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1998 Ford F-150 XL 4.2L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Posted to Ford Driveability on 2/5/2018 20 Replies

Hi Techs, This F-150 98 with 137K miles is running crazy rich. As listed above STFT1 and STFT2 are pegged at -20% @ idle and @ 3K rpms. F/P is good ([...] running). Modis reads no Faults on any injectors. Fuel pulse width is .01 (but not absolutely sure on...

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  Related Documents & Media  1998 Ford F-150 XL

 
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car Vehicle Data

1998 Ford F-150 XL

VIN 1FTZX1723W
Engine4.2 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways, Under Load, Idle

Trouble Codes

P0102Mass Airflow Sensor Circuit Low Voltage
P1507Crankcase Filter Restriction
Message Closed

car Vehicle Data

1998 Ford F-150 XL

VIN 1FTZX1723W
Engine4.2 L / 6 cyl / GAS
Trans5-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways, Under Load, Idle

Trouble Codes

P0102Mass Airflow Sensor Circuit Low Voltage
P1507Crankcase Filter Restriction