2nd Gen 3.7 waterpumps - longevity? - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 26 (permalink) Old 10-13-2016, 12:17 PM Thread Starter
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2nd Gen 3.7 waterpumps - longevity?

- cross posted to 6Crew -

I've been searching for info on waterpump problems, longevity...any general issues I should be aware of. Info seems to be pretty scarce. My 6 has 104k miles. Other cars I've owned were timing belt engines. I've always been one to take preventative measures and replace timing belt and water pumps to avoid problems.

Now, I'm fully aware the 3.7 has a timing chain. However, after doing some reasearch and digging, the water pump on this 3.7 is buried in the engine and can be a very expensive replacement or cause serious engine damage if one fails.

Is the fact that I only find scarce info on waterpump failures supposed to be reassuring? Did Mazda (Ford) intend for the waterpump to be a lifetime component?

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post #2 of 26 (permalink) Old 10-17-2016, 07:58 AM
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I'm not sure if it's necessarily a "lifetime" component, but if you keep up on the coolant flushes, I doubt you'll have any issue with it.

The fact that there isn't much out info out there IMO is a good thing, since the only time you'll see any info/stories on it is if it fails.


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post #3 of 26 (permalink) Old 10-23-2016, 02:57 AM Thread Starter
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I'm not sure if it's necessarily a "lifetime" component, but if you keep up on the coolant flushes, I doubt you'll have any issue with it.

The fact that there isn't much out info out there IMO is a good thing, since the only time you'll see any info/stories on it is if it fails.
Well, it seems my nightmare has begun.

Today, driving on freeway, my '09 6s died. I coasted to shoulder. Pulled oil dipstick and it was all milk. Pulled off oil fill cap and it was coated cream.

Now, what to do.

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post #4 of 26 (permalink) Old 10-24-2016, 08:01 AM
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Oh boy...

Definitely keep us updated with what the mechanic says about this. I'm hoping it's nothing that's terminal.


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post #5 of 26 (permalink) Old 02-17-2017, 07:52 PM Thread Starter
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I'm back! After my sulking and self pitty stage, I ponied up the money to get my 6s GT fixed. Water pump was the issue. One water pump, new timing chains and guides, and sla shit load of labor money and she's back up and running.

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post #6 of 26 (permalink) Old 02-18-2017, 03:28 AM
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Another one saved! Why did you do the chain and guides?
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post #7 of 26 (permalink) Old 02-18-2017, 08:35 AM
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Waterpump is driven off the timing chain. Always change everything, especially when it has this kind of mileage, while you're in there.

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post #8 of 26 (permalink) Old 02-18-2017, 08:56 AM Thread Starter
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Quote:
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Another one saved! Why did you do the chain and guides?
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Waterpump is driven off the timing chain. Always change everything, especially when it has this kind of mileage, while you're in there.
As b1lk1 said, best replace while there. When waterpump is replaced, it's recommended to replace chains and guides as well. I called around to a couple shops and dealers to get rough estimates on repair and they all said Mazda recommends timing chain replacement when replacing water pump.

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post #9 of 26 (permalink) Old 02-18-2017, 12:16 PM
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I didn't know it was driven by the timing chain. I'll have to look that up for my own education. I've not yet had a reason to look for my water pump since buying the car.
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post #10 of 26 (permalink) Old 02-20-2017, 03:29 PM
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It didn't take 4 months for someone to fix it, did it? If that's the case, I'm f*cked!

Knocking on 108K miles, and knocking on wood that my pump gets through the winter at least...


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