Follow up question about this weeks Jeep Tips

[nickyg]

First off, Thanks Steve for this weeks jeep tips. I've had my jeep for about 5 years now and never thought to change my O2 sensors. I'm old school and these new fangled autos mystify me.
So I picked some up at napa. but had a few questions.
1. I take it you ment both upstream and down stream sensors. If I only had money to do one at a time witch one should go first? ( I never knew there was 2)

2. both are stuck on there tight. What are the chances of the sensor disintegrating If i put a big pipe on the end of my wrench. I'm not too keen on useing a torch. Me and fire don't get along to well.. but I'll do it if I have to.

Thanks again.

[XJ Wheeler]

You can run the vehicle for a little while to heat it up, that should help a lot. But be careful.

[4.3LXJ]

First, this underscores the need for antisieze on the threads. Second, yes warming it up will help. It shouldn't disintegrate if you only put torque on the metal

[nickyg]

Thanks guys. I'll let u know how it works out and how many trips to the ER it takes.

[prerunner1982]

If it were me and I only had one I would do the upstream sensor as it communicates with the computer and helps control the fuel ratio. The downstream one is for emissions. At least that is my understanding.

[4.3LXJ]

I agree

[nickyg]

Got it done today,
I ran the jeep for about 30 min to get it nice and warm. I used a big ol cheater bar and with a lot of pulling they come out. and I only grabbed the hot pipe once before I put on some leather gloves.
Thanks again guys.

[XJ Wheeler]

Great to hear! And hey, now you can rob a bank without the worry of leaving prints behind. :D

[Mudderoy]

Got it done today,
I ran the jeep for about 30 min to get it nice and warm. I used a big ol cheater bar and with a lot of pulling they come out. and I only grabbed the hot pipe once before I put on some leather gloves.
Thanks again guys.

Did you put anti-seize on the replacement O2?

[nickyg]

Yup.. I put antisieze on it.