1991 Isuzu Stylus • 4 cylinder FWD Manual • 255,043 miles

I was driving down the hight way no problems with it then the car starts******** then my check engin light comes on the idle changes or it just****** at what ever speed I go I replaced alltinator fuel filter cap rotor spark plugs a wires but it went to the coast and back with no problem and when it****** I get bad mph what does this mean
Jonboy 123
April 14, 2011.

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