2 questions?

first how can you check if the oxigen sansor is done?
sec. my obc temp sensor is loose or something, every time i go over a bump i ear a bip and the temp goes up and down up to 75 degre all the way down to -30, not sure what up with that. please help!

Any problems associated with 02 sensor won't appear until the car has warmed up a little. One way is the car will buck a little like a bad fuel delivery.

Sounds like the sensor is bad, although they are pretty durable. Get one out of a junkyard or donor car and see what happens.

I think my sensor is done, my car almose die a couple of time and i unplog it to see a difference and nothing apen, and like you said, look like i am missing fuel, my car buck a littel and i change the fuel filter, i was prety sure that was it but did not change a thing.

How about the fuel pump? That's pretty common.

not sure, how much presure sooud i have? or anyways to find if it is the fuel pump?

i found the temp sensor problem, it was that i dint have it and the reson why it was going crazy was becouse of a short on the wire. all fixe now.

Check the lift pump in the tank for proper operation too! Do you hear the fuel pump when pumping? Does it sound like bees in your fuel line? Thats a sure sign its on its way out!!

my pump sound a littel bit like a vacum leak, i think it is fine i will try the 02 sensor first if doesent work will come back to you guys. thanks for the input.