Cutlass Supreme FWD V6-189 3.1L (1989)
Idle/Throttle Speed Control Unit: All Technical Service Bulletins
Engine Controls - Hard, False or No Start Condition
NUMBER:
89-T-136
CORP.REF.NO:
936522A
DATE:
October 1989
SECTION:
6E
SUBJECT:
HARD STARTING, FALSE STARTING OR NO START CONDITION (DIAGNOSTIC PROCEDURE)
MODELS/YEARS:
1989 CUTLASS SUPREME WITH 2.8L/3.IL AND 1989 CUTLASS CIERA WITH 2.8L
Customers may comment of a hard starting, false starting, or a no start condition with vehicles having the above engine and model year combinations.
This condition may also be described as a stall after start. Vehicles that display these conditions may have a Idle Air Control (IAC) valve pintle that
moves when the engine is off.
If the subject condition is described by the customer, then complete the following:
1 .
Perform diagnostics, per Section 6E of the Service Manual. Replace any defective parts.
2.
Make certain that all other bulletins for starting conditions have been considered and that the latest MEMCAL is installed in the vehicle. (89-T-49,
89-T-121)
3.
If no problems were found using normal diagnostics, the latest MEMCAL is installed in the vehicle, and the condition still persists, then replace
the Idle Air Control (IAC) valve with a new P/N 17112351.
Parts are currently available through GMSPO.
WARRANTY INFORMATION:
Labor Operation Number:
J5542