E 350 Van V8-460 7.5L VIN L 4-BBL (1987)
Engine Control Module: Customer Interest
Engine - Lack of Power and/or No Start Condition
Article No.
95-7-11
04/10/95
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LACK OF POWER - VEHICLES WITH 7.5L ENGINE AND CATALYTIC CONVERTER
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NO START - VEHICLES WITH 7.5L ENGINE AND CATALYTIC CONVERTER
LIGHT TRUCK:
1988-93 ECONOLINE, F-25O, F-350
CALIBRATION:
8-97A-R02, 8-97A-R10, 8-98A-R02, 8-98A-R10, 0-97A-R05, 0-97A-R10, 0-98F-R05, 0-98F-R10, 1-97A-R00, 1-98F-R00, 1-98C-R00, 0-98C-R00,
9-98A-R00, 0-98E-R05, 0-98E-R10, 0-98A-R05, 0-98A-R10, 1-98A-R00, 1-98E-R00, 2-98E-R00, 2-98E-R10, 2-98A-R10
WARNING:
THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE. PERFORMING THIS MODIFICATION ON OTHER ENGINE
CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.
This TSB does not include the F-47/53 Series, over 14,000 lb GVW being covered by Owner Notification Program 94B37.
ISSUE:
Some vehicles may exhibit a lack of power or a no start condition. This condition may be diagnosed as an exhaust restriction caused by a plugged
catalytic converter and/or muffler. Idle quality may be poor during both cold and warm engine temperatures.
ACTION:
Determine if the catalyst is plugged and replace as necessary. Replace the Powertrain Control Module (PCM) with a new PCM which has a new
operating strategy, the Idle Speed Control (ISO) Actuator and the Expansion Chamber. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
