Two weeks ago i put a thermostat in my f-150 it's a 300 and changed oil , since then i have replaced the bottom radiator hose that connects to the waterpump. since that day i have lost 3 gallons of radiator fluid and the last time i drove it i lost all my oil. whats going wrong ?
On this one, You will need to know where the water is leaking from and oil as well. Sounds like a hose or Tstat gasket. The oil leak cud be the gasket on the oil filter.
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SOURCE: ford ranger truck overheating
I have had this happen with my ranger. Changed everything I could to try to fix the over heating. It turned out that I had a small leak in my head gasket and it was allowing exsaust gas to go into the cooling system witch was over pressurizing it. Also the air from the exsaust will heat up much faster than liquid making your thermostat to read hot and will not be able to blow hot air in the cab because there is no liquid going to the heater core. This happened to me when my blet came off and I tryed to make it home. If you had it over heat for a long peirod of time it may have ripped the head gasket.
SOURCE: Where Does The Overflow Tank Hose Connect
The hose should go to the coolant tank. If it runs hot and pushes coolant out of that hose, and the radiator cap is good, the engine has blown head gaskets. Scrap it.
SOURCE: Temp gauge goes up and down
first i would purchase a new radiator cap 15 lbs 16 lb capacity cost about $7..then you must let car cool completely...now check radiator coolant level.. top off if it needs it. Now install new cap..let car warm up normally and after it get to normal temp range or higher put hand on upper radiator hose..it should feel hot and when you squeeze it you should feel a slight back pressure..this will mean that the thermostat and water pump are working correctly. if not either the thermostat you purchased is defective or your pump may not be working properly.
when you use just water in an engine the boiling point becomes 212 when you add the correct amount of antifreeze, depending on where you live, the boiling point will go up to 240 degrees. Make sure you put in the correct amount of mix.50/50 will usually work well. sometimes when a gauge does max out like that it could just be trapped air. if after you checked all this out and no air is trapped in the system, i would think that you may have a bad temp sensor. let me know if this helped thanks.
SOURCE: 2002 ford taurus. Radiator overflows but, temp gauge not hot.
It could be both your thermostat and water pump, it could also be an air lock in your cooling system. One way or another, I think pressure is building up in part of the system because its not circulating properly.
When its cool, take the top off your reservoir, give the bottom hose to your radiator a good few squeezes, see if the water goes down a little, if it does, you moved something on and probably cured it.
If not, run the engine up, to get it warm and bleed off any air in the system. (Assuming there are bleed taps in the system)
If that also does nothing, I reckon its your water pump. And if your changing that, I'd suggest changing the thermostat at the same time.
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