What parts could you replace in your Jeep in order in to keep the heat down?

Could a Continental Elite Serpentine Belt or some type of serpentine belt reduce heat?
What about high pressure water pump?
What about a new performance thermostat?
(does a lower opening temperature help?)
What about a low or high pressure radiator cap?

92 XJ Manual

 

Why? Are you overheating or running hot? In that case, you need to go look for the cause,but not remedy a symptom.


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Why not? Not running hot or trying to remedy a symptom.

 

Your engine is designed to run within a certain temp range (which for a great part is regulated by your thermostat).

​​​​​​ Cooler isn't better per se.

So, why ?

 

The only engine (engine bay) heating issue (I am aware of) with a properly maintained/operating XJ is "heat soak" on the fuel rail in the 2000-2001 years.

 

What is that range?

 

good luck

 

Sounds like it aint broke. So why fix it? Will it be a trail rig, or used for towing, or used in triple digit climates? If not, i see no point in upgrading the cooling system. If serviced regularly, you should never need to. But parts do wear out. Waterpump, radiator, radiator cap, hoses, heater core, and thermostat. If the coolant looks dirty, flush it. I wouldnt bother with the belt unless there is something physically wrong with it.

Do you have a heater control valve? If you do, delete it before it cracks and dumps coolant. Not a pretty sight.

 

Well, no one has answered his question. But here are a few thoughts.

High flow water pumps are a waste of money. Sounds good in theory, but the fact is that the pump will pump more coolant than necessary to properly cool the engine, much more.
Performance tstat. Same thing same answer.

Cooling is all about temperature transfer and air flow. So, a clean radiator and cooling system is essential.
Air flow can be increased by eliminating the fan clutch. More air flow equals more cooling, up to a point. Some have put a ZJ fan clutch in, which will make the fan spin a little faster since it is a heavier clutch.
Having a full shroud on the mechanical fan instead of a partial shroud will increase air flow. The fan blade should be half exposed outside of the back of the shroud to allow centrifugal slinging of air and thus increasing the flow. (Really, backed by research in the HVAC industry)
Anything more than a single core never hurts, if you have the air flow to go with it.
Wiring your efan to operate all the time doesn't hurt either.
If you decide to run an electric fan set up, make sure total air flow is greater than 2000 cfm
Venting the hood in the proper place. There is currently an active thread on that.
Separate transmission cooler, if adequate can help too by removing a heat source from the return coolant to the engine
Adding an engine oil cooler can help by cooling deep internally

I am sure some will disagree, but those are all proven things to consider

 

and the radiator cap is there as a safety device. it not only keeps the pressure in the system at a certain setting to keep the coolant form boiling, it also releases at a certain pressure to keep the coolant from breaking any hoses or heater core and radiators. if you put a high pressure cap on, it could not release and your heater core could split unloading all the hot coolant on you or your passenger's feet and lower legs.

 

Yeah frequent on trail but no super ambitious when it comes to off road. Some towing, yes.
What do you mean by the belt having something physically wrong with it? It has fuzzy stuff on the edges, is that bad? No cracks that I noticed?

 

Obviously I was wrong in some of my guess thanks.

I like all the feedback, but thanks for the details. To the best of my knowledge I have never had a Jeep run at the correct temp, always a little over. haha

What makes more sense the transmission cooler to engine cooler? Transmission, since it would help towing?
Also how do you wire the efan? Are there directions for that?
What is engine cooler? <- Ice?

 

I guess it depends on how you drive. The factory set up is for the "average" driver. Hence if you start pushing that envelope, then some upgrades are in order. So lets say you want to crawl in death valley. Above average temps, slow vehicle motion etc. Then a good heavy duty tranny cooler is a good thing. But if you just drive to the mall and back, what you have is OK. When auto trannys work hard, they generate heat and can exceed the capacity of the factory cooler. The engine oil cooler is standard on some performance cars, including the 4.3L "truck engine" I currently run

 

No
No
No
No
No

the points @4.3L XJ would work

IF you live somewhere hot. My XJ doesnt get hot under about 75F ambient, as the ambient temp rises much over 80F it will be a consideration

fit a new radiator and water pump if in doubt

engine temp rising to 220F is completely normal

 

I disagree with your first comment. Take a look at my prior post made this morning, a bit before 7 a.m. Bunch of questions answered.