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1999 Mercury Grand Marquis GS 4.6L MIL Lamp on
CAR CAME IN FOR CHECK ENGINE LITE ON FOUND CODES PO171 AND PO174 IN MEMORY USED TSB [...] DID NOT WORK CAN NOT FIND OUT WHAT IS WRONG ANY HELP WOULD BE GRATEFULL THANKS PS CUSTOMER STATES CAR DID NOT RUN ANY DIFFERENT AFTER MIL CAME ON
FIX posted 10/7/2000
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| VIN | 2MELM74W3X |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
1999 Mercury Grand Marquis GS
| VIN | 2MELM74W3X |
| Engine | 4.6 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Cruise |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
| P0174 | Fuel System Too Lean (Bank 2) |
Video