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1990 Ford F Super Duty Custom 7.5L Poor Fuel Economy
vehicle getting about 3 mpg, changed o2,map,air temp, water temp sensors, fuel reg dry,34 psi fuel pressure,truck takes just as much fuel at an idle as driving,checked thermastat, manifolds are orange after driving, checked back pressure, which was all right, ...
FIX posted 2/2/2001
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| VIN | 2FDLF47G9L |
| Engine | 7.5 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / tbi |
| Emissions | us |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
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Vehicle Data
1990 Ford F Super Duty Custom
| VIN | 2FDLF47G9L |
| Engine | 7.5 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / tbi |
| Emissions | us |
| Symptoms | Poor Fuel Economy |
| Occurs | Always |
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