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Found it. The wire from the ignition coil capacitor came loose and shorted to the block.

2000 XJ 4.0L automatic. It has been sitting for a couple years, just got it running again. I've ran it about 4-6 times in the driveway and drove it around the block 2x yesterday. Started it up today after cleaning the IAC because of high/rough idle and it idled perfectly. I drove it up the...

After the first 3/4 mile it is 15 miles of flat driving at 65 mph. Should be good MPG's from that stretch. I wasn't very clear in the last post that the 3/4 miles at the start of the drive is to get to the highway. Downhill and flat after that with no stops. Talyn apparently didn't know that...

Talyn - 22 mpg less 25% is 16.5 mpg's (what I am currently getting) In browsing other threads about mileage, I never read any comments about the sensor on the intake, thought I would look in to it. Sorry for my ignorance. I have about a 3/4 mile drive with one stoplight and a decent hill to...

Thank you for the helpful insight. I'm not trying to get 50 mpgs out of my Jeep. Trying to get an attainable/reasonable 22 mpg. Why is that so hard for some people to comprehend?

Good suggestions. Just to follow up on a couple. I have not disconnected the battery after changing any of those sensors. I will do that tomorrow night after I fill up. I wasn't able to check the vacuum lines for leaks this weekend as I planned as I couldn't find my mighty-vac until a half...

Also got to thinking, new radiator last summer. Engine operating temp is 210 +/- 5 degrees. I took compression readings about 15k miles ago. I forget what the compression was, but 5 cyls were in spec and one was about 12 psi lower than the others.

Blondejoncherokee - great questions! My friend is running 31's with a 3.5" lift. I can't feel or see evidence of any exhaust leaks. I have exhaust header to put on it, but have put that off for now. I don't believe there are any leaks on the intake. I used all new gaskets when putting...

Is your rig heavily modified with lots of added weight and things that kill aerodynamics? Mine isn't and a fairly stock rig like mine should get 22mpg on the highway. I'm on a quest to get more MPG's and everything I search on this site doesn't get much beyond the basics like I have already...

I recently sold my Jetta TDI as I moved closer to work and wanted to only pay insurance on 1 car. I previously had a '89 XJ 4x4 and could get up to 25mpgs with it. A co-worker has a '96 and gets close to 25mpgs. All 3 of the XJ's I'm comparing are 5-speed rigs. My 1999 XJ is stock height with...

Did you ever find the gray one? Is it the charcoal (dark) gray?

Hey - PM me your email and I can send the the pics i had of mine before I sold it.

MIG welding is quite easy. I've welded mild steel, stainless steel, titanium, zirconium, niobium and several other refractory metals that are difficult to weld. I do it at work as needed, but don't bother at home. I don't own a welder or pipe bending equipment as we have all that at work if I...

Congrats on your skills MaxxXJ. Guess you don't need to worry about buying a rack...

Would you be willing to sell the J100 mounting feet and cross bars separate from the rack? Are you also willing to ship it?

Do you still have this rack?

well... what did you end up buying and does it work?

I installed mine about 3 weeks or so ago. Not nearly the difference that I saw on the renix when I did it, but still a noticeable change. The idle is smoother, and low end is also smoother. I wouldn't say that it feels like there is any power gain, but $20 for it was definitely worth it...

I recently bought an engine from an 2000 Wrangler and it came with the cats on the exhaust right off the manifold and I have another cat from an XJ. I was parting out my blown engine and a guy was telling me there was a place near St. Johns? that recycles them. Said they would probably pay...

I will keep you posted. I might even make a junk yard run and pick up 2 more and sell you a set of six for $10. I know on my 89 XJ this was by far the best mod I did. It totally restored all the low end power, made the idle very smooth and even bumped up the mileage a little.