14 mpg in my 91 LX

[Max91hatch]

Would a broken thermostat cause bad fuel milage? my temp would stay at around 140. I just replaced it and im curious if thats the reason my gas milage was soooo horrible.

My engine lights on. What are the other major symptoms for giving bad milage?

 

[BELL]

plugged exhaust, in dire need of a tune up, cap, rotor, oil/filter, plugs, wires,ect... Vacuum leak could be one, and yes a bad thermostat would not allow engine to run a normal operating temp... possiblities are endless pull the codes find out for sure

 

[ChristmasGT]

It's also possible that your Fuel Gauge is bad...


Mine sits on E at 200 Miles.

But I drive until 310.

 

[Shawneebear93]

Mine is about E at 200 miles! I can push it to around 230 if I have to, but I don't really like to.