Peace out bro, what's with the negative waves???? Maintenance before upgrading is stupid thinking?????.....really???? Installing a band-aid 1st on a possibly poorly maintained cooling system is smart???.......think about all the newbies that will eventually read this thread and your posts, in which the OP has already stated he's not sure about the condition of the cooling system (or something to that effect)......and your 1st recommendation to solve his overheat is a big fan clutch?????.......again, really?????.......but I guess a XJ lifted high in the air with big tires and sitting dead from overheating while out wheeling still looks cool.....pun intended.

 

I redid my entire cooling system. all brand new parts and I was still overheating and pulling out my hair
turns out my t-stat was bad straight out of the box. I removed it completely now it runs ice cold. the coolant is constantly flowing no matter what temp

I was going to run my efan to a switch to get more air flow, but this is working so far.
I also have the zj fan clutch. it's only really noticeable if you step on the gas hard. it's not so bad

but maintanance should absolutely be priority #1

 

No negative waves man, I respect you, and your advice. I'm just saying when we replace anything else we upgrade it. Why not the cooling system? I don't know about you, but whenever something goes bad on my XJ I look for something better than OEM to replace it with. I don't consider it a band aid, I suppose I should have been more clear, don't just slap a new fan clutch upgraded or oem in and ignore the rest of the cooling system, inspect and replace anything needed.

 

The FSM says 2 things regarding the t-stat.......1. the XJ left the factory with a t-stat that is closed below 195F......and 2. Do not operate an engine without a t-stat, except for servicing/testing.

For the newbie's sake......don't post up misleading information.

 

Well said..........and I'm not bashing upgrades, upgrading or modding..... just saying maintenance 1st, upgrades 2nd. If the OP mostly "wheels" and seldom DDs, by all means get the big fan clutch after also doing all the cooling system maintenance. If the OP mostly DDs and seldom "wheels" the big fan clutch can't distinguish between flatland pavement driving and offroad "wheeling" but the additional load on the motor is constant/all the time. Over a long time period and a lotta miles, the slight extra gas and loss of power add up and the big fan clutch may not be needed most of the time.

 

Guess it also depends on where you live. It was 102* here yesterday... The bigger fan clutch helps out a lot in stop and go traffic.

 

Dayum! Summer is supposed to be over, no? LOL I live in a desert.....it's 72 right now.

 

It's supposed to finally cool off to the high 80's next week. We've had a pretty harsh summer, had a few weeks of 110*+ heat. Even with a rebuilt engine and new cooling system I found the ZJ fan clutch to be a necessity.

I'm also the jackass with a bedlined XJ... (Was living in Montana when I did it...) I'm sure that causes my engine compartment to heat up more than it would otherwise.

 

......but just think, the 2012 overheating threads are all but over.......next '12/'13 hot topic....."My heater doesn't work, why?".

 

At least that's a much easier problem to solve than overheating.

 

That may depend on whether or not good cooling system maintenance has been done every couple of years or so.....anyone that's pulled a dash to replace a heater core will probably never forget how big a job it was (if they did it themselves) or how expensive it was (shop labor) to replace a $50 part.

Summer's gone, outside temps have cooled down......folks, it's time to start raising those hoods, doing a little maintenance, getting the old XJ ready for winter. I've said it more than once, I'll say it again......maintenance is what u do, before things break, on a Saturday afternoon, in your driveway, when the auto parts stores are open.....repairs are what u do, after things break, on the side of the road, after dark when nobody's open (and most likely because one hasn't done the maintenance). Git 'er done.

 

this is what i did on mine, i did a thread on it here's the link if it'll help or if any of you guys have any input... hope it helps..



https://www.cherokeeforum.com/f2/how...switch-133992/

 

thanks for all the inputs

 

First snow in Denver last night, let it begin!!

 

This guy has been saying this over and over in all the overheating post. When my overheating started I was attempting to save some money and change things one at time. I would have been time and money ahead to just take his advice. Read what the man says and take his advice, it works.