Prob is the sensor, check all the wires and the connections. And try that test in the vid in the link above.

 

good info, im going to check this out before i buy a new fuel pump...

 

I juSt got my new O2 sensor in yesterday. Cured all my problems. I guess running 110 won't get me more than a year worth of life out of it.

 

make sure the wiring isnt frayed anywhere, might have got caught or ripped from something

 

Possible, but reading constant is usually the sign of a dead sensor.

 

this is exactly what mine is doing as well... 14.9

i thought my fuel pump was going bad

 

I finally took out that original sensor, swapped in the one I found that was plugged into the harness under my passenger seat...at first it was working ok, then after 5 minutes it got stuck at 14.8...so now I got 2 bad sensors

Where's a cheap place to get the replacements? I think the cheapest I've seen was around $70ish

 

Thats about the cheapest you'll find.