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Re: Poor Coupe Mileage
Did this drop in mileage happen suddenly after the tune up? Or
gradually over time? Possible causes are a lazy oxigen sensor, a
coolant temperature sensor going bad, a missadjusted mixture, or just
plain dirty contacts. Sounds like whoever did the tune up didn't do a
> 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.