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Re: CAR RUNNING HOT NO HEAT
Hello; you have water Disapating out of the passenger side of the Engine You have A cracked head or a leaking head gaskit.There is no fluid to circulate in the Heater core .Replace Head or Gasket Make sure Clutch Fan is opperating you have Over heated the ENGINE!?
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Have you checked the thermostat? Run the car until the gauge shows normal temp and carefully check the upper radiator hose. If it isnt hot and if you can easily squeeze it the thermostat isnt opening to let water flow to the radiator. If it's opening, check to see if the fan is coming on. If that's not running, check the voltage at the fan, then the fan relay. If you aren't getting power at either of those places it could be your temp sensor.
try the thermostat, located on the top radiator hose. top side of engine. also does it steam?? does it lose water but no leak, does the heat blow hot? if your heat isnt hot and it steams and loses water you may have a cracked head or head gasket. if you have heat, doesnt lose water and doesnt steam it may also be your water pump. most pumps will leak visibly from the weep hole when running
Ok well there are a number of possibilities. One to keep in mind is that some water pumps are really cheap and the fins will corrode and rust off leaving nothing behind to actually pump the water. If the pump really is working fine then there are two more possibilities. 1 the radiator is clogged,
2. there may be a head gasket leak.
3. you are sure your gauge is working right?
4. you didnt say what year or kind of car it is.. Is the electric fan working?
When the engine is overheating, are both upper and lower radiator hoses hot? If the water pump or the thermostat are failing the upper radiator hose can be hot while the lower can still be relativly cool.
If the radiator is plugged or the fan isnt working then both hoses can be Hot.
There is also a remote possibility that water passages in the head gasket could be plugged.
TAKE RADIATOR CAP OFF WITH ENGINE COLD AND CHECK WATER ..MAKE SURE RADIATOR NOT BLOCKED,,PLASTIC BAG ETC. THIS SOUNDS LIKE LOW WATER OR RADIATOR ..STOPPED UP INSIDE ..IF YOU HAVE GOOD HEAT IT'S FULL OF WATER. REPLACE T STAT B4 RADIATOR..IT'S CHEAPER. ALSO CHECK FOR RADIATOR COOLING FAN OPPERATION..I,M RULING OUT THE WATER PUMP.
Your heater core has a small leak. You can try to fix it with some rad sealant, the kind you put in your radiator, like "Barsleaks" or something. I find the aluminum filing type work the best. When your rad is low, mix the filings in a few cups of water, and then add to the radiator, and let it run for a while. If the leak is more than a pinhole, it probably won't last long, and the heater core will need to be replaced.
Did you run engine from cold, WITH HEATER ON, and fill cap off when re-filling system? If not, try that and see what happens. Let the engine get up to operating temperature and rad fan come on to cool 2 or 3 times before putting cap back on.
Is the fan running or do you have an electric fan? If fan isnt running or never comes on no matter what you do it will never run much cooler. If fan is good then you could flush the radiator a couple of times and that will help but if fan isnt working it wont last long
If the water pump is pumping you should be able to see moving water/engine coolant in the radiator when the radiator cap is removed and the thermostat is open. Have you checked to see if your electric cooling fan is operating properly?