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1999 Mercury Cougar 2.0L MIL Lamp on
This one came in w/ a PO171 code and fuel trims both +25. We cleaned the maf but did not help so we replaced it and everything looks normal except long term fuel trim. It stays +25 @ idle and code comes back. Can't find any vacuum leaks or any other problems. ...
Summary posted 1/2/2003
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Related Documents & Media | VIN | 1ZWFT6034X |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed w/Summary
Vehicle Data
1999 Mercury Cougar
| VIN | 1ZWFT6034X |
| Engine | 2.0 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
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