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1999 Mercury Cougar 2.5L Monitors Won't Run
Hello fellow iATN members, I have this cougar that failed inspection for PO420. Had computer flashed per TSB. Drove vehicle for several days and cannot get evap and catalyst monitors to run, including a long highway run at steady 60MPH, let sit overnight, road...
Summary posted 6/21/2006
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Related Documents & Media | VIN | 1ZWFT61L6X |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / multi port |
| Emissions | OBD-II Compliant |
| Symptoms | Monitors Won't Run |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/Summary
Vehicle Data
1999 Mercury Cougar
| VIN | 1ZWFT61L6X |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / multi port |
| Emissions | OBD-II Compliant |
| Symptoms | Monitors Won't Run |
| Occurs | Always |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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