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1998 Mercury Mystique LS 2.5L MIL Lamp on
Posted to Ford Driveability on 4/15/2010 14 Replies

This car is eating my lunch! I have been working on it for days with no changes in the long term fuel trims. They are maxed at 25% and hence setting both bank lean codes. You can see below what I have already done. When I originally got the vehicle it had a br...

14 Replies Received (View Replies)

  Related Documents & Media  1998 Mercury Mystique LS

 
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car Vehicle Data

1998 Mercury Mystique LS

VIN 1MEFM66LXW
Engine2.5 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed

car Vehicle Data

1998 Mercury Mystique LS

VIN 1MEFM66LXW
Engine2.5 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)