beaconsfield

I purchased a 2005 CTT with 80k a few days ago. Today, it dumped coolant all over my driveway from the rear of the engine, and the coolant fault message appeared. Initially, I assumed that it must still have the plastic coolant pipes and that I must have very bad luck. However, I contacted the Porsche dealership that serviced the vehilce for the previous owner, and they confirmed that the coolant pipes were upgraded to the metal variety about 5k miles ago.

The car is currently on the way back to the dealership to be evaluated, but I'm curious as to whether anyone here has any thoughts on potential sources of sudden, major coolants leaks, given that the coolant pipes have already been upgraded? Thanks in advance for you help.

nkgosselin

There are some plastic T's on the turbos that fail. They should have been done when pipes done, but they are not always as it appears to be a pain in the neck. There is no metal substitute for them. They are probably the culprit. Search forum for more info on them.

hahnmgh63

What he said. My '06 CTTS had metal coolant lines installed also while it was on warranty and my crappy dealer can't pull up the service records to tell me whether or not the plastic T's were done or not?

User 4221

I saw a wrench at my local dealer build a T out of brass in order to permanently fix the poor design

deilenberger

A metal one would certainly be doable if someone could grab one that broke so measurements can be taken. There are barbed hose fittings commonly available (brass, and stainless-steel) and T fittings they could be screwed into. Chances are - it would also cost less then the Porsche part, and last about forever.

racer_65

I'm about to do the coolant pipe on my Cayenne S as a preventive measure. Does the T fitting only apply to the Turbo?

deilenberger

Yes. There are NO "T" fittings on the S. Cost me a bit over $10 to confirm this (bought what was supposed to be the "T" and received a plain hose.)

beaconsfield

Thanks for all of your responses. I'm still waiting on the diagnosis, however, it seems like the T fitting is the likely culprit. Assuming that's the case, do I need to replace the starter too due to potential damage from the coolant dump?

bigbuzuki

The starter gets wet when the coolant tubes in the v block crack. The t piece is located at the rear of the engine near the firewall. The t piece cracking should cause no damage to the starter.

John H

I had the same problem. It turned out to be a hose that was kinked and finally let go. Installation error for sure. Cost the same as replacing the tubes for labor (obviously only one new part) since they basically had to take it all apart to fix it right.