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1998 Mercury Mystique LS 2.5L MIL Lamp on
Posted to Ford Driveability on 1/29/2004 19 Replies

rec'd from used car dealer. has been to other shops. fuel filter,all o2 sensors,coolant sensor,spark plugs and wires replaced. we have seen these codes on other tech help requests. does ford have a pattern failure problem that sets po171 and po174? we have a 2...

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  Related Documents & Media  1998 Mercury Mystique LS

 
Message Closed w/FIX

car Vehicle Data

1998 Mercury Mystique LS

VIN 1MEFM66L7W
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 w/FIX

car Vehicle Data

1998 Mercury Mystique LS

VIN 1MEFM66L7W
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)