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Re: Poor Coupe Mileage
Perhaps your car thinks the engine is cold? Hence running too rich.
Check ecu grounds, sensor connections, sensor outputs... and double
check that "tune up" - what did they do?
> I am only getting 12 miles per gallon from my 1984 coupe GT. This
> is after changin the oil (Valvoline Dura-Blend) and getting a tuneup.
> Does anybody have any ideas as to what could be the problem. It seems
> to run fine other than that.