Check your timing. Its been know that an engine thats off time will run hot. If your off time then that might fix your sputtering and heating issues.

 

Timings good. Had it checked.

 

I'm going to put that issue on its own thread

 

Since you "cured" it temporarily by burping it, I suspect it's a bubble. It may take some time to build up enough to cause the problem.
When it cools off the system becomes a vacuum. It is supposed to pull coolant from the bottle. If there's a tiny leak it pulls in air - making the bubble.

It can leak in air under the negative pressure without leaking fluid out. Often hard to find.
Try tightening all connections - hoses and gaskets.

Using a pressure tester and over pressurizing the system can sometimes find it, but not always.
Too bad they don't make one that can evacuate it too!

Often it's the cap's fault (you take it off to test the system - so the culprit is in your hand!)

When hot and you are parking it for a time, notice where the fluid line is on the bottle. When it cools it should be considerably lower if it sucked fluid back in to the system - like it's supposed to do. A leak won't let it suck fluid in, it'll just pull in air - the bubble.

 

Take a look at your hoses, one of them might be collapsing when the XJ is not level.
odd, but you have an odd problem.

 

Hey I have a question. So I took it back for the dieseling issue and the mech said one of the e fan had a faulty motor now. He looked up the replacement and said for my truCk it only shows ONE large e fan and no mechanical fan. is that correct? I thought it was a mechanical and electric combo.

 

OEM should be one mechanical, belt driven fan and one electrical fan...

 

Ok so there's no way it's just one large e fan

 

So there's no way that it's one large e fan only? Because he says all he can find is one e fan no clutch fan.

 

I highly doubt it's one large e-fan. At least, I've never heard of that before...

 

Yeah that sounded weird to me. I'll talk with him.

 

I just stopped by a custom jeep shop and they said one E fan and no clutch fan should be fine.

Confused!!!

 

what are the stock cfm numbers?

 

The belt driven fan, with a properly functioning fan clutch, will pull way more CFM (than the OE efan) at just above idle speed. Find a new mechanic and Jeep shop.

http://www.jeepforum.com/forum/f11/e...sults-1182706/

 

From post #1 -

"""""I was out four wheeling and stopped on a small hill facing uphill and the temp gauge jumped from 210 to red. The instant I turned around and faced downhill at a stop, it dropped back to 210 or less.""""""

So you guys are saying the electrons to the E-Fan can't run in a wire that's not level?

Doesn't anybody THINK?