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Horrible Gas Mileage in SF
Posted: Sun Oct 26, 2003 2:24 am
by fuel4soul
Sorry to go off-topic cars with my Sunfire, but I didn't think it belonged in the Off Topic section than right here.My 00' Sunfire get's the most horrible gas mileage on the highway, Probably about 20 in town and around 22-24 on the highway. My tires are aired up to the right PSI. Is there anything else that can contribute to this problem? Thanks.
Re: Horrible Gas Mileage in SF (fuel4soul)
Posted: Sun Oct 26, 2003 7:14 am
by joatmon
What silver said. It's auto trans right? Does it have some sort of Overdrive disable? You want overdrive for good highway mpg.
Re: Horrible Gas Mileage in SF (joatmon)
Posted: Sun Oct 26, 2003 12:41 pm
by fuel4soul
No overdrive, No lead foot. Will try the other things mentioned. My dad's a mechanic so that helps..
Re: Horrible Gas Mileage in SF (silverawd26)
Posted: Sun Oct 26, 2003 10:28 pm
by Sub-Vibe-R
Defective O2 sensor can cause this. If it does not work properly, you'll be running too rich and decrease you MPG.
Re: Horrible Gas Mileage in SF (Sub-Vibe-R)
Posted: Thu Nov 06, 2003 7:00 am
by pmh013
So can a plugged/defective catalytic converter. But, it should also trigger a CEL.