my car has not ran right in about two weeks.code 13 has poped up and I changed the throttle sensor with alittle better idle.But the car stutters and stalls unless you floor it.Will the o2 sensor cause this?The code says replace either one.I just don't know if the o2 will do this.

 

Code 13- Oxygen sensor circuit- sticking throttle position sensor; poor electrical connection, open or short in circuit; defective oxygen sensor; defective ECM

First question, did you disconnect the negative battery cable after you replaced the TPS, so the ECM would "forget" the code 13 the first time? The first thing you should do is check the wiring to the TPS. Make sure there aren't any burns, cracks, or shorts that you can find. Then take a voltmeter and backprobe the 3 wires that run to the TPS. You should see 5 V between the gray wire and the black wire (or ground), and 0.54-0.75 V with the throttle closed and 4.5+ V with the throttle all the way open between the blue and the black wire (or ground). If all of this is within spec, than your TPS is fine.

How old is the oxygen sensor in your car? If it's never been replaced or is more than 2 years old than I would definetely replace it. Check the wiring for the 02 sensor and make sure there aren't any burns, crack, shorts, etc. And, yes, if your oxygen sensor is bad, it can cause any number of problems.

 

Yes the o2 is pretty old.Trying to get it off is a real pain.Any suggestions?

 

PB blaster and good 'ol elbow greese. Ledt the PB soak on it for a few hours before you bust any knuckles. It is amazing what that stuff will eat through.

 

My wifes uncle suggested getting a torch and heat it up a little bit.Me and three other guys have tried getting it off with no results.

 

What exactly are you using to remove it, 7/8" wrench, oxygen sensor socket, etc.?