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http://www.cherokeeforum.com/f2/rough-idle-code-p1391-124396/

When Matt stabbed the distributor in my 98, he messed and messed with it to make sure it wasn't a tooth off. I wonder if your distributor is installed correctly.

Yeah that does sound good, hmmm, I can't remember. You may have to check it when it's hot. How old is it? I mean $40 and 30 minutes of your time to change it...

Yep, Matt just confirmed it for...

I don't think it would heat up that quickly with just the electric fan not working. You may have other issues, but I bet the clutch for the mechanical fan isn't working very well. You get, I'll...

I suspect it's the mechanical fan clutch. Make sure you have a good shroud on there as well. Electric fan should come on with the A/C compressor. If the A/C compressor won't kick on the electric...

Check out this article. There is a part number for the right clutch fan, at least it was for my 1998.... :link:

Hey it's a fixer upper!

http://images.craigslist.org/3E33M83H75N15Ka5Had3nd0a3542f2bbb1f9d.jpg

http://houston.craigslist.org/pts/3699435164.html

When it's stock the marginal cooling system is fine most of the time. Add larger tires, bumpers winch, etc... well...

Oh not trying to show you up, just letting you know that the common statement that off road lights and winch cause your XJ to over heat isn't correct, or at least it hasn't been correct for me.

http://xjtalk.com/images/special/jeep_photoshoot068.jpg

Winch, 4 x 6" KC lights. 96 degree air temp, stop and go never above 50ish 1 hour drive home. A hair above 210. Drops back to a hair...

Jim this was my problem for years. New single "wide" row aluminum/plastic radiator fixed it. Also I believe I have a head gasket leak.

The spring is there to keep the lower hose from collapsing under load.

4.0L? If it's leaking from the center line of the engine and back about as far as the water pump, then it's probably coming out of the weep hole.

178

It could also be the thermostat housing,...

I don't think I ever posted in here my eventual solution. My problem was the radiator. Perfectly good 3 row CSF radiator. Just won't cool my 4.0 at highway speeds. I switched to a 1 row aluminum ...

Well I heard the neck was short on the Champion and some people had problems getting the cap on and off once installed. Also I wanted to spend as few $$$ as possible. After so many disappointments...

Several people have had, including myself in my 3 year quest, with aluminum/plastic single row core radiators.

The factory radiator is aluminum/plastic radiator.

It's still a bit early to say...

Great! BTW, you can subscribe to any thread by using the "Thread tools" drop down menu above. This goes for unsubscribing as well. :thumbsup:

I have seen a slight difference moving my tranny cooler from in front of the A/C condenser to the open slots in my bumper. I don't know what it did to the tranny temps though. :o( I have a factory...

I think you have the same problem I do. Runs cool on the streets, hot on the highway. I ran an experiment on the freeway today. A/C on 70 mph 2800 rpm coolant temp well past 210. A/C off 70 mph...

I don't know. I was surprised as well. The first one that failed was the factory water pump. The plastic fins disappeared, the engine over heated. The shop said the head was warped so $985 later...

Seems like I was replacing mine once every two years, sometimes annually.

Those were for the autopart cheapies, $40 water pumps. I have a Flow Kooler in mine now.

No that is it, I'm convinced. The long skinny radiator is not conductive to being cooled by little fans. Frankly I think that one mechanical and one electric that only comes on sometime is a really...

This is what drives me insane about the "experts". It seems all the simple stuff I can do and when it gets to the point I'm willing to pay someone, I can't find anyone that knows more about my...

Well I had some over heating excitement this morning.

This was my first morning drive in since adding the cowl induction scoop and regapping the spark plugs to .050. Jeep was running great and...

Man I wish I knew. I have the same problem with mine. I was hoping that putting some 35's on it would help lower the rpms and stop the engine from generating so much extra heat. Mine runs about...