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Coolant boiling over, but temp guage reads normal 850 1994

posted by  someone claiming to be aviator on  Wed Feb 16 11:38 CST 2005 [RELATED]


My engine temp guage reads normal, but every drive of 30 minutes or longer results in a boil over. The boil over empties the reservoir and the low coolant light comes on. I refill with water or coolant depending on the mixture, trying to maintain a 50/50 mix. I was wondering if the coolant reservoir cap needs to be replaced, because I have seen the coolant boil right from the cap, Should I not use a 50/50 mix, or if the problem is more serious,like the water pump?

Any advice on what to do.
My email address is: aviator_6@hotmail.com

Thanks for the help.
aviator








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    Coolant boiling over, but temp guage reads normal 850 1996

    posted by  someone claiming to be Yellow 850 on  Wed Feb 16 17:30 CST 2005 [RELATED]

    Yes, a loose reservoir cap can cause boil even when the temp is ok.








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    Coolant boiling over, but temp guage reads normal 850 1994

    posted by  Moregolf on  Wed Feb 16 11:46 CST 2005
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    last visit: Tue Apr 22 07:55 CST 2008
    [RELATED]

    50/50 is fine. Not really needed but it's OK. What color is the cap? Are the hoses to the plastic container open and not plugged?








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      Coolant boiling over, but temp guage reads normal 850 1994

      posted by  someone claiming to be aviator on  Thu Feb 17 12:34 CST 2005 [RELATED]

      Hi,
      The color of the cap is kind of an aqua blue.
      The hoses appear to be clear.
      What dose the color of the cap tell me?

      Thanks
      Aviator








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        Coolant boiling over, but temp guage reads normal 850 1994

        posted by  Hamfisted on  Thu Feb 17 17:57 CST 2005
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        Early caps were grey and failed frequently. They were replaced with the blue/green caps in the later years. Take the cap off and let the motor idle, if you see it burping out a lot of air its probably a bad head gasket.



        Mike
        '95 850T







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