Replace (Only)
09-10-02-90 0.7 Hrs.
Adjust Belt Timing and Replace Cover
FAILURE CODE: 41 - Foreign Material