[97TacoDude]

How long does the stock O2 sensor typically last? I'm thinking about replacing mine because my gas mileage just went down quote a bit. I used to drive 350 miles on one tank, now I can't even go 300. Is 80,000 miles a lot for the stock sensor?

 

[My68ur8trd]

heres a bump for ya. im interested in knowing if i need one as well. i attempted to take it out last nite to clean it but teh nuts are rusted all to hell.

Justin

 

[tanKoma]

usually they go bad after the 100000 mark, ur check engine light should go on if its gone bad, for once theyre cheaper to get from toyota than napa

 

[97TacoDude]

As it's starting to go bad, will the fuel economy go to heck? It sure seems like my fuel economy is just gone. I may as well be driving a small block V8 instead of a 4 cyl.

 

[tacoboost02]

you sure it's not because of the winter gas?? Not sure where you are living.. Mine has dropped from 330 - 350 to 270 - 300 because of the winter gas mix.

 

[97TacoDude]

Yea I was thinking about the oxygenated "winter gas" too. I guess that really kills the mileage. It does however seem like the engine has more power on the O2 doped gas.

 

[flatlandtacoma]

Yea I was thinking about the oxygenated "winter gas" too. I guess that really kills the mileage. It does however seem like the engine has more power on the O2 doped gas.

That is definitely your imagination. RFG has less BTUs per gallon. Hence the lower gas mileage.

 

[tanKoma]

i had sensor no. 1 go bad and the engine had a rich fuel mixture, and i could smell it coming from the tailpipe

 

[97TacoDude]

What months do they dope the gas in PA, or rather how would I find that out? Can you still buy normal gas anywhere?