Coolant issues
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Coolant issues
<HR style="BACKGROUND-COLOR: #d1d1e1; COLOR: #d1d1e1" SIZE=1> <!-- / icon and title -->I have a 2002 Ford Explorer and I am still trying to figure out why the coolant will overflow in the radiator reserve tank. I put in a new thermostat and a new cap to the overflow tank. When the tank is cold, sat over night, I put in new anti-freeze to the cold coolant line. Then I start up the explorer and let it run for a while. The temp gauge goes up, then drops a tad and cold air comes out of the vents. After I rev up the engine, I see the coolant level starts to rise in the overflow tank, then it goes to the top and starts to leak out. This takes a while being the thermostat has not kicked in to help suck the fluid in. Before this happens, the heater core lines are luke warm. After the tank overflows, the remaining gets sucked into the engine and I get nice warm heat. I have no idea what causes this. I had the test done to see if the head gasket is bad. The test was negative. Anyone have any ideas?
Hotshot
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Putting a plastic flush TEE in the highest heater hose will also work. I loosen the cap when filling the radiator overflow tank and let the air leak out the TEE cap till i see antifreeze. Cool air out of the heater normally means no antifreeze in the heater core.
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Ok, so don't fill the overflow tank when it's cold? That is the only place on my 2002 Explorer where I can fill the rad. What is a good way to burp the system? Thanks!
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Should I just take the cap off of the overflow and let it run for a as long as the bubble comes out and how will I know the bubble got worked out? And, do I keep adding anti-freeze so the level doesn't drop. It seems an air bubble will always develop if the level gets to low or the cap comes off. ugh..
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Hotshot
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have the overflow tank half full, run at idle or go down the end of the road and back, when thermostat opens, the water should flow, bubble come out, water level drop, and you can add another couple cups to the overflow tank... 1-2 times and the bubble should stop. Park with the front end pointed up hill a little if you have that option.
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I've always had troubles burbing my Explorer's cooling system. I usually just let it go through a few hot to cold cycles while keeping the reservior filled and it eventually works out. But that isn't really good to do because the sensors can become unsubmersed.
So I found a device for filling the cooling system that supposedly removes air pockets:
http://www.amazon.com/UView-550000-A...0249537&sr=8-8
I just bought one and am going to try it. It says it will also do leak tests, but I am not sure a vacuum is really a good leak test since it could suck the hoses and gaskets down to form a seal where pressure would lift and, thus, cause a leak. But I do plan to use it for the filling part. This devices seems to be really well made.
Anyway, I'll report back after I have used it to let everyone know if it can really eliminate the air pockets in a cooling system when filling.
Dan
So I found a device for filling the cooling system that supposedly removes air pockets:
http://www.amazon.com/UView-550000-A...0249537&sr=8-8
I just bought one and am going to try it. It says it will also do leak tests, but I am not sure a vacuum is really a good leak test since it could suck the hoses and gaskets down to form a seal where pressure would lift and, thus, cause a leak. But I do plan to use it for the filling part. This devices seems to be really well made.
Anyway, I'll report back after I have used it to let everyone know if it can really eliminate the air pockets in a cooling system when filling.
Dan
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