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2004 Mercury Monterey 4.2L MIL Lamp on
Posted to Ford Driveability on 10/15/2012 6 Replies

we check for vacuum leak and no luck;originaly was two codes one for lean condition po171 and code for [...] clean egr passages and replace egr [...] drove vehicle and code for lean condition come back.I check computer connector for moisture; cleaned and probl...

6 Replies Received (View Replies)

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car Vehicle Data

2004 Mercury Monterey

VIN 2MRDA20294
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.Po171

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
Message Closed

car Vehicle Data

2004 Mercury Monterey

VIN 2MRDA20294
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways
Misc.Po171

Trouble Codes

P0171Fuel System Too Lean (Bank 1)