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1997 Mercury Mountaineer 5.0L Excessive Emissions
Vehicle came in for failed emission test (IM240 Colorado). Fuel control looks good most of the time yet occasionally the front o2 sensor signals go to zero volts (both left and right sensors at the same time.) There seams to be a trend of doing this under a he...
FIX posted 7/31/2009
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Message Closed w/FIX
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5 Replies Received
Related Documents & Media | VIN | 4M2DU55P4V |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
Trouble Codes
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction |
| P1151 | Fuel Rail Pressure - Maximum Positive Deviation |
Message Closed w/FIX
Vehicle Data
1997 Mercury Mountaineer
| VIN | 4M2DU55P4V |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Excessive Emissions |
Trouble Codes
| P1131 | Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction |
| P1151 | Fuel Rail Pressure - Maximum Positive Deviation |
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