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2001 Ford F-150 King Ranch 4.6L Excessive Emissions, MIL Lamp on
Posted to Ford Driveability on 9/20/2007 16 Replies

This seemed to be easy but I have not fixed the P0401. The first test was to put a vacuum pump on the egr valve and apply vacuum, the engine does not die. The idle is a little lower. So it has a flow problem. I removed the EGR valve, tested ok, cleaned it. It ...

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Message Closed w/FIX

car Vehicle Data

2001 Ford F-150 King Ranch

VIN 1FTRW07W71
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursUnder Load

Trouble Codes

P0401EGR System Insufficient Flow Detected
P1408MAP Sensor Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

2001 Ford F-150 King Ranch

VIN 1FTRW07W71
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursUnder Load

Trouble Codes

P0401EGR System Insufficient Flow Detected
P1408MAP Sensor Circuit Malfunction