F 150 Super Crew 2WD V8-5.4L SOHC VIN L (2001)
PROM - Programmable Read Only Memory: Customer Interest
Engine - Lacks Power in High Temperatures
Article No.
02-12-3
06/24/02
^
DRIVEABILITY - ENGINE LACKS POWER WHEN
OPERATING IN HIGH AMBIENT TEMPERATURES
ABOVE 38C (100F) - VEHICLES EQUIPPED WITH
5.4L ENGINE ONLY
^
ENGINE - 5.4L - ENGINE LACKS POWER WHEN
OPERATING IN HIGH AMBIENT TEMPERATURES
ABOVE 38C (100F)
FORD:
2000-2002 EXPEDITION, F-150
ISSUE
Some vehicles equipped with the 5.4L-2V engine may exhibit a lack of power condition when operating in ambient temperatures above 38°C (100 °F).
This may be caused by the Powertrain Control Module (PCM) calibration which retards the ignition timing to prevent detonation when the Inlet Air
Temperature (IAT) reaches 60°C (140 °F) or above. This may be more pronounced during stop-and-go driving.
ACTION
Verify the condition. Reprogram the PCM with the latest calibration and on 2000 and 2001 F-150's, install body plugs behind Coolant Overflow Bottle if
missing. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
