
2004 Mercury Mountaineer 4.0L MIL Lamp on
Started out changing fuel rail preasure sensor fix the problem with that code now vehicle is running lean fuel trims long term are 25% both banks replaced clogged fuel filter no help fuel preasure is at 39 psi specs are 40 repalced intake o rings and smoke tes...
FIX posted 10/4/2016
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)14 Replies Received(Hide Replies)14 Replies Received
|
Message Closed w/FIX
|
VIN | 4M2DU86K44 |
Engine | 4.0 L / 6 cyl / FLEX |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection / FLEX FUEL |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Not Applicable |
Trouble Codes
171 | Lean bank 1 |
174 | Lean bank 2 |
Message Closed w/FIX
Vehicle Data
2004 Mercury Mountaineer
VIN | 4M2DU86K44 |
Engine | 4.0 L / 6 cyl / FLEX |
Trans | 5-speed Automatic (Electronic) |
Delivery | Fuel Injection / FLEX FUEL |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Not Applicable |
Trouble Codes
171 | Lean bank 1 |
174 | Lean bank 2 |