Crossed Oxygen Sensor Wires Can Cause Poor Idle Quality/Fuel Economy on Ford Aerostar
Problem overview
If you experience poor idle quality and fuel economy (and the Check Engine Light illuminates) after the exhaust system or motor has been removed and replaced, it could be that the oxygen sensor wires are crossed at the rear of the motor. Wiring schematics should be checked to ensure that the correct harness plug is connected to the corresponding sensor.
13 people reported this problem
1 commentFord Aerostar vehicles with this problem
8 model years affected
Average mileage: 121,000 miles
(121,000 - 121,000)
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