Firenza L4-121 2.0L VIN K TBI (1987)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Failure to Run When Cold/Hesitation
SUBJECT:
FAILURE TO RUN COLD OR HESITATION (NEW PROM MAY CORRECT); COLD START
ROUGHNESS/FAILURE TO RUN AFTER COLD START (DROP-IN MANIFOLD DEFL. PLATE)
MODELS/YEARS:
1987-88 FIRENZA WITH 2.0L (VIN 1) ENGINE
NUMBER:
88-T-138A
CORP. REF. NO.: 936502, 836636
DATE:
August 1989
SECTION:
6E
This bulletin cancels and supersedes Dealer Technical Bulletin 88-T-138, date 4/89, which may be discarded. This bulletin has been reissued to clarify
transaxle usage.
1988 ABOVE 32~F WITH THM 125C TRANSAXLE ONLY
Customer comments of cold driveability roughness, hesitation or failure to run after a cold start and driveaway maneuver may be repaired with the
installation of a new cal PROM, listed below:
USAGE
PROM P/N
BROADCAST CODE
SCANNER I.D.
1988 J (50 State)
16136810
ARRJ
6821
Parts are currently available from GMSPO.
WARRANTY INFORMATION Labor Operation Number. J6364
Labor Time:
.4 Hours
1987-88 BELOW 32~F WITH THM 125C OR 5 SPEED MANUAL TRANSAXLE
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 currently available form GMSPO.
After installation of this kit check the transmission throttle valve cable (Service Manual Section 7A1) and the cruise control cable (Section 9B) 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 Hours
Trouble Code:
92
