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2003 Ford F-150 XL 4.2L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to Ford Driveability on 6/2/2014 5 Replies

The engine had a very rough idle especially after you put it in drive. We installed the lower and upper intake gaskets we started it up and it still had a rough idle. We saw the passenger side front catalytic converter red hot. We replaced it. After we did the...

5 Replies Received (View Replies)

  Related Documents & Media  2003 Ford F-150 XL

 
Message Closed w/FIX

car Vehicle Data

2003 Ford F-150 XL

VIN [No VIN Available]
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed w/FIX

car Vehicle Data

2003 Ford F-150 XL

VIN [No VIN Available]
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)