Firenza V6-173 2.8L (1986)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Cold Start Stall or Cold Driveaway Hesitation
SUBJECT:
ENGINE STALL AFTER COLD START AND COLD DRIVEAWAY HESITATION
MODELS/YEARS:
1986 FIRENZA MODELS WITH 2.8L MPFI
ENGINE AND 3-SPEED TRANSAXLE
NUMBER:
86-T-72
CORP. REF. NO.: 636529
DATE:
June 1988
SECTION:
6E3
Some 1986 Firenzas with 2.8L MPFI engines (VIN Code W) and 3-speed automatic transaxles may experience a cold start stall or a hesitation during a
cold driveaway.
To repair this condition, replace the PROM with one of the following service PROMs obtained from GMSPO.
Emission
Air
Old Service
New Service PROM
System
Conditioning
PROM Part Number
Part Number
Federal
Yes
1228118
16126446
Federal
No
1228119
16126447
Calif.
Yes
1228120
16126448
Calif.
No
1228121
16126450
NOTICE:
The above service PROMs are for Firenzas with a 2.8L Port Fuel Injected engine, and an automatic 3-speed transaxle.
Use applicable labor time and operation numbers.
