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MY jeeps still overheating after i replaced the radiaitor and thermostat. then took thermostat out and it is still overheating and the hose becomes swollen wen overheated.
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I have seen the water pump impeller go bad on a lot of jeep engines. Take off the top radiator hose and run the car. Run it long enough to have the thermostat open. Have a garden hose in the radiator inlet. See how much water flows through the hose.
www.jeepforum.com > ... > YJ Wrangler Technical Forum
Jun 2, 2014 - 15 posts - 4 authors
I ran a few searches here, read the tech sections, checked my hanes manual and so on, still a bit baffled. Was driving my 1995 2.5l automatic ...
Apr 20, 2011 - 4.0L Jeep Wrangler, 4.0L Cherokee and Grand Cherokee. ... Before youstart any of them, take a look at the entire article first. ... engine oil and coolant, a burned head gasket won't be able to keep any of them separated. 3.
Jul 2, 2013 - Blew a hole in radiator hose. Thermostat was stuck n failed. Replaced hose removed thermostat. Car will not start now. It started after hose ...
I'm not really familiar with JEEP mechanics but if you've replaced your water pump and it's still overheating with full water/coolant level, you should check the thermostat; when it fails, it's a common cause or overheating in all kind of cars
I'm attaching some links to Youtube tutorial about replacing thermostat in a Jeep but you can expand your Google search using terms
Youtube replace thermostat JEEP Liverty
sounds like you have blown the internal heater matrix and the thermostat is not working or is blocked. you are going to need a new matrix and thermostat and a bloody good flush out of the system just in case there is something in the system means taking off the rad hoses flush them out from both ends. and doing the same to the engine. replacing the matrix as its not going to be able to fix it if its shooting water out of the vents change the thermostat check pipes for damage.
try to replace the radiator cap w/ new ones,then do not fully fill the water reservoir w/ water leave some space for the air to circulate when water boils.done this and still there's a overheating your need to replace your cylinder head gasket,frequent overheating damages the gasket.
replace the cap , its allowing the system to over pressurize, also, you could have an air bubble thats moving around in the system, always make sure that you fill the radiator to just cover the radiator fins inside, this allows a place for expansion to happen. what you need to do is BURP your system, leave the cap off and start the vehicle, ( before doing this step,, make sure that you've replaced the thermostat, spring towards the motor , it only works one way!! ) once you see the fluid inside the radiator moving, it means the thermostat has opened, and your fluid level should drop down, slowly add more until the fins are just covered, and wait for it to close and recycle one more time, refill again, that should purge the system of unwanted air,, replace the cap, and fill the over flow tank to the lower level line,, and you should be set
The sensor would not likely have shorted, but the sensing material may have changed due to overheating. The thermostat may also be in trouble. Replace both, then take the car to Autozone or similar business for a free computer scan, which can remove any error codes. Then drive the car to see if it resets further codes. Make sure the cooling system is topped up in both the radiator and the overflow tank. Check your other hoses for condition and replace if necessary. If the entire engine overheated, be on the lookout for antifreeze leaks around the heads and for strange misfire codes. It may have warped the heads from excess heat. Hope this helps!
Pretty much self explanatory. the valve is called a heater control valve. when replacing it don't pull on the hoses to the firewall or you can damage the heater core in the dashboard (a job you don't really want to do). since there are several hoses there, make notes as to where the hoses go before removing them. Don't forget to put the small vacuum hose back on when finished. RE-fill the system with the heat on high and wait for the thermostat to open before closing it up. If overheat was severe, replace the thermostat....they become unreliable after that happens.
there are three hoses leading to the water pump. the biggest one oviously goes to the thermostat housing, but the other two are much smaller 1 inch hoses, one of wich goes on the water pump and the other on the thermostat housing. if you follow the hoses one will connect to the upper part of the overflow for the radiator after hitting a T in the lines, that hose connects to the thermostat housing, and the other goes to the water pump its self.
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