2002 Mazda 626 Engine overheating when a/c unit is running

2002 MAZDA 626
80,000 MILES • 6 CYL • 4WD • AUTOMATIC
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MIRI01
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  • 2 POSTS
I purchased a used 2002 Mazda 626 about 1 year ago and recently it has been overheating when the a/c unit is used. I replaced the water resevior which had a crack in it and there are no leaks from radiator, what could be the cause of this?
Jun 19, 2008 at 6:18 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Hi miri01,

Are the radiator and condenser fans working?

Did you check the coolant level in the radiator?

If yes to both the above, you might have a weak water pump, partially stuck thermostat, clogged coolant passage or radiator.
Jun 22, 2008 at 11:44 AM
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