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My son and I recently swapped a 98 4.0 into our 01 xj. We finally got it to start and run. One of our last hurdles is the o2 sensors. The 01 motor used 4, 2 before and 2 after the 2 cats. The 98 exhaust only uses 2, 1 on the down pipe and 1 post cat. Is it possible to run one sensor in each...

I'm just trying to verify where the engine grounds are on a 2001 after an engine swap. I have two set of ground wires on the passenger side of the block bolted to the block under the head. Are there others I may be missing?

2001 xj, 4.0. I'm trying to test the coil rail. I've seen specs ranging from .7-1.1 ohm as acceptable readings from the #2 pin to pins 1,3,4 on the rail connector. Haynes manual says .95-1.1, cherokeeforum says .7-.88. I'm getting 1.9 across the board. I know it sounds obvious, but is that...

Ok, this is a little complicated. We have an 01 xj. Blew the motor about a year and a half ago. Late last year, we picked up a motor from a 98 cheap. We managed to get the engines swapped out before work went crazy and winter set in. Now they we are a little less busy, my son and I are trying...

I've been trying to pin down a no start no bus condition. General consensus was CPS, so got a new one and the condition continued. I was able to crawl under the machine today with a meter and these are the readings I got - old sensor - infinite resistance, 1 volt dc, no ACv new sensor - 4.7 on...

So my son's jeep has been through quite the load of work the past 10 days. But today became a problem. After replacing all the brake rotors, pads, and the rear calipers (it has a zj disc conversion), the jeep started, pulled out of the garage, then shut off. When we tried to start it again, it...

2001 Limited, with dual power seats. The passenger side seat works, the driver side does not. If I understand what I'm reading correctly, they are controlled by a circuit breaker in the fuse panel. Is it possible that the breaker can work for one side and not the other? Its definitely a power...

We've been working on my son's new to him XJ. Its been 2 months of upgrading/repairing things that had been waiting to be done. Its a 2001 Limited. One of the upgrades was to put in LED brake lights and backup lights. This was done initially when I thought we had a bad bulb because the...

Before I try to track down the entire light harness, does anyone know of a particular problem that can cause the driver side headlight to be really dim/barely work? We put a new headlight in and that did not help. And the prior owner put in the harness upgrade.

My son recently acquired his first XJ, its a 2001 limited and he is in love. We were told it had a fuel leak and it was likely a loose hose or fitting and should be an easy fix. Unfortunately, that is not the case. We've dropped the fuel tank and found one upper corner bashed in. Its the same...