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Discussion Starter #1
I just moved from Los Angeles, CA to Vancouver, WA, half way through my trip my mazda started to overheat for a couple seconds then go back down. I replaced the water pump because I noticed a leak in it however, my mazda is still overheating and I’m noticing a small leak from the water pump area. What could this be?
 

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Discussion Starter #3
Did you replace the thermostat?
If not that will be the problem.

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I have not noticed any leaks from the thermostat and I can hear it still working. Could it still be that?
 

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Discussion Starter #5
Did you put the right pump on it? Itll cost almost $300 for the correct one from Mazda. IIRC theres a bypass or secondary water path that the others dont have.
Yes, I put the pump recommended through O’Rilley, Advance Auto and Autozone, same pump. It matched the exact size of the one I had. I’m wondering if it could be the water pump housing?
 

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Yes, I put the pump recommended through O’Rilley, Advance Auto and Autozone, same pump. It matched the exact size of the one I had. I’m wondering if it could be the water pump housing?
Exact size doesnt matter, it has to match perfectly or it wont work right. I have no clue about the pump housing.
 

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I just moved from Los Angeles, CA to Vancouver, WA, half way through my trip my mazda started to overheat for a couple seconds then go back down. I replaced the water pump because I noticed a leak in it however, my mazda is still overheating and I’m noticing a small leak from the water pump area. What could this be?
Is it possible that you still have air trapped in the system? I had a bit of a struggle with this on my v6. I had to disconnect the hose from the overflow to fill with coolant and flatten every hose I could see/reach to free air. It kept purging for months after (albeit slowly).
 

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I would start by replacing the thermostat. When a thermostat goes bad they don't leak and they never make noise. A bad water pump will not cause a momentary spike in coolant temp. You will have chronic overheating problems.
 
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