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post #1 of 6 Old 08-17-2018, 08:28 PM Thread Starter
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Cool cap

Having issues with running too hot, it's fine at low speed 2wd or 4wd, 70+ if its flat, however start climbing in mountains at 55 or greater and it heats up quick. raidiator cap is not cold but definitely not hot, same with hoses. New raiadiator, new water pump, new thermostat. I'm now leaning toward bad thermostat out of the box, is this crazy? Any other suggestions?
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post #2 of 6 Old 08-17-2018, 09:25 PM
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Having issues with running too hot, it's fine at low speed 2wd or 4wd, 70+ if its flat, however start climbing in mountains at 55 or greater and it heats up quick. raidiator cap is not cold but definitely not hot, same with hoses. New raiadiator, new water pump, new thermostat. I'm now leaning toward bad thermostat out of the box, is this crazy? Any other suggestions?
Any chance you installed the thermostat backwards?

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post #3 of 6 Old 08-18-2018, 03:18 AM
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Quote:
Originally Posted by Attaboy View Post
Having issues with running too hot, it's fine at low speed 2wd or 4wd, 70+ if its flat, however start climbing in mountains at 55 or greater and it heats up quick. raidiator cap is not cold but definitely not hot, same with hoses. New raiadiator, new water pump, new thermostat. I'm now leaning toward bad thermostat out of the box, is this crazy? Any other suggestions?



this--->"raidiator cap is not cold but definitely not hot, same with hoses"

speaks loudly; do u mean that your hoses are not extremely hot ,nor is rad cap ,to the touch after achieving operating temps?

if so, that is no bueno.
you should have one upper hose in particular quite nearly too hot to touch as would be the rad cap.

When you squeeze upper hose ,after its heated and when coolant should be in hose running thru the coolers, you squeeze said hose and feel fluid resistance? Or, after you're parked just after running jeep you hear fluid up in that hose when squeezed?








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post #4 of 6 Old 08-18-2018, 04:28 AM Thread Starter
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I personally did not install thermostat, I had a new copper brass high efficency raidiator installed, they changed water pump, backer plate, thermostat and housing now I have the issue of running hot on an incline. So to answer your question i would hope not based on this shop all they do is cooling systems and have been around 40yrs...but dont know.

As for the hoses, yesterday when my temp gage was in the middle (couldn't check when it got hot, or not safe due to traffic) i can put my fingers on the raidiator cal and leave them there (i dont have a big heat tolerance in my hands) i could also squeeze the top hose on the raidiator and touch my thumb and middle finger with the hose between them, so not that hot definately mor 200+ degrees. The top hose has something in it, dont know that it was full though.

The raidiator whol har it for 3 weeks, jeep dealer had it the next 3.5 weeks and did nothing, now i took it to a guy i know at a ford dealer. It's been 7+ weeks with no vechicle, until 2 days ago I got it back, just to find it doing the same thing.
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post #5 of 6 Old 08-18-2018, 09:45 AM
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Yank the t-stat out and put it in a pan of boiling water. You'll be able to tell if it's working or not.

Another thing you can do is check to see if the entire radiator gets hot when the engine is up to temp. If not, that would indicate some kind of blockage.

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post #6 of 6 Old 08-18-2018, 05:19 PM
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System may need to be burped. Itís possible it may have air it.
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