2000 Chevy S-10 poor gas mileage

2000 CHEVROLET S-10
136,000 MILES • 4 CYL • 2WD • AUTOMATIC
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MRVICTROLA
  • MEMBER
  • 2 POSTS
I have a flex fuel 4 cylinder and I bought it used. I got this for better gas mileage, but have noticed that it does worse than my other s-10 with a 4.3 v6. I know someone with another flex fuel and he is getting great mileage (30 or better on the highway) mine only gets 18-20. I have done new plugs, wires and fuel filter. What could be the problem? My other truck, a v6 I get 24 mpg.
Mar 15, 2008 at 8:09 AM
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BLACKOP555
  • CAR REPAIR CONTRIBUTOR
  • 10,386 POSTS
you may have a bad oxegen sensor or it is ineed of a full vehicle tune up.

filter, plug, wires, oil change, air filter change, tire pressure, tranny fluid check, idle adjust.
Mar 15, 2008 at 10:03 PM
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