Injection Pump Lever Sensor - Specifications Revision

89Ford27

ENGINE EMISSIONS DIAGNOSIS MANUAL, VOLUME H-1989-PAGE 20-57-FUEL INJECTION PUMP LEVER (FIPL) SENSOR SPECIFICATIONS REVISED-DIESEL ENGINES ONLY
Article No. 89-18A-12
LIGHT TRUCK: 1989 E-250, E-350, F-250, F-350
ISSUE: Page 20-57 of the 1989 Engine Emissions Diagnosis Manual, Volume H, has been revised to provided added specifications on the Fuel Injection Pump Lever (FIPL) sensor, for Diesel engines only.
ACTION: Refer to the page following this TSB article for the revised specifications.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 4800

Diesel Diagnostics - 7.3L Engine 1989 20-57


Fuel Injection Pump Lever (FIPL) Sensor


The Fuel Injection Pump Lever (FIPL) sensor is used on E-250, E-350, F-250, F-350, and FSuper Duty vehicles equipped with a 7.3L Diesel engine and an E40D automatic transmission. The FIPL sensor is bolted to the fuel injection pump and is actuated by the throttle lever.

The FIPL sensor is incorporated to provide an electrical signal, which is proportional to the amount of fuel being delivered, as an input to the Transmission Electronic Control (TEC) Processor. Based on this information, the TEC Processor provides the proper shift scheduling and torque capacity.

Should a malfunction occur in the FIPL sensor circuit, the electrical signal sent to the TEC Processor will be recognized as erroneous. When this out-of-specification signal is detected, the TEC Processor will provide a high capacity operating mode that protects the transmission from potential damage. This operating mode includes: maximum TV pressure, resulting in harsh upshifts and engagements; and a singular shift schedule regardless of accelerator pedal position, resulting in the 1-2, 2-3, and 3-4 shifts occuring at a speed commensurate with a heavy (but not Wide Open) throttle setting.

Should harsh or poorly scheduled shifts be encountered, perform Key-On-Engine-Off Self-Test to determine the appropriate repair to be performed and correct as necessary before proceeding. Should it be necessary to service the FIPL sensor, refer to the "DIAGNOSIS, TESTING, AND ADJUSTMENT - FIPL SENSOR" section.