Question about 1995 Toyota Previa

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Got new radiator , checked water pump and thermostate for toyota previa 1995 but is still over heating what else could it be please any ideas.

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  • lisa_ames Dec 30, 2010

    once we have located the bleeding points will try and see what happens thank you so much



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There is 2 bleeding points. one by the radiator the other by engine.

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Posted on Dec 30, 2010

Testimonial: "thanks for getting back so quick , will try to locate bleeding points and hope for the best"


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When the car is cool i would remove the coolant (radiator) tank cover and start the car then check to see if there is flow in the tank and see if the coolant level is really low if so fill it up to the proper level but ifthis is ok look to see if there is any flow in the radiator you should be able to see the water flowing around in the radiator or tank.
If you do not see any flow i would check the water pump outlet hose to see if there is any pressure if not then i would try to replace the water pump but if there is good pressure I would suspect the thermnostat it could be stuck shut thus not allowing the water to flow through the engine. in this case replace it.
And finaly if the radiator it'self is clogged it wont let the water circulate thru the system thus overheating the engine and you might even have a faulty thermostate temperature sensor but since you are saying that the fan is kicking on like it should i would not suspect this ok
I hope all of this is very helpful for you
Best regards MIchael

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1 Answer

Over heating

The water pump has what's called a 'weeping hole' built into it. If the pump is bad You'll se water coming out of the hole. When was the last time you flushed the radiator? It may be your radiator cap is bad, they should be changed once a year & the radiator flushed. You can also test ur thermostate. take out ur thermostate & put it in a pot of water so that the water covers the thermostate. Then put a cooking thermometer in the pot to & heat the water til it says 195. u should see the car thermostate begin to open. if it don't it's bad & needs replacing.

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