Question about 1998 Toyota Camry

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1994 Toyota Spacia

Hello, the car over heats after it has been running for 10 mins, we have serviced the radiator, changed the thermostat and the fan belt and the car is still over heating. Please can you help??

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  • yadayada
    yadayada May 11, 2010

    Is this a USA model

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  • Toyota Master
  • 1,861 Answers

Are you using a TOYOTA thermostat? The OEM 'stats have what we refer to as a "wiggle valve", and the 'stat should be inserted with this valve point straight up to 12 o'clock. This allows air to be purged from the cooling system. If everything is good, you may just have a "air blockage"; the system will not pump air in the cooling jacket, the water pump will just cavitate the air, resulting in your overheat condition...

Posted on Sep 09, 2008

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SOURCE: 1994 Toyota Spacia

check to see if the lower radiator hose is collapsing, if not then take the fan belt off and check for slop in the water pump. Somethimes the pump can go bad and not leak. let me know if this works out for you.

Posted on Sep 05, 2008

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Your English is very good.

From what you have described, which is a rapid over heating of the radiator coolant fluid and therefore a hot engine condition, it would appear that the thermostat in the engine's cooling system is faulty.

If the thermostat is sticking in the closed or nearly closed position temporarily, there will be no flow or very little coolant flow between the engine and the radiator and the engine will overheat.

You have advised that after the engine is shut off , and radiator coolant fluid has cooled, you re-start the engine and drive the car without the overheating condition occurring again and the radiator coolant temperature is normal. This time there is no overheating because the thermostat is working normally.

You should have the thermostat replaced as soon as possible because allowing the engine to overheat can cause very expensive engine damage.

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Please also check that the electric fans which draw air through the radiator are operating. These run on a temperature sensor and will switch on automatically once the radiator coolant fluid reaches a certain temperature and then switch off again when the fluid temperature reduces. You will hear them running once they start up. If these fans are not working the radiator coolant can quickly overheat in various driving and temperature conditions because there will be insufficient air flow through the radiator to cool the fluid. If the temperature sensor is faulty or has died, or if the electric motors running the fans are faulty, the fans will not operate.

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1994 Toyota Spacia


check to see if the lower radiator hose is collapsing, if not then take the fan belt off and check for slop in the water pump. Somethimes the pump can go bad and not leak. let me know if this works out for you.

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youdoit

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