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1999 Mazda 626 ES V6 - overheating when the ac is turned on.

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  • ketchups Jun 28, 2009

    Would that not cause it to overheat all of the time? Could it be an a/c cooling system problem? Have had several different responses when taken to the local mechanic, claiming a/c compressor/condensor/etc.. issue.

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  • 326 Answers

You have a warped head,cracked head or blown head gasket.

Posted on Jun 28, 2009

  • SABARI ANAND
    SABARI ANAND Jun 28, 2009

    have u checked what i said

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Mazda 626 v6 1999 when ac off overheating, if ac on -ok, if ac off 2 fans not works, if ac on 2 fans ok, Ireplace radiator, termastat, relay for fans.


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Exploded view of the thermostat assembly—626 with the 2.0L (FS) engine

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Exploded view of the thermostat assembly—626 with the 2.5L (KL) engine

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The engine cuts out(spits and sputters)at low rpms while the ac is on. If I downshift and get the rpms up it quits. Or if I turn off the AC while it's cutting out it stops. The problem lessened when I...


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