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Re: 99 ford taurus is running hot. No water leaks,
I had the same problem. car overheated and i had no leaks. It turned out to be the water pump fins were disolved because i did not add a radiator lubricate solution to the radiator water. antifreeze does not come with a lubricate as it use to several years ago. my car was still under warranty and a local ford dealer replaced the water pump. problem was resolved. I guess this is how the antifreeze manufactures make a profit without raising the price.
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ok check these things #1 check for leaks at the radiator #2 water pump for leaks#3 check for freeze plug leak#4 check to see if your cooling fan works#5 check to make sure the water jug is not leaking#6 fill the radiator with water then start your engine and try to see if you can tell if the water flows,if its not flowing check the thermostat,now you can check the thermostat by putting it down in some boiling hot water if while in the hot water it contracts its ok but i would replace it because it is work to go back to do so,check your radiator cap also,now if the fans are the problem then you should change the coolant temp sensor for the fans ,now i hope after making these check you will be able to solve the problem
First thing to check when the engine is cold is that if there is enough antifreeze in the radiator and after you run the engine for about 5/10 minuter check both the rad hoses to see if they are both at the same temperature, if the return hose which is the bottom one is cold then replace the thermostat. If both hoses are hot or same temp then make sure the radiator fan comes on?
if water is leaking from side of engine .. look to see if its leaking on side of intake check thermostat housing again check water pump or if its leaking towards the bottom of block it could be a freeze plug all easy fixes freeze plugs can be replaced with an expansion plug that has a nut on it to tighten to fit or replace with oem and a hammer
the thermostat can be easily changed from up top, the T-stat is located at the engine end of the upper radiator hose under the flange the hose connects to. Make sure u follow manufacturer's cooling system bleeding procedures when you refill after the T-stat is changed out.
i have just done this on mine after fixing a leak. yours is a simple one, you have an airlock. run the car till warm, remove the water filler, leave about 2" from the top and leave it running. eventually the air will come out. make sure you have the heating set onto hot front and back