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1996 Mercury Cougar 3.8L MIL Lamp on, po 171
replaced o2 and reset engine light. car cane back about a week later w/ same code check for vacuum leaks and none were found..especially around the intake plenum. emission levels are good. checked cat. conv. and temp is fine. during checking mitchel...
FIX posted 7/13/1999
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Message Closed
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| VIN | 1FAP52UL95 |
| Engine | 3.8 L / 6 cyl |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Po 171 |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed
Vehicle Data
1996 Mercury Cougar
| VIN | 1FAP52UL95 |
| Engine | 3.8 L / 6 cyl |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp on, Po 171 |
| Occurs | Intermittently |
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) |