How can you confirm you have a faulty water pump

Asked by Jan 09, 2016 at 05:34 PM about the 2002 Mazda Millenia 4 Dr S Supercharged Sedan

Question type: Maintenance & Repair

Mazda is overheating and heater core not getting hot appears not enough
flow

2 Answers

140

Get it hot feel the hose to the thermostat see if it is hotter than the bottom hose if so it is thermostat. . Sounds like the coolant is low . Would cause heater to run like crap. Stuck thermostat do it too

I had already changed thermostat thinking that was the problem

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