22 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCoolant Leak - Happy 4th of July
Reported or suspected cause
water pump
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'water pump' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'water pump' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace pump' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
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Suspected cause · Original poster
The car has 75,000 miles on it, so if it was the original it would have been due.
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Suspected cause · Original poster
We are not sure if it was the original pump or a replacement done in the past.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
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Suspected cause · Original poster
Being replaced today - not what I wanted to hear, but if it was the original water pump it is just as well that it is getting replaced.
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Discussions that contain suggestions
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Suggestion · Original poster
It appears that I may have caught this in time before anything worse happened, beyond having to replace the pump.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
22 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261026T024951Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Here was what I saw this afternoon in my garage. Drove about ten miles this morning and parked it here. Could not tell from looking under the car where the leak was coming from. Others have suggested water pump....
Towed to my Indy shop this afternoon, will know Friday what is going on. Very not helpful to happen the day before a holiday, but at least it was home and not out of town. Sigh....
Great news you were at home though, I expect an easy fix. I want to share my oil leak maybe to make you feel better. A family member hit the curb at the end of the driveway at speed, BANG! Dislodged the oil plug...
That coolant leak looks to be more center to the engine and not left where the water pump is. Hopefully it is just the plastic coolant connector just to the right of the alternator. But, I don't understand...why would you not investigate the leak yourself? All you have to do is pull the air box snorkle off and you can see everything.
Sorry to hear that, and hope you both get your cars fixed soon.
Porsche has a minimalist skid plate (p/n 99610798100
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labeled heat shield at auto altanta), and LN Engineering (Bilt) has a heavy duty one called a sump guard plate.
Either of these might have helped avoid this, and might be worth picking up going forward.
I have the Porsche one and it gets a fair amount of scrapes at x74 ride height. I also have a LN/Bilt one, but when I went to install it, found the rear mounting to be a hassle, so didn't install it yet (but want to: it is much more substantial and has a larger coverage area and attaches to much sturdier mounting points).
https://www.suncoastparts.com/produc...hoCKa4QAvD_BwE
https://lnengineering.com/bilt-racin...ard-plate.html
Ouch! Count your blessings. This could have been a more serious situation. I've had coolant issues on these cars too. Ended up being a cracked expansion tank. I'm sure your indy will pressure test it for leaks and find the culprit. Hate you missed out on fun during the holiday.
Fair question. I looked underneath, and saw that the volume was more than just a simple connection that got loose. So figured it would require parts, called my indy and they had time to look at it on Friday and a tow truck was available yesterday afternoon. Also this is my daily driver, at least through August as my daughter has my wife's GTI in North Carolina for the summer. Since I had no parts, the quickest way to get it back on the road was to send it to my indy and hope that he can get the part(s) on Friday. Not ideal, but kind of my reality right now. Fortunately the old car has been very reliable.
Daryll
Thank you! Yes, disappointing as this is my class reunion celebration over the weekend and I would have liked to have had it. But there is a chance that I can get it back late Friday. If not it is not a big deal - I have repossessed our Jeep that my son drives and told him to get rides from friends today LOL.
Daryll
Update - it was the water pump. Being replaced today - not what I wanted to hear, but if it was the original water pump it is just as well that it is getting replaced. So - will be back on the road later this afternoon.
Oil change and console glove box hinge update being done today as well.
Daryll
Sorry - they tossed the part after showing it to me, and before I saw this. But the impeller blades were pretty worn, and more importantly the bore that the impeller rides in was out of round, causing the coolant leak. I would say it was worn out, but in a good way that was not a catastrophic failure.
Daryll
[QUOTE=Battery Guy;15954879]....and more importantly the bore that the impeller rides in was out of round, causing the coolant leak./QUOTE]
How do you fix that?
No - it was a Porsche factory water pump. We are not sure if it was the original pump or a replacement done in the past. The car has 75,000 miles on it, so if it was the original it would have been due. Wish I had taken a picture - the impeller was the plastic type - some of the vanes were worn smaller than the others. No sign of fracture.
I think Pt3 was questioning that if the "bore the impeller runs in is out of round" that would be a big issue as that cavity is in the actual engine block and if damaged can render the block unusable. I'm hoping that was not the issue causing the coolant leak.
OK, sorry - I did misunderstand the question. No, the engine block is fine - the bore that I was referring to was the water pump casting itself. You could see where the impeller shaft bore in the pump was worn. I am certainly no pump expert, but I would say that the wear was expected end of life for a spinning part running in a casting. The wear on the impeller blades was interesting to me. I need to run by the shop tomorrow - if they have not tossed the old pump I will take a picture.
Thanks!
Daryll
Aha! Yes that is how they fail due to age/wear and cause one heck of a water leak as you found out. Some abrasive wear on impeller blades from the compromised shaft "bearing" is not unexpected to me. That's the reason to not use the metal impeller as it will machine away inside the water cavity and possibly destroy the engine block.
Here is a pic of the bore where the impeller impacts the block when the bearings fail ,it breaks the blades of the plastic impeller, and if it has the metal impeller, gouges in the block. Neither is a good scenario..
When the plastic blades break off the impeller, they go into the engine. You should find out how much of the blades are missing. There is really nothing that can be done now, but could be helpfull in diagnosing a problem down the road if the blades pieces get stuck in the wrong place.
I just had this same problem on my sons Boxster, that's when I decided to make the screens in the picture . Of course it was too late, but better late than never, and may be useful down the road,or if another pump fails.
Was back at the shop today for a top-off of coolant (it burped over the weekend) and the pump was already gone. But I did see it - none of the impeller blades were broken off - they just showed wear. So hopefully any bits that are circulating in the cooling system are tiny particles. It appears that I may have caught this in time before anything worse happened, beyond having to replace the pump.
Daryll
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