Skyhawk L4-121 2.0L Turbo VIN M FI (1987)
PROM - Programmable Read Only Memory: Customer Interest
Fuel - Cold Roughness, Hesitation or Failure to Run
Bulletin:
89-6E-26
Date:
Mar. '90
Ref. No.: 89-277-6E
Corp. Ref. No.: 836536R
SUBJECT:
COLD START ROUGHNESS/FAILURE TO RUN AFTER COLD START (DROP-IN MANIFOLD DEFLECTOR PLATE)
MODELS AFFECTED: 1987-1988-1989 SKYHAWKS WITH 2.0L ENGINES (VIN CODE 1)
This bulletin supersedes Buick Dealer Service Bulletin 88-6E-24 (Corporation Number 836536) which should be discarded. The 1989 Models have been
added as well as the Notice.
Customer comments of cold driveaway roughness, hesitation or failure to run after a cold start and idle may be addressed with a drop in the manifold
deflector plate, service kit, P/N 10112342. This deflector prevents liquid fuel from collecting in the manifold's EGR passage which is then ingested into
the engine at initial driveaway. Depending on ambient temperature, the engine needs to idle longer than one minute for this condition to occur.
Parts are available from GMSPO.
NOTICE
For 1988-89 Skyhawks, this Drop-in Manifold Deflector Plate should be used in addition to new PROMS listed in Buick Dealer Service Bulletin
89-6E-4.
After installation of this kit check the transmission throttle valve cable (Service Manual Section 7A1) and the cruise control cable (Section 9C) for
proper adjustment.
If the subject conditions still continue, refer to the Service Manual, Sections 6E2-A and B for further information.
WARRANTY INFORMATION
Labor Operation Number:
T1381
Labor Time:
.7 hr.
Trouble Code:
92
