Question about 2000 Mazda MPV

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My 2000 mazda mpv is blowing air into the coolant tank at high revs. removed the thermostat and radiator was cleaned but there is no change

Posted by Anonymous on

  • Fernand Luc Bergeron
    Fernand Luc Bergeron Dec 31, 2010

    are there bubbles coming out while running engine and radiator cap off?



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If your getting air into your cooling system, the the most likely cause is a blown head gasket.

Posted on Dec 31, 2010

  • Rich Babcock
    Rich Babcock Jul 13, 2014

    let me add to this, head gaskets would be my answere for this, but I strongly recomend you take the heads in and have them checked, would be bad you replace the gasket and no change due to warped or cracked heads



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2000 Mazda M.P.V E.S 2.5 bleeding the coolant

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I drained the coolant on my mpv 2000 by loosening the drain plug. Coolant came out but the coolant on the reservoir is not draining. Any thought? thnks

Besides that is usually the case

Have to draw out with turkey baster or remove
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Changing the coolant has nothing to do with no heat

The thermostat may be stuck open or you have a coolant
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My Mazda MPV 1995 is overheating. I have changed the thermostat and fklushed the radiator. The water pump seems fine. Of note is the bottom hose going to the thrmostat is cold. Does this mean the water...

Nornally the hose will warm up but not hot with a circulating system. the therostae could be installed upside down or be bad. You should install a therostate with a asprin holding it open to circulate the coolant till the cooling system is full and the asprim will disolve as it soaks in the coolant. the air will ciculatre to the top and out and the systrem will be full. the stat will work corectly after the asprim is gone. with air around the stast it might not open and therefore overheat.

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I have antifreeze in the reservoir just changed the thermostat and gasket, all the fuses are good and the blower works great on my Mazda MPV year 2000, but I still have no heat only cold air is coming out...

Air lock in cooling system not allowing coolant to circulate through heater core. Need to bleed air or burp air from cooling system. Look for a bleeder valve by the engine side of the upper radiator hose possibly or on radiator.

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Dec 02, 2009 | 2000 Mazda MPV

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You probably never cleaned the cooling system out.

If you have not get it done by pros.

It seems something is blocking the flow. If the water pump went bad you will know. Rarely ever heard a impeller breaks off like you think. The bearings and the seal break first.

Check and see also if the heater valve is working.

As for the over heating even new thermostats fail. Reverse flush is needed or the procan measure the pressure in the radiator cooling system and edetermine if there is a engine pressure problem. Tools and experience is the key in the game of diagnosis.

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2004 Mazda MPV cabin air is just not getting hot enough.

If changing the thermostat didn't work, have the heater control valve checked, it may not be opening all the way to let the coolant circulate thru the heater core fully.

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check radiator fan and radiator if its ok cylender head problem after repair it .

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Remove the rad cap, start engine, rev at 2,000 rpm for 1 minute, replace rad cap while engine still running

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