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Re: 7.3 diesel mpg
scb,
Your EBP (exhaust back pressure) sensor is probably plugged up or the tube going from the exhaust manifold to the sensor has a hole in it. The EBP sensor can be removed and cleaned with a small drill bit. The tube (you will see little black spots on it) obviously has to be replaced. The ECM has to read the right pressure or your mileage will be affected.
Gino
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