Skyhawk L4-121 2.0L VIN P TBI (1984)
PROM - Programmable Read Only Memory: Recalls
Campaign - Cold Startability Adjustment
Bulletin
84-6E-30
Date Dec. 1984
Ref. No. 85-083-6E
SUBJECT:
SPECIAL POLICY: COLD STARTABILITY ADJUSTMENT
MODELS AFFECTED:
1983 AND 1984 SKYHAWKS EQUIPPED WITH 2.0L ENGINE (ENGINE VIN CODE P), AUTOMATIC
TRANSMISSION AND FEDERAL EMISSION SYSTEMS
Some 1983-1984 Buick Skyhawk models equipped with 2.0L engines (RPO LQ5) automatic transmission and Federal Emissions system may experience
no starts, poor cold start, and/or spark plug fouling. These starting conditions may be encountered at temperatures below -10~F (-23~ C).
SPECIAL POLICY ADJUSTMENT
There are no time nor mileage provisions relating to subject vehicles. This special policy adjustment offer will expire June 30, 1985.
A copy of this "Special Policy bulletin," should be filed in the 3-ring binder furnished to the dealer by General Motors in September 1982.
OWNER NOTIFICATION
Owners of vehicles registered in certain Northern states will be notified by letter of this special policy by Buick. However, all subject vehicles are
covered by this policy regardless of where they are registered or operated.
PARTS INFORMATION
The parts required to perform this Special Policy modification are to be ordered from GMWDD.
To ensure these parts are obtained as soon as possible, they should be ordered from GMWDD on a CIO Order with NO special instruction code, but
order on an advise code (2).
Description
Usage
Part Number
PROM
1983
1226823
PROM
1984 w/3.18 Axle
16047637
PROM
1984 w/3.43 Axle
16047649
Spark Bypass Relay Kit
1983-84
14086983
Spark Plugs
1983-84
5614009
Sun Visor Starting Label
1983-84
14085150
SERVICE PROCEDURE
The following procedure will provide a significant improvement in cold startability of these vehicles:
1.
Install a new calibration PROM per the following:
A.
On 1983 models use P/N 1226823, PROM.
INSTALL (NEXT TO PRODUCTION LABEL) SUPPLEMENTARY TUNE-UP LABEL PART NUMBER 14086563 FOUND IN PROM
PACKAGE.
B.
On 1984 models with base axle (3.18), use part number 16047637, PROM. (Refer to service parts Identification Label).
C.
On 1984 models with FW9 (3.43) axle, use part number 16047649, PROM. (Refer to service parts Identification Label).
2.
On 1983 models, set ignition timing to 6~ BTDC from 0~ TDC. On 1984 models, timing should be checked to assure 6~ BTDC.
THE TIMING CONNECTOR MAY BE LEFT DISCONNECTED FOR THE NEXT STEP.
3.
Install spark bypass relay kit, part number 14086983, (1983-1984). Detailed instructions are included in the kit package. Reconnect the timing
connector from Step 2.
4.
Remove and discard the fuse labeled "crank" from the fuse block #2 position (3 amp fuse) (1983-1984).
