Question about 2000 Mazda 626

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I think the water pump/thermostat are bad. Car is overheating and have changed radiator resevoir. Check engine light is on. Can you send me diagram of motor

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  • jonlouie Sep 04, 2008

    engine overheats, It started as an occasional thing, now it seems more constant the gauge never reaches the high end but comes close.

  • Ib42 May 02, 2009

    Exactly same problem. I was told there are two thermostats on this vehicle, one on top and another on bottom. Will check replace and post again.

  • Ib42 May 12, 2009

    The manual says there is only one thermostat in this vehicle. I am appalled at the ignorance of some mechanics I have been to, because they just don't know.
    Still overheating. Will replace thermo. tomorrow and see what happens. Two dumb mechanics have told me I have a crack in my cylinder head/gasket. There is no trace of coolant/water in the oil, no white smoke and engine is running smoothly...just overheats after a short drive on a hot day.

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Not sure if there are two thermostats, I know of one that I changed, it sits right above the starter and right below your air box. I had the problem my guage was reading hot on a cool night so I went and popped the hood and (after cooled) opened the radiator resivoir and the results were dry as a bone. I had steam coming from the cap. if you so this be sure to slowly release the pressure from the red cap that reads HOT WARNING DO NOT REMOVE. that is where you pour the coolant/water mix.

After I did that I took it to a shop and had it flushed, cleansed and refilled.....then I was runnin a beutiful bright green. Cost about 69.99 for flush then I found out my water pump pully was locked up and not rotating (not pumping coolant). So I fixed that last night and she's runnin pretty good after 190,000 miles.

Good Luck Mazda's

Posted on May 13, 2009

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