Skyhawk L4-121 2.0L VIN K TBI (1987)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Spark Knock or Detonation Noise
Bulletin:
87-6E-25
Date:
Feb. '88
Ref. No.:
87-219-6E
Corp. Ref. No.: 736528
SUBJECT:
SPARK KNOCK OR DETONATION NOISE
MODELS AFFECTED: 1987 SKYHAWKS WITH THE 2.0L OHC TURBO ENGINE (VIN CODE M) AND AUTOMATIC TRANSAXLE
Improvements made in the 1988 L-4 turbo electronic spark control (ESC) calibration are being made available to the 1987 L-4 turbo package.
Owner comments of a warmed-up spark knock or detonation noise are repaired with the following "more responsive ESC" PROM calibration:
Transaxle
PROM Part Number
Automatic
16084410
For other ignition related conditions, refer to Service Manual Section 6D4 or 6E.
WARRANTY INFORMATION
Use applicable Labor Time and Operation Number.