Fulltext TSBs

Technical Service Bulletins

TSB
01-15-5
  • DRIVEABILITY – BI-FUEL VEHICLES ONLY – NO START – GASOLINE OR ALT FUEL MODE – VEHICLES EQUIPPED WITH 5.4L OR 6.8L BI-FUEL ENGINE ONLY
Publication Date: JULY 24, 2001

FORD:
1999-2001 F-150, SUPER DUTY F SERIES

ISSUE:

Some Bi-Fuel vehicles may exhibit a no start condition in both the gasoline mode and the alt fuel mode (LPG & CNG). This may be caused by the Crankshaft Position Sensor (CKP) circuit.

ACTION:

Check CKP (Crankshaft Position) circuit. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1999 Bi-Fuel Vehicles:

  1. With the alt fuel selector switch in the GAS position, disconnect the Clean Tach Output (CTO) module connector C4044 (labeled J44 and located near the battery) and start the vehicle in the gasoline mode.
  2. If the vehicle starts in the gasoline mode, refer to the PC/ED Section 5, pinpoint test JH1. Reconnect all connectors when complete.

    NOTE:IF THE VEHICLE DOES NOT START IN THE GASOLINE MODE, RECONNECT C4044 (LABELED J44) AND REFER TO THE BASE VEHICLE POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS MANUAL FOR NO START – NORMAL CRANK.

2000/2001 Bi-Fuel Vehicles:

  1. With the alt fuel selector switch in the GAS position, disconnect the compuvalve connector C4036 (labeled J36/P36) and start the vehicle in the gasoline mode.
  2. If the vehicle starts in the gasoline mode, disconnect C4026 (labeled J26/P26) and refer to the PC/ED Section 5, pinpoint test AD5. Reconnect all connectors when complete.

    NOTE:IF THE VEHICLE DOES NOT START IN THE GASOLINE MODE, RECONNECT C4036 (LABELED J36/P36) AND REFER TO THE BASE VEHICLE POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS MANUAL FOR NO START – NORMAL CRANK.

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Information Only

OASIS CODES:

601300, 602300, 603300


Copyright © 2001 Ford Motor Company