Engine - Stalls on Drive/Reverse Engagement
88olds12SUBJECT SERVICE AND PARTS INFORMATION ON A NEW TCC SOLENOID; ENGINE STALLS WHILE SHIFTING INTO REVERSE OR DRIVE SUSPECT [1][2]TORQUE CONVERTER CLUTCH (TCC SOLENOID)
ALL 1981-87 GAS MODELS AND 1982-85
MODELS/YEARS MODELS WITH A 4.3L DIESEL ENGINE
EQUIPPED A THM 125C
NUMBER: 87-T-57B
CORP. REF. NO: 777126R
DATE: July 1988
SECTION: 7A
This bulletin replaces Dealer Technical Bulletin 87-T-57A which can be discarded. This bulletin is being revised to include 1982-85 models with the 4.3L diesel engine and the solenoid and conduit assembly part numbers for models equipped with the 4.3L engine.
FIGURE 1 - NEW DESIGN SOLENOID:
BULLETIN COVERS: (Figure 1)
A new torque converter clutch (TCC) solenoid, which has an internal rubber seal that will prevent sediment from sticking to the electromagnetic portion of the solenoid, is in production in all 1987 THM 125C models built after Julian date 160. The new solenoid will reduce the potential of TCC Solenoid sticking and the resulting condition of the engine stalling while shifting into reverse or drive.
FIGURE 2 - THM 125/125C TRANSAXLE IDENTIFICATION INFORMATION:
DATE OF PRODUCTION CHANGE: (Figure 2)
Beginning June 9, 1987 (Julian date 160), all 1987 THM 125C Transaxles were produced with the new solenoid.
IMPORTANT: Some Cutlass Ciera models equipped with Windsor transaxles built between February 15th and February 25th, 1987 (Julian dates 049 - 056) may have suspect torque converter clutch (TCC) solenoids. The suspect previously equipped solenoids, may stay applied after transaxle has been operated at normal operating temperature. This condition could result in engine stall while engaging reverse or drive range.
FIGURE 3 - REMOVING SOLENOID:
SERVICE ACTION: (Figure 3)
The new solenoid can be used to service all past THM 125C transaxle models. Remove the side cover and replace the solenoid and conduit assembly (on-car service).
SERVICE PARTS INFORMATION:
8665016 Solenoid and Conduit Assembly - 1988 KDC Model Only
8652379 Solenoid and Conduit Assembly - All Other Models
Cars equipped with the 4.3L diesel engine should use the following parts:
8652377 Solenoid and Conduit Assembly - 1982-84 Models
8652376 Solenoid and Conduit Assembly - 1985 Models
SERVICE NOTES:
To properly diagnose the condition of the suspect Windsor built transaxles, assure that stabilized operating temperatures are obtained during normal road evaluation phase of routine preliminary predelivery procedure.