i just changed my stock control arm bushings with new moog bushings. got it all back together tonight and now my tires are toed out a little. is that normal? not a big deal i can just adjust it but i was just wondering if that should have changed anything. thanks

 

Got it, thanks. Gonna try and find some this weekend.

 

If you can get to the other end of the wires, you can check continuity with a multi meter.

 

+1 continuity test. Also test each of them to a known ground in case of a ground short. Rear O2 wire is probably chewed up by a drive shaft.

Since you didn't list your year, and your pic looks like a 97+, I'm going to assume you have a 97+. On the OBD-2 models the downstream O2s are involved in setting fuel trim.

 

I've got an 87 cherokee with a 4.0 that I bought back in June of 2012. It has an intermittent miss that is driving me bat-s#@t crazy. I have done all of "cruisers" renix jeep refresh tips. I have replaced the TPS, 02 sensor, ignition module (under the coil), cap, rotor, plugs, wires, crank position sensor, and gave tripple checked all plug in connectors. It passed emmisions with flying colors and starts and runs rwally good with no issues other than the intermittent miss. It does it mostly when driving at a steady speed and may do it only once or twice in 20 miles and sometimes it does it every minute or so. It does NOT miss when accelerating or sitting still idling. I don't think its an interuption in spark because the aftermarket tach does not glitch when it misses. When it misses it is a very quick slight jerk and sometimes it is a light miss and sometimes it is a hard miss. I have tried every connector under the hood and I can not get it to miss when idling. The fuel pump is noisy sometimes but it misses whether the pump is being noisy or not. The only thing I can think of now that it could be is a sticking injector or a bad ECM since it seems to go away after I've unplugged the battery but it comes back in a day or two. I'm at my wits end. I've worked on cars for over 20 years but this one has gotten the best of me. Surely somebody else here has had the same problem and found the solution. I am fed up with this stupid Jeep and I am dangerously close to taking it out in the desert and tossing a couple of road flares in it and walking away. Or putting it on craigslist. I've put a ton of money into this bastard trying ti get rid of this stupid miss anx I'll never get out of it what I've put into it. Somebody please help. My Jeep's future is precariously hanging by a thread.

 

Can I just buy like 100ft of like 26 awg wire and run all new wire? If so does anyone have a diagram as to where the wires connect? And yes its a 99.

 

I've got an 87 cherokee with a 4.0 that I bought back in June of 2012. It has an intermittent miss that is driving me bat-s#@t crazy. I have done all of "cruisers" renix jeep refresh tips. I have replaced the TPS, 02 sensor, ignition module (under the coil), cap, rotor, plugs, wires, crank position sensor, and gave tripple checked all plug in connectors. It passed emmisions with flying colors and starts and runs rwally good with no issues other than the intermittent miss. It does it mostly when driving at a steady speed and may do it only once or twice in 20 miles and sometimes it does it every minute or so. It does NOT miss when accelerating or sitting still idling. I don't think its an interuption in spark because the aftermarket tach does not glitch when it misses. When it misses it is a very quick slight jerk and sometimes it is a light miss and sometimes it is a hard miss. I have tried every connector under the hood and I can not get it to miss when idling. The fuel pump is noisy sometimes but it misses whether the pump is being noisy or not. The only thing I can think of now that it could be is a sticking injector or a bad ECM since it seems to go away after I've unplugged the battery but it comes back in a day or two. I'm at my wits end. I've worked on cars for over 20 years but this one has gotten the best of me. Surely somebody else here has had the same problem and found the solution. I am fed up with this stupid Jeep and I am dangerously close to taking it out in the desert and tossing a couple of road flares in it and walking away. Or putting it on craigslist. I've put a ton of money into this bastard trying ti get rid of this stupid miss anx I'll never get out of it what I've put into it. Somebody please help. My Jeep's future is precariously hanging by a thread.

 

I wouldn't run new wire if the wire that's there is good. Do you have a multi meter? It's easy to test the wiring if you have a meter and can get to both ends of the wire, check to see that the wire isn't broken, and that it's not got the insulation rubbed off, and is grounding out on something.

 

Ya I have one, but I'm pretty sure the o2 wire runs in with the transmission wire covering so it would be almost impossible to check for breaks. Anyone have a diagram of where the o2 wires go to so I can test them?

 

Have you indexed the distributor?

 

As long as you can find out where it connects to the ECM, or wherever the connect you can check for a break in the wire. Find out whitch pins in the connectors at the ECM or wherever they connect to are for the o2 sensor, jump the wires together at the o2 sensor plug, and hold your test leads on the pens at the connector for the ECM. It you he. Resistance, the wires are good. Then check the wires to ground, find a goo ground and hold one test lead on the wire and one on the ground one wire at a time, if there is resistance, then the wires have a bad place in them.

 

Thanks, but what does the thing I put in caps mean?

 

"If you have", the iPhone keyboard sucks.

 

O lol thanks

 

You will need to find a pin out diagram for the PCM for your year xj. That will show you where the wires for the o2 sensors are in the connectors.