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It could be that your radiator is rusted or damaged and need to be changed. Have it checked and flushed out to be sure. Another problem could be your cooling fan is not working properly, it should come on when the engine gets to a certain temperature. If it doesn't then check the connections and have it tested to see if there is a problem. These are the first things that should be checked out and also make sure none of the hoses are collaped or clogged. If you can feel the hoses getting warm after the engine has reached the proper temperature then water is flowing through them, you must check all the hoses even the heater hoses. These are usually the main reasons for overheating. But beware that there are other things that can cause it to overheat that has nothing to do with the cooling system. Good luck and I hope you find the problem. Jean

Answerthis can be caused by an old/defective radiator cap. i would replace it.

patricklaw1957@Yahoo.com

answer replace radiator cap would be my next move then if that doesnt fix problem check that engine timing is correct

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โˆ™ 2011-09-13 15:36:21
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Q: Why is the engine still overheating after you have replaced the water pump heater core and thermostat?
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Breeze no heat and overheating what causes this?

No heat coming from the heater and the car overheating is usually the thermostat stuck closed. The thermostat is supposed to open up at a certain temperature allowing the engine to warm up quickly.


How do you know if your thermostat is shot?

If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.


Why the electrical thermostat of a electrical heater can be damaged?

By overheating which will cause a change in the thermostat materials construction.


How do you know when to replace the thermostat?

Two good indicators of when to replace the car's thermostat: * When you have to run the heater (no matter what time of the year) in order to keep the engine coolant from overheating, * When you no longer get ANY heat from the heater core.


Motor heats up no heat out of the heater not overheating?

Perhaps a bad thermostat and/or a heater core


How do you know if your thermostat is bad?

If your engine is overheating and has no obvious leaks then suspect the thermostat. Of course you can remove it and check it, but the best thing to do is just replace it if it is suspect. It should be replaced every time you service the cooling system. when you turn your heater on the it wont blow hot air


What causes overheating in a Toyota?

A bad water pump or thermostat can cause an engine to overheat. A plugged (clogged) radiator or heater core may also cause an engine to overheat.


Why would my 94 trans am be overheating we have replaced heater core new rad cap therm twice and was told no blown headgasket what else could it be?

try your thermostat


You have 1990 Ford Aerostar 30L is overheating we had the thermostat replaced recently and it was working fine for a day now it is overheating again Also the heater is not producing any hot air?

Thermostat could be at the tempure setiting, No antiboil antifreeze coolant, and the water leakage or a bad waterpump.


Signs of a bad thermostat?

Thermostat stuck closed, engine overheating, temp gauge running very hot. Thermostat stuck open, little or no heat from heater, temp gauge not moving much off of cold mark.


Where is the heater core temperature thermostat?

The temperature of the coolant entering the heater core is controlled by the engine thermostat. The engine coolant thermostat is generally located at the engine end of the upper radiator hose.


Well having no thermostat blow my engine?

It won't 'blow' your engine to run it without a thermostat. However, it could accelerate wear on the engine over the long term. Also, fuel economy and heater performance will generally deteriorate. Simply put, engines are designed to be run at a certain temperature. For this reason, it is always best to run an engine with the proper thermostat. If your engine is overheating, then the cause of the overheating should be found and addressed rather than trying a band-aid fix such as removing the thermostat.

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