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1989 Ford E-Series Van Repair Question


Topics covered: Air filter, Sensor, Air filter housing.
Mileage: 136,000 miles.

Asked on December 16, 2012

Ford E-Series Van Air filter Problem

How to find problem with code 54 1989 e150/4.9 engine iat/act/vat it is not in the air intake system that i can find i know its not vat .there are no other wires going to intake other then throttle position sensor/idle air control valve no wires to air filter housing so please dont tell me its in the snorkel going to the air filter
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Answer

Replied on December 16, 2012

simply put, make sure the air charge sensor in air filter housing is hooked up. make sure the connector is good. make sure there are no broken wires.

other than that, replace the sensor

Roy

Tiny Answered by ASEMaster6371 (expert)
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