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2002 Porsche 911 (996) Oil Cooler Leak

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCH2002 Porsche 911 (996) Oil Cooler Leak

Leading reported evidence

Replace ims

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No successful repair reported for this finding.

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Suggestion · Original poster

So my friend and I started to the process of changing the IMS to the Solution and noticed while we were removing the second from the top left bolt of the transmission (facing the rear of the car) that there was a lot of corrosion.

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2002 Porsche 911 (996) Oil Cooler Leak
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Leading evidence: 'Replace ims' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace ims' (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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Replace ims

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

So my friend and I started to the process of changing the IMS to the Solution and noticed while we were removing the second from the top left bolt of the transmission (facing the rear of the car) that there was a lot of corrosion.

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2002 Porsche 911 (996) Oil Cooler Leak
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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.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

Basic Info 2002 Porsche 911 Carrera Coupe C2 Manual 6 speed US So my friend and I started to the process of changing the IMS to the Solution and noticed while we were removing the second from the top left bolt of the transmission (facing the rear of the car) that there was a lot of corrosion. The bolt was very difficult to get out and actually took some of the threads with it. Once we removed the tranny we saw inside the housing of the tranny and the crank crystallized particles. It was also around the bolt that was tough to get out. After a closer look it appeared that the oil cooler had leaked antifreeze at some point which over time, seeped around the tranny/crank housing (did not enter the tranny though). It (the flakes) also was near where the cooler mount to the crank. This led us to believe that possibly the oil cooler is bad or going bad or possibly the oil cooler o-rings. Any ideas or comments? This is where I plan on getting the replacement parts . I can post some pics even if it would help.

POST 2Original post

Do a search before you start tearing it apart. That area catches water and corrodes. It is normal. Not the oil cooler. Look at ~35 seconds. Corrosion in that area is common. You Tube Here You Tube

POST 3Original post

Agree with Frank but I'm still trying to understand why.

POST 4 / ORIGINAL POSTEROriginal post

Thank you for the videos. That's exactly what mine looks like as well. So this is normal? Just curious how moisture would get trapped there? Thanks so much though.

POST 5Original post

My theory is that water sits on the flat ledge in the casting next to the cooler and works on the trans/engine seam until it eventually wicks into that void. When the engine gets hot it turns to steam and further corrodes the cavity walls on the way out. Rinse repeat and you have a mess. Winter driven cars would have the added bonus of salt added to the mix.

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