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1999 Mercury Cougar 2.5L Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy, MIL Lamp on
Have this cougar, ck engine light on for code po420 (catalyst threthold below efficiency), also have pending code for po402 for egr flow. Inspected exhaust system for damage okay, car runs good no missfire, does have a little rough idle and under hard accelera...
FIX posted 3/16/2004
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Message Closed w/FIX
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13 Replies Received
13 Replies Received
Related Documents & Media | VIN | 1ZVHX61L4X |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy, MIL Lamp On |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
1999 Mercury Cougar
| VIN | 1ZVHX61L4X |
| Engine | 2.5 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Poor Fuel Economy, MIL Lamp On |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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