Absolutely. The ECM (computer) takes info from the 02 sensor and adjusts fuel/air mixtures accordingly. Your ECM isnt getting this info.

 

I would say not likely but can cause a check engine light..

I say follow what Stryker said, I've had that very same problem and answer in the past..

 

OverlandXJ, I can see what your saying, other than running crappy a XJ can run with it unplugged..

His 'jumpy" RPM would seem something a bit more importain...

But you never can tell all Jeeps are different in there own way..

 

I still can not find the CPS. I am very mechanically challenged. It connects to the transmission bell housing on the left/rear side, right?

I need to clarify again before I go back in my 5 degree garage and lay on the concrete floor hah.

 

I'm not sure how much this will help but its worth a shot.

https://www.cherokeeforum.com/f51/testing-cps-5563/

 

What do you guys think will be the best way to get to it?

 

Because when I crawl under it, I can not find it.

And when I look through the compartment, I don't see it.

 

Your CPS is on the driver's side toward the top of the bellhousing. It is very difficult to see from the top or bottom. There is a connector on the driver's of the fire wall between the motor and the brake master cylinder. You can open this connector and read your CPS out to determine it good or bad.

 

Yeah no need to mess with the CPS that is connected to the bellhousing I was talking about just unplugging the connector side and plugging it back in.

If you are mechanically challenged I would take it to a shop if you decide to replace the CPS the last thing you want to do is drop one of those bolts into the Bell housing.

As far as the O2 sensor I though there was only two wires going to them and you had a third that was there so I will have to recheck.

And Nick Bad connection can and will make your truck run funny on a )2 sensor. It is better to have it Unplugged than wires crossed and shorting out between the two.

HTH

 

I found it lol. The connection was secure.

 

A two wire O2 sensor just does the O2 sensor function. A three wire O2 sensor has a heating element built into it. This heating element can go bad and cause a CEL and the O2 sensor still works as advertised. I've seen this happen before in 97 Plymouth Voyager.

 

I don't know what to make of that hah.

I am going out wheelin' in a bit. For a quick fix, should I tape each of the severed ends separately or should I twist them back together then tape?