EXPERTEC TSB (476503)
Publication date: 1994-01-24Reference number: 476503
EXPERTEC TSB
TECHNICAL SERVICE BULLETIN
Reference Number(s): 476503, Date of Issue:
01/24/94
HARD START ON HOT RESTART/ - INCREASED IDLE SPEED
Model(s): 1990-91 Chevrolet Corvette with 5.7L Engine (VIN J - RPO LT5) and Manual 6-Speed Transmission (ML9)
Bulletin No.: Chevrolet 476503
Date: 01/24/1994
CONDITION
SOME OWNERS OF 1990 CORVETTES MAY COMMENT ON IDLE FLUCTUATION, INCREASE IN IDLE SPEED AFTER A HOT RESTART, AND AN INCREASE IN ENGINE SPEED DURING A VEHICLE COAST TO STOP WITH CLUTCH DEPRESSED.
SOME OWNERS OF 1991 CORVETTES MAY COMMENT ON A HARD STARTING CONDITION DURING A HOT RESTART.
CORRECTION
THE CALIBRATIONS HAVE BEEN REFINED TO ADDRESS THESE CONCERNS. REPLACE THE MEM-CAL WITH THE DESIRED UNIT FROM THE CHARTS BELOW.
PARTS INFORMATION
PARTS INFORMATION
| Model Year | Broadcast Code | Scanner I.D. | Part Number | Body Style | Axle |
|---|---|---|---|---|---|
| 1990 | AYBK | 3921 | 16163905 | COUPE | 3.45 |
| 1991 | BFXB | 3431 | 16193416 | COUPE | 3.45 |
PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.
WARRANTY INFORMATION
LABOR OPERATION: T0500
LABOR TIME: 0.5 HOUR
FIGURES: 0