F 150 4WD Pickup V8-5.4L CNG VIN M (2001)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine - Reduced Power/RPM Dip/Idle Surge
Article No.
01-24-3
12/10/01
DRIVEABILITY - BI-FUEL - REDUCED ENGINE
POWER, RPM DIP OR IDLE SURGE GREATER THAN
200 RPM IMMEDIATELY FOLLOWING TIP-IN FROM A
STOP - OPERATING IN ALTERNATIVE FUEL MODE -
VEHICLES EQUIPPED WITH 5.4L BI-FUEL ENGINE
ONLY
FORD:
2000-2001 F-150
This article is being republished in its entirety to update the Calibration Information Chart.
ISSUE
Some Bi-Fuel equipped vehicles may exhibit reduced engine power, RPM dip or idle surge greater than 200 RPM immediately following tip-in, from a
stopped position, using less than 1/4 throttle application, while operating on alternative fuel mode only. This may be caused by the calibration of the
Powertrain Control Module (PCM).
ACTION
Verify the condition. If normal diagnostics cannot pinpoint the condition, reprogram the PCM to the latest level calibration. Refer to the PCM
Calibration Information chart for details.
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
