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1997 Ford F-150 4.2L Poor Idle Quality, MIL Lamp on
Posted to Ford Driveability on 1/4/2006 13 Replies

I suspect a vacume leak but not positive. The iac is a 48% and a/f is 22.4 with a iradic idle. I have checked all vac lines and intake manifold with no sign of a leak. All help is appreciated

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  Related Documents & Media  1997 Ford F-150

 
Message Closed w/FIX

car Vehicle Data

1997 Ford F-150

VIN 3FAPP11JXM
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

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

car Vehicle Data

1997 Ford F-150

VIN 3FAPP11JXM
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)