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1989 Jeep Comanche 4.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
Vehicle came to our shop after an emission failure. We checked it out and found fuel pressure regulator leaking from diaphram. Replaced regulator and retested. We found oxygen sensor would not move (stays about .2 volts). We replaced sensor with a Jeep part, s...
FIX posted 7/14/2000
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| VIN | 1J7FT26L9K |
| Engine | 4.0 L / 6 cyl |
| Emissions | US fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
1989 Jeep Comanche
| VIN | 1J7FT26L9K |
| Engine | 4.0 L / 6 cyl |
| Emissions | US fed |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always |
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