PCM - Engine Spark Knock on Heavy Acceleration

Article No.
01-12-3

06/25/01

^ DRIVEABILITY - DETONATION OR SPARK KNOCK
ON HEAVY ACCELERATION - MUSTANG BULLITT
GT VEHICLES ONLY

^ ENGINE - 4.6L 2 VALVE - DETONATION OR SPARK
KNOCK ON HEAVY ACCELERATION - MUSTANG
BULLITT GT VEHICLES ONLY

FORD:
2001 MUSTANG

ISSUE
Some Mustang Bullitt GT vehicles may exhibit a detonation (spark knock) on heavy acceleration that can occur at any RPM. This may be caused by the calibration of the Powertrain Control Module (PCM).





ACTION
Verify condition. It normal diagnostics cannot pinpoint the condition, Reprogram the PCM to latest level calibration. Refer to the following PCM Calibration Information chart.

SERVICE INFORMATION





Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25/pkg) and list the date, dealer number, and summary of modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 615000 615500