I think it's a 96 and yes they do

 

how do I clean it? do I run anything special through it? and I burp the radiator until its completely full.. altho im sure it probably sucks down air still. I want to try takeing the tstat out and run an open system. did that on my last jeep and it didn't overheat anymore. itd be a temp fix but it doesn't get cold enough here to let it bother me much while I find the real problem. the cooling ports in the block are probably clogged. not to sure how to unclog them if they are.. my last radiator rusted completely away and probably left a bunch of **** in the block.

 

I ran the prestone flush through mine with the thermostat stuck open. Drain and fill a few times to get it all out and run the normal 50/50 mix. I hit 200 normal driving and 210 in traffic. My fan is on a bypass switch just in case, but I have never needed it.

With my luck, something else will break on the cooling system after I fix this suspension.

 

ive done this before. im not to sure what I may have done wrong.. but I filled it and ran it about 4 times. hopefuly I can get this engine to cool down cause the summer is going to suck if I don't.

 

There is no point to running without a tstat. Once you hit the set temp it opens and you will have flow just as you would without it. all it does is make it warm up faster. without it your obd2 engine will spend more time in open loop and waste more gas. Granted mine is stuck open and I don't care to replace it. People say the prestone is good Iv never ran it. I just drain it. pull the upper hose off the block. stuff the water hose in the upper hose and stick a rag in to seal it up. install the radiator cap and turn on the hose. it will flow through the rad and then the block and out the top. afert it comes clean i fill it up with water and drive for a day. drain and repeat. some times flushing the other direction and sometime with the hose in the fill port. I do every combo to try to get all the crud out. once you are happy fill it up and get all the air out and be happy. I have never seen the point of putting the Efan on a switch. It already is on a switch, It comes on at 218, so if for whatever reason you are in traffic and it starts to warm up your fan will come on as long as its not broke.

 

Is the fan clutch up to par? Shroud in one piece and in place? Nothing blocking the radiator air flow?

I parked mine with the nose down, cap off, heater on, and let it reach operating temp. Parking with the nose up, I still had air in the system that I could not get out.

 

My fan comes on at 225, according to my temp gun. But the last time it came on at that temp, the thermostat got stuck open lol.

 

where were you taking the temp at? the sensor on your tstat housing feeds the ECM. ECM commands it on at 218 and off at 209. I would guess temp guns wouldnt be super accurate on a cherokee because of the super high under hood temps and heat saturation. The dash gauge is feed off of the rear of the temp sensor on the rear of the head FWIW. or hell it is a chrysler product for all we know the wires feeding the temp sensor could be ****ty and have high resistance giving the ecm lower temps than actually are.

 

It was at the front sensor, right off the t-stat housing. I used a Fluke temp probe from work and my infrared temp gun.

 

Jon what radiator did you put in there when you replaced it?

Im running an old *** beat up 3 core with ZJ clutch and no fan shroud and like I said before no problems other than putting the fan through the rad a few times lol.

 

so i get my jeep back on Monday then a 500 mile brake period before i can do much of any thing with it

 

speaking of cooling systems, I flushed my computers radiators today lol

 

Yeah that 500 mile break-in sucks but you'll be so happy when everything is running right.

 

where did you get those lights from i have been looking for a roll like that

 

yea when they pulled it into the shop they said it moved on it own but was smoking and shaking like hell even with 4 bent push rods 5 jamed lifters and im shur a piston or two ****ed up it still moved on its own cant kill the i6