wth! my van's MPG went from 23 to 8.

[jaydee]

My mistake, thought the "85" referred to the fraction of gasoline in it.

You guys are missing something much bigger than energy content here. If he actually put E85 into his vehicle, which we have no indication is FlexFuel capable and is assumed to be not, it's going to run like absolute crap and fuel economy will dive dramatically because his engine isn't capable of tuning itself for that kind of octane and be misfiring like crazy. Long-term damage possible, but it's highly unlikely since he didn't mention the engine sounding terrible, or a check engine light.

 

[waggy]

no no i didn't put E85 in. there are only like 2 places that i know of that even carry it. neither of wich i get gas at. i tend to go to the same stations since i don't go many places.

 

[LTC8K6]

Jeez, I was only joking about the E85...

 

[andylawcc]

in case you haven't looked yet, O2 sensor ain't cheap. Mine (for a Toyota Celica) was about $120. and it was darn near impossible to get it off because the sensor was practically welded itself to the exhaust manifold after all these years.

however, i don't know how to, but make sure you know it is the O2 sensor that's at fault, cuz electric component are not returnable.

 

[hanoverphist]

in case you haven't looked yet, O2 sensor ain't cheap. Mine (for a Toyota Celica) was about $120. and it was darn near impossible to get it off because the sensor was practically welded itself to the exhaust manifold after all these years.

however, i don't know how to, but make sure you know it is the O2 sensor that's at fault, cuz electric component are not returnable.

a lot of times you can clean the tip of the sensor and place it back in to see if the mpg comes back up or the code goes away. ive never seen an o2 sensor go out and not give a code tho.