2nd Gen 3.7 waterpumps - longevity? - Page 2 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #11 of 26 (permalink) Old 02-20-2017, 05:14 PM
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Not that my one example means anything otherwise...but having one of the higher mileage 2nd gens...I sold my car at 153k miles and did not have any wp or cooling problems since I bought it new in 2008.
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post #12 of 26 (permalink) Old 02-21-2017, 08:59 AM Thread Starter
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Originally Posted by Mz6GreyGhost View Post
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...
No, not at all. Took about a week. I was pretty pissed with having to shell out the money for this repair only a few weeks after buying the car. If it weren't for the engine pulling out part, I would have attempted to do the work myself.

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post #13 of 26 (permalink) Old 02-21-2017, 10:02 AM
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Originally Posted by dmperfection101 View Post
No, not at all. Took about a week. I was pretty pissed with having to shell out the money for this repair only a few weeks after buying the car. If it weren't for the engine pulling out part, I would have attempted to do the work myself.
How's it been besides the pump? Hoping it's been trouble-free...


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post #14 of 26 (permalink) Old 02-21-2017, 06:38 PM Thread Starter
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Originally Posted by Mz6GreyGhost View Post
How's it been besides the pump? Hoping it's been trouble-free...
Well, I'll keep you posted. Just three to four weeks after buying this car, this water pump situation arose. Other than that, just little quirks that others have complained about; lumbar cable popped on driver side and I'm looking into DIY fix using TSB; had a little issue with Bose navi head unit but got that fixed...everything else seems okay.

Silver lining; the inside of my engine is prestine. The shop that replaced the water pump gave me a few pictures of the insides.

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post #15 of 26 (permalink) Old 02-21-2017, 07:00 PM Thread Starter
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Originally Posted by Chuckie View Post
Not that my one example means anything otherwise...but having one of the higher mileage 2nd gens...I sold my car at 153k miles and did not have any wp or cooling problems since I bought it new in 2008.
Well, I'm hoping to get at least that many miles out of this car. I bought this car used with 104k and it's history looked pretty solid. I pulled Car Fax and called two dealers that consistently serviced this car. But, you never have any guarantees. I've personally maintained the wife's '02 Tahoe from showroom and we're pushing over 270k miles and no plans to retire it any time soon.

After scouring through many forums, Ford used this Duratec engine for Mazda6, CX-9, Fusion, Flex, Lincoln MKS and there are several reports of catastrophic water pump failure. And the design of this engine is ridiculous. The labor to pull the engine out to replace a $150 water pump is ludicrous.

Anyway, I appreciate having a few folks around to share my experience. It's still a gorgeous car. Just hope it doesn't turn into a money pit.

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post #16 of 26 (permalink) Old 02-22-2017, 02:05 AM
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Yeah, I generally assume if it's a V6 with FWD, then I'll need to double the wrench time for any engine work. Overall, the Duratecs are fairly reliable.
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post #17 of 26 (permalink) Old 03-04-2017, 09:52 PM
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I was starting to get interested in a V-6 Gen2. But, that water pump design is a bit disappointing. On the 3.0 Duratec, the water pump is outside the engine and driven by the serpentine belt. The internal water pump is reminiscent of old Dodge 3.5L V-6. When the water pump leaked, it filled the oil pan with coolant, usually taking the engine with it. I really don't like engine designs that cost $$$$ to replace a relatively inexpensive part.


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post #18 of 26 (permalink) Old 03-07-2017, 10:37 AM Thread Starter
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Originally Posted by Exocet View Post
I was starting to get interested in a V-6 Gen2. But, that water pump design is a bit disappointing. On the 3.0 Duratec, the water pump is outside the engine and driven by the serpentine belt. The internal water pump is reminiscent of old Dodge 3.5L V-6. When the water pump leaked, it filled the oil pan with coolant, usually taking the engine with it. I really don't like engine designs that cost $$$$ to replace a relatively inexpensive part.
I hear ya, but it's a hell of a lot of fun to drive!

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post #19 of 26 (permalink) Old 03-07-2017, 02:39 PM
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I hear ya, but it's a hell of a lot of fun to drive!
Indeed.

I wouldn't still have mine if it wasn't...
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post #20 of 26 (permalink) Old 10-04-2017, 11:45 AM
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Quote:
Originally Posted by dmperfection101 View Post
- 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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Kind of curious, your water pump failed a few weeks after buying the car but you were also inquiring about it 10 days before you reported that it failed... did the seller tell you it was bad?

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