Celebrity V6-173 2.8L (1989)
Idle Up Control Valve: All Technical Service Bulletins
Engine Controls - Hard Start, False Start, or No Start
Number:
90-62-6E
Section:
6E
Date:
October 1989
Corporate Bulletin No.: 936522
Subject:
HARD STARTING, FALSE STARTING, OR NO START CONDITION
Model and Year:
1989 A, J, L CARS WITH 2.8L (VIN CODE W, S) ENGINES 1990 W CAR WITH 3.1L (VIN CODE T) ENGINES
TO:
ALL CHEVROLET DEALERS
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 an 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.
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 from GMSPO.
Use applicable labor operations and times.
