Question about 1995 Mazda Millenia

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95 Mazda Millenia runs very rough after overheating

My 95 Mazda Millenia overheated and died before I reliazed that the needle was pegged above the "H" and now it runs very rough and barely stays running after a little bit of driving (about an hoursworth of driving). Orginally I was told that I blew the head gasket but I have compression in every cylinder and it will run for about an hour before it begins to overheat. Would an extreme overheating cause issues with the computer? It is hard for me to think that it is a blown headgasket when it runs for about an hour before it begins to overheat and gradually get worse and worse as it is driven. The water pump does need to be replaced and there isn't a thermostat. Any ideas will be greatlyt appreciated

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Hi,
The compression test was a good test, but since you asked for ideas, I'd also check the following basic "naked eye" visuals:
1. Do you notice any white-ish smoke out the exhaust, especially after killing it then cranking back up?
2. With engine cold, take the radiator cap off and crank it. Does it act more violent than expected, like a geyser?
3. Loosen the oil pan drain screw to see if any water finds its way out from the bottom of the oil pan.
If so, to these tests... blown head gasket.
I hope NOT though... Good luck!

Posted on Aug 28, 2009

  • Wally Fr?nquiz
    Wally Fr?nquiz May 08, 2012

    And if it passes these tests?

    I checked the vacuum hoses and connector, all seems well...

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Dont know why my car keeps stalling..seems like its out of gas

Posted on Apr 10, 2011

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Hello, dmaplang and thank you for asking your question on Fixya!

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your
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Get more great money saving tips and tricks about your vehicle from: twitter.com/acoates23234

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