Mustang Cobra V8-4.6L DOHC VIN V (2000)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
PCM - Hesitation Backfires When Cold
Article No.
01-1-9
01/22/01
DRIVEABILITY - HESITATION WHEN COLD - WITH NO
DIAGNOSTIC TROUBLE CODES (DTC) PRESENT -
VEHICLES EQUIPPED WITH 4.6L ENGINE AND
MANUAL TRANSMISSION
FORD:
1999-2000 MUSTANG
ISSUE
Some vehicles may exhibit a hesitation and in some cases engine backfiring through the induction system on cold starts (27°C/80°F and colder) with no
diagnostic trouble codes (DTC) present. The hesitation is exhibited on a low speed, high load condition. This may be caused by the calibration of the
Powertrain Control Module (PCM).
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.
ACTION
If condition is verified and normal diagnosis cannot pinpoint condition, reprogram the PCM to the latest level calibration. Refer to the PCM Calibration
Information Chart as shown. Refer to the appropriate year Mustang Workshop Manual for reprogramming procedures.
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY
