Horrible Gas Mileage in SF

fuel4soul · Post by **fuel4soul** » Sun Oct 26, 2003 2:24 am

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.

joatmon · Post by **joatmon** » Sun Oct 26, 2003 7:14 am

What silver said. It's auto trans right? Does it have some sort of Overdrive disable? You want overdrive for good highway mpg.

fuel4soul · Post by **fuel4soul** » Sun Oct 26, 2003 12:41 pm

No overdrive, No lead foot. Will try the other things mentioned. My dad's a mechanic so that helps..

Sub-Vibe-R · Post by **Sub-Vibe-R** » Sun Oct 26, 2003 10:28 pm

Defective O2 sensor can cause this. If it does not work properly, you'll be running too rich and decrease you MPG.

pmh013 · Post by **pmh013** » Thu Nov 06, 2003 7:00 am

So can a plugged/defective catalytic converter. But, it should also trigger a CEL.

Horrible Gas Mileage in SF

Horrible Gas Mileage in SF

Re: Horrible Gas Mileage in SF (fuel4soul)

Re: Horrible Gas Mileage in SF (joatmon)

Re: Horrible Gas Mileage in SF (silverawd26)

Re: Horrible Gas Mileage in SF (Sub-Vibe-R)