fullymatted.
Back to search
Rennlist

Anti Freeze Leak?

Add to repair workspace
Open repair workspace
Original source
21 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHAnti Freeze Leak?

Reported or suspected cause

most likely the expansion tank

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context

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.

Reported cause

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank.

Anti Freeze Leak?
Frequently discussed work

Replace aos easier

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

Mine was already replaced when I got the car though, I just removed it to make changing the AOS easier.

Anti Freeze Leak?
Read full discussion summary

Leading evidence: 'most likely the expansion tank' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'most likely the expansion tank' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace aos easier' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 21 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace tank and cap - all better now

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Replaced the Tank and Cap - All better now.

Anti Freeze Leak?

expansion tank

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

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
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.

Suspected cause

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank.

Anti Freeze Leak?

problem

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

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
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.

Suspected cause

Your reservoir is probably the problem.

Anti Freeze Leak?

Replace aos easier

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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 contain suggestions
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.

Suggestion

Mine was already replaced when I got the car though, I just removed it to make changing the AOS easier.

Anti Freeze Leak?
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace aos easier

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

Mine was already replaced when I got the car though, I just removed it to make changing the AOS easier.

Anti Freeze Leak?

Replace stereo install, and aluminum pedals

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion · Original poster

I do small things like the oil pressure sending unit, oil changes, stereo install, and aluminum pedals.

Anti Freeze Leak?

Replace tank and cap

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

My dealer charged me like $700.00 to replace the tank and cap.

Anti Freeze Leak?

Replace tank and cap - all better now

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
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.

Performed · outcome unconfirmed · Original poster

Replaced the Tank and Cap - All better now.

Anti Freeze Leak?

Test done

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.

Suggestion

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank.

Anti Freeze Leak?
Reported and suspected causes (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

most likely the expansion tank

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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.

Reported cause

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank.

Anti Freeze Leak?

expansion tank

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.

Suspected cause

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank.

Anti Freeze Leak?

problem

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.

Suspected cause

Your reservoir is probably the problem.

Anti Freeze Leak?
Coverage and how to read this overview

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.

21 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.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

Nice to hear the problem is solved.

No unique explicit quoted action; no causal link assigned

Generation: 20261027T150039Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Parked the car last night and when I got up I saw a puddle under the left muffler. Went to work leaving her in the garage. When I came home I look at her and took the below pictures. I see that a hose clamp below the reserve is corroded yellow. I have searched and it seems to be a common problem with the reserve or hoses. no warning lights on the dash. The temp and oil pressure looked normal. What do you guys think? Is this a DIY? 2002 C2 photo(1).jpg photo(2).JPG photo(3).jpg photo(4).jpg

POST 2Original post

From where the leak is I would guess its the plastic coolant expansion tank. Easy DIY on a 2002. @$112.00.

POST 3Original post

I agree, coolant tanks are a know problem with leaks due to cracks and old age. Is yours yellowed?

POST 4Original post

From that area best guess is expansion tank. Is yours white, or yellowing in color? Also, which number cap do you have? I think the latest cap is 04, so it could be that, but my best guess would be expansion tank. GL, DS

POST 5 / ORIGINAL POSTEROriginal post

Yes it is yellow. [IMG] [/IMG] [IMG] [/IMG] Thanks for the help.

POST 6Original post

Old cap, old tank. The tank cracking is a very common problem, and the caps going out is also common. You can try the cap first (path of least resistance) but your tank is yellowing pretty bad, so I would believe it has probably started a small crack. Either way, you will want to get addressed definitively before driving again, as you don't want the tank to have a large blow out and have the entire system lose coolant while you are driving it...that would suck. Also looks like you still have old coolant (which would make sense) the new Porsche coolant is a pink/orange color. GL, DS

POST 7Original post

Have a pressure test done to pinpoint the cause/source of the leak..and as above members have already suggested, culprit is most likely the expansion tank. I just had this R/R done very recently and opted to also include (in addition to new coolant reservoir): new t-stat, serpentine belt and WP.

POST 8Original post

The caps are up to iteration #xxx... 447. 04 now. Yours ends in #xxx...447.00, that is the original cap #. Your reservoir is probably the problem. It starts out white but sitting right above the muffler it gets toasty brown and brittle. I think the 02 has the larger tank, if so it is still a DIY but more of a pain in the butt. You might have to loosen the rear engine mounts and drop the engine down a little to get clearance.

POST 9Original post

I would try a DYI on this one. My dealer charged me like $700.00 to replace the tank and cap. Mine looked just like the photo here and leaked just like these attached photos........It was a cracked expansion tank at fault.

POST 10 / ORIGINAL POSTEROriginal post

Thanks everyone. It was a cracked expansion tank at fault. Replaced the Tank and Cap - All better now. Took it to my Indy since I was worried about dropping the motor.

POST 13Original post

Glad you got it fixed but you could have had fun DIY!

POST 14Original post

Changing out the coolant tank is not fun, IMHO! $700 seems way steep to me, but I would have paid $300, if I needed to. Mine was already replaced when I got the car though, I just removed it to make changing the AOS easier.

POST 15Original post

IMO anytime spent working on your Porsche is fun compared to be being at work. May not apply to a DD though.

POST 16 / ORIGINAL POSTEROriginal post

Quotes source post: 10217566

Parts were at 150 and the labor was 300.00. I did not think the cost was that bad. Yes, I would have love to try to tackle it on my own but when your limited to tools and no jack sometimes it is just easier to pay someone. What really scared me was dropping the engine a few inches. I do small things like the oil pressure sending unit, oil changes, stereo install, and aluminum pedals. MAybe one day I will graduate to bigger DIY items. John

POST 17Original post

Fair prices, you made the right choice. It's a crappy job.

POST 18Original post

As long as your enjoying it. Your Porsche should only be a stress taker, not maker.

POST 19Original post

Quotes source post: 10218073

+100 Studied the DIY write-ups/watched the videos about WP/ET R/R and felt OK to tackle the job. But when my indie said $580 TOTAL (pressure test, install new tank, WP, belt and t-stat and bleed), I whipped out my plastic and asked where do I sign P.S. Culprit on mine was also a crack on the backside (facing the sheetmetal) of the coolant reservoir, impossible to see on visual inspection

POST 21Original post

Quotes source post: 10219179

I was all set to get the OTHER t-stat but my indy insisted staying with OEM...actually hinted at refusing to do the install if I went with the low-temp alternative (something about the ECU works best with OEM) Link to his shop: http://www.tomsforeignautohouse.com/

This is a source reference. Confirm exact model applicability in the original material.