What technically causes waterpumps to fail? - Page 6 - Pontiac Solstice Forum
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post #76 of 89 (permalink) Old 06-17-2019, 08:33 PM
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So is the water pump failure more prevalent in early cars or are all 2006, 07 & 08 cars have the same potential? You guys have me nervous, my 07 GXP just turned over 27K miles.

Not sure if it has been flushed since I just bought it from the 2nd owner.

Last edited by Mike Trom; 06-18-2019 at 05:25 AM.
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post #77 of 89 (permalink) Old 06-17-2019, 09:58 PM
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Have you done a flush Mike?
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post #78 of 89 (permalink) Old 06-18-2019, 04:45 AM Thread Starter
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Originally Posted by The_Ghost View Post
At last check there have been 4 or 5 supersessions of different designs for our pumps....
I thought I remembered reading that our WP had gone through changes, that's why I was surprised to see that it didn't look like the part number had ever changed. But doesn't GM changed the part number or isn't it superseded by a new part number after each change or if they've switched to a new vendor?

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post #79 of 89 (permalink) Old 06-18-2019, 05:26 AM
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Originally Posted by ChopTop View Post
I thought I remembered reading that our WP had gone through changes, that's why I was surprised to see that it didn't look like the part number had ever changed. But doesn't GM changed the part number or isn't it superseded by a new part number after each change or if they've switched to a new vendor?
I can't state definitively how GM handles engineering changes but in most cases manufacturers will only change the engineering level or part number if there is a compatibility conflict with previous generations or some other major reason to differentiate between generations. (Recall, for example.) A "running change" will likely not cause a change in part number.
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post #80 of 89 (permalink) Old 06-18-2019, 05:27 AM
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Have you done a flush Mike?
Not sure since I just got the car, I will have to assume it has not. Should I take it to the dealer to have that done?
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post #81 of 89 (permalink) Old 06-18-2019, 07:25 AM
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Mike i take mine to the dealer for a flush as i can't wrench were i live but there are lots of folks on the site that do their own & with the correct knowledge on doing it. I do little wrenching today & my knowledge is limited.
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post #82 of 89 (permalink) Old 06-18-2019, 11:27 AM
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If the statement that its gear loading that is causing the failure, changing the coolant will have little impact on its failure. Or am I missing something?

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post #83 of 89 (permalink) Old 06-18-2019, 12:45 PM
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If the statement that its gear loading that is causing the failure, changing the coolant will have little impact on its failure. Or am I missing something?
In my opinion that is correct. I lean more and more toward thinking that the problem is a batch of near-out-of-spec parts that we just happened to be in the middle of.

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post #84 of 89 (permalink) Old 06-19-2019, 09:58 AM
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In my opinion that is correct. I lean more and more toward thinking that the problem is a batch of near-out-of-spec parts that we just happened to be in the middle of.
Had my eyes opened years ago to the folly of upper and lower dimensional specifications. If you've designed to one specific size as "best" and the allow "plus" and "minus" from that target, you imply that the component that is just barely inside the limits is just as good as the one in the center of the limits.

It's like saying the "D" student is just as good as the "A" student because they both pass the test. If there were a section of production run "just within" specification it could likely have resulted in a rash of early failures.

Or, it could be we still don't know the true cause . . .

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post #85 of 89 (permalink) Old 06-24-2019, 02:36 PM
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As I have learned in my role as a Quality Inspector, meeting spec doesn't mean the part is worth a damn.

Driving and working on a Sly 2008 Solstice GXP 5spd 260/260, and the worst-built 2012 LS3 Camaro 1SS to escape from Oshawa.

Gone but not forgotten:
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Stored and needing to part ways with a 1970 Skylark Custom convertible I have owned since 1989 and turned into a GS455 clone. 462 with 7/8 primary headers, adjustable roller rockers, TA Performance Stage 1 aluminum heads, auto, Chevy 12 bolt, 3.31:1. Sadly a project car now but a driver from '89 to '06.
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post #86 of 89 (permalink) Old 06-24-2019, 04:34 PM
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As I have learned in my role as a Quality Inspector, meeting spec doesn't mean the part is worth a damn.
As I was quick to point out when I managed a product design department, I know where 90% of the specifications come from and the sun doesn't shine very brightly there.

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post #87 of 89 (permalink) Old 06-24-2019, 07:23 PM
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Well, where do I start. My 09 Solstice coupe ( 54,000 miles) while at the Nationals in Corning, NY the water pump decided to fail. I was able to make it to a GM Dealership about 15 miles away. After filling the coolant reservoir again, it was just about out of coolant. After 3 days in the shop, it was fixed ( for the second time). They said, the first water pump they installed was defected. Lucky for me, I had a BG warranty on the cooling system, that covers, water pump, radiator, and heater core. The warranty covered about 85% of the total cost. I also, have this warranty on my 06 Solstice (44,000 miles). And, the new water pump is under warranty for 2 years, parts and labor.
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post #88 of 89 (permalink) Old 06-24-2019, 08:53 PM
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Originally Posted by D-ROD View Post
Well, where do I start. My 09 Solstice coupe ( 54,000 miles) while at the Nationals in Corning, NY the water pump decided to fail. I was able to make it to a GM Dealership about 15 miles away. After filling the coolant reservoir again, it was just about out of coolant. After 3 days in the shop, it was fixed ( for the second time). They said, the first water pump they installed was defected. Lucky for me, I had a BG warranty on the cooling system, that covers, water pump, radiator, and heater core. The warranty covered about 85% of the total cost. I also, have this warranty on my 06 Solstice (44,000 miles). And, the new water pump is under warranty for 2 years, parts and labor.
Sorry to hear that, good that you had the warranty - it's probably paid for itself with that!

As for the failure though, that suggests the bad batch theory may not be the reason, if you have an 09 that failed so soon. Dammit. I was hoping that maybe my 08 would be free and clear

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post #89 of 89 (permalink) Old 06-25-2019, 04:14 PM
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As I was quick to point out when I managed a product design department, I know where 90% of the specifications come from and the sun doesn't shine very brightly there.
Ain't this the truth though. I have looked through some prints that are obviously updated in order to put a band-aid on a band-aid. It would cost the same amount of money to just fix it right, but the spec says....
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Gone but not forgotten:
2007 Solstice GXP 5 speed 290/340

Stored and needing to part ways with a 1970 Skylark Custom convertible I have owned since 1989 and turned into a GS455 clone. 462 with 7/8 primary headers, adjustable roller rockers, TA Performance Stage 1 aluminum heads, auto, Chevy 12 bolt, 3.31:1. Sadly a project car now but a driver from '89 to '06.
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