1998 Jeep Cherokee drop in mpg

1998 JEEP CHEROKEE
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KMZWOLVES04
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1998 Jeep Cherokee 6 cyl Four Wheel Drive Automatic

My 98 jeep grand cherokee dropped down to 6miles per gallon. I have done a complete tuneup, and it ran fine for about 3mths till the major drop in milage. What would cause such a drop?
Dec 16, 2009 at 1:26 AM
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ZACKSCHULZ
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this could be the gear ratios in the axles or even the fuel pump dumping fuel into the carb.
i not either of them the computer.
Dec 21, 2009 at 9:43 PM
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