Question about 1995 Chevrolet Caprice Classic

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Water keeps boilimg out of the overflow tank - 1995 Chevrolet Caprice Classic

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  • ZappaNut
    ZappaNut Oct 09, 2010

    Dude , check your oil... see if it's all milky looking.... ( ie; NOT oil looking ).
    My first instinct is to call blown head gasket....
    UNLESS there is no water flow in the radiator... in which instance I will call a bad waterpump....
    Has this all been happening just now ?
    Can you give more detail?
    what happened that lead up to you noticing this issue?
    Please get back to us , so we can resaulve this issue ... it is something that will effect the value of your vehicle... and the potential reliability of it as well !

  • kennethmontr Oct 09, 2010

    Thank so much!! I know the fan is not working properly and i have to tap the fan for it to come on.So, what should i do about the fan?

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  • Chevrolet Master
  • 6,826 Answers

The car is boiling over because either the fan is not working right, or the thermostat is stuck closed causing an overheat condition. The car may have to have its cooling system flushed and filled with 50/50 antifreeze to water solution. Also, the cap may be letting the water boil out into the overflow tank and exceed the capacity of the tank causing a wet spot to form below the tank.

Good luck on this repair.

Posted on Oct 09, 2010

  • Duane Wong
    Duane Wong Oct 09, 2010

    OK, the fan motor will have to be replaced, along with the relay if needed. Don't use a salvage yard part as they tend to be just as unreliable as the one you have.

    Get a new motor and fan assembly from the dealer if they still have it, or try to get an aftermarket fan and motor.

    Good luck on this.

  • Duane Wong
    Duane Wong Oct 09, 2010

    Replace the fan with a new motor and fan blade to rectify the situation. Also, check that the relay is ok by tapping on it to determine if it is sensitive to vibration.

    One can get a new motor from the dealer or an aftermarket source, but designs vary so try to match the fan blade to the motor.

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Posted on Jan 02, 2017

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