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Old 09-16-2010, 10:21 PM   #1
eliphino
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mazda 626 cooling fan and ac problem

1999 mazda 626 4cyl manual trans, high mileage. High side AC pressure is 425 at 2200 rpm. Low side 35. The AC fan is coming on but the other fan doesn't seem to be cycling. Motor is good but no power to motor. Any suggetion for the fan and could this be the cause of the high pressure on the high side? Thanks
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Old 05-07-2012, 06:45 AM   #2
tobiasschnell
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Re: mazda 626 cooling fan and ac problem

Hello,
sorry to say but i have not faced this problem any time.
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Old 06-10-2012, 04:25 PM   #3
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Re: mazda 626 cooling fan and ac problem

Well that problem is actually very easy to solve, you problem should be a bad coolant temperature sensor is the one that monitors the coolant temperature and activate the fan as often as needed, you will usually find this sensor close to the inlet water hose or thermostat housing (water outlet)

If you want to be sure that is the problem before you change the sensor and spend your money you can perform a little test take the plug off the sensor it has two wires get a piece of wire and jump them together with the ignition switch open , if fan starts after you close the circuit with the jumper wires you can be sure your sensor is gone. Good luck buddy. Blessings!
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