LeSabre V6-181 3.0L (1986)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Poor Cold Driveability/Does Not Stay Running
Bulletin:
87-6E-20A
Date:
Oct., '87
Ref. No. 87-145A-6E
Corp. Ref. No. 706505R
SUBJECT:
POOR COLD DRIVEABILITY, ENGINE DOES NOT STAY RUNNING ON INITIAL COLD START, OR INTERMITTENTLY WILL
NOT STAY RUNNING ON DECEL
MODELS AFFECTED: SOME 1986 AND 1987 SOMERSETS AND SKYLARKS AND SOME 1986 LESABRES EQUIPPED WITH 3.0L MFI
ENGINES (VIN CODE L)
NOTICE:
This bulletin supersedes Bulletin 87-6E-20 dated July, 1987, due to a change in the 1986 LeSabre PROM calibration. Please discard
87-6E-20 and replace it with this revision which provides an updated service PROM part number.
Some 1986 and 1987 Somersets and Skylarks and some 1986 LeSabres equipped with a 3.0L MFI engine (VIN Code L) may experience one or more of
the following conditions:
^
Poor cold driveability (tip-in sags, hesitations, rough idle).
^
Will not stay running on the initial start when the engine is cold (with proper fuel pressure and no leak down).
^
Engine intermittently will not stay running on decel or during parking lot maneuvers, under closed throttle conditions.
If any of these conditions are experienced on a vehicle when the basic engine, controls and systems are performing properly, and cannot be repaired by
using currently published service and diagnostic procedures, it may be necessary to install a new Service PROM.
These PROM's are currently available through General Motors Service Parts Operation (GMSPO) under the following part numbers:
Axle Sales Code
Scanner PROM
Model
I.D. Located On
I.D. If This PROM
Service
Application
Axle
Deck Lid Decal
Is Installed
Part No.
1987 Somerset/Skylark
2.53
F16
1294
16081263
1987 Somerset/Skylark
2.84
F17
1304
16081268
1986 Somerset/Skylark
All
N/A
8590
1228590
1986 LeSabre
All
N/A
8724
16088725
