so ive been getting horrible gas mileage on my 07 accord i4 ~24k miles. about 15mpg mostly city. one of my friends suggested that the thermostat may be bad. what do you guys think? is it easy/cheap to replace?
Often times the o2 sensor won't throw a code. The ecu reads it based on range and unless it passes a range or unplugged or bad noCEL will occuri have never truely seen a honda thermostat fail.unless its got 150k plus.i never replaced one....02 sensor if theres any issue with an o2 your gonna get a engine light.possible bad gas, do you start ur car and let it warm up in the morning?or do you drive the hell out of it.lol.
Normally o2 sensors are not covered under warranty unless throwing a code during your warranty period. However since you have such low mileage I would take your car to your dealer and see what they say. Please keep us posted on your outcome.yea i always thought i would get some kind of light/code if an o2 sensor is bad, so i never thought that would be the problem. are those sensors covered under warranty? cause theyre pretty pricey.. especially like 4 of them or something? not sure how many there are in the car haha. and i usually dont let it warm up cause ive seen a few threads saying warming up the car isnt really needed for newer cars? maybe ill let it warm up for a few minutes before moving from now on..
i have this exact same problem and i have an AT av6 coupe 2003. is there a procedure in determining if the o2 is going bad? can i find out by going to autozone and getting the code read? im getting 270 to a full tank and i dont think i drive very aggressively especially since i got the drop. i got an alignment just in case to see if thats causing the bad gas mileage but im still getting 270 to a tank.Hmmm......this might be my problem too. I have a CEL that has came on 3x every ~1K miles for the past 3K. I've also been getting bad gas mileage, around 275 to a full tank. I drive spiritedly but not all the time. I used to get at least 330-350. I'll have to check mine!