doridori

Dear all,

May I know the exact years and models of Cayenne that need the coolant pipe upgrade?

Does this kit (http://www.ebay.com/itm/Porsche-CAYE...tYRfMa&vxp=mtr) contains all the parts that are needed for the upgrade?

Thanks

v10rick

As it states in the e bay listing, 2003-2006.

While the intake is off change out the thermostat and water pump, both prone to fail around 40K mi.

If the starter growls immediately after start up replace it as well.

deilenberger

https://rennlist.com/forums/porsche-...his-first.html

If you check the listing on eBay that you posted - the compatibility list at the bottom appears accurate. It only applies to V8 engine cars.

It looks as if it contains most of the major items needed to do the job, I'd plan on new Porsche coolant and perhaps some replacement hose clamps.

It also lists - but does not show "Cooling Hose Connector x 1" That's a large hose connecting the two parts of the single pipe together (it's in 2 pieces so you can get it in place) - and that WILL require 2 large hose clamps.

If you go to a Porsche on-line parts catalog they list the kit and give an exploded view of it - and list all the parts.

FWIW - when I sold my '06 S at 85,000 miles - it still had the original thermostat and water pump.. so some may, but not all. It also had the original starter.

deilenberger

BTW - Porsche Cayenne 4.5 V8 10 Piece Aluminum Coolant Pipe Upgrade Kit 2003-2006 http://r.ebay.com/dnm2Ri - has everything needed except the coolant and isn't priced much different than the one you found.

Wisconsin Joe

Yup. That one has the short rubber hose and clamps, along with the rear triple clamp.
Not entirely sure that the triple clamp needs to be replaced, but it's a good idea to do it. It's made out of the same plastic and is likely rather brittle by now.

And neither of the links in this thread include the "Coolant T" that the turbos have.

That should be replaced at the same time as the pipes. There's good info on it in the "Coolant Pipe" sticky thread.

doridori

My Porsche mechanic told me that from year 2006 and up, Porsche has already used aluminum / metal for the coolant pipe (except for Turbo model). So, no coolant pipe upgrade needed for year 2006 and up (except Turbo). Is that correct?

Andy E.

Not so. Porsche has always and continues to use polymer-based coolant tubes through the 955 (2003-2007), 957 (2008-2010) and 958 (2011->) Cayenne normally-aspirated and turbocharged V8 engines.

The aluminum tubes are a retrofit kit that Porsche introduced in order to alleviate the inherent failures with their initial coolant pipe design.

For the 957/958 4.8 V8, the polymer tubes were re-engineered and, to the best of my knowledge, have no reported failures.

deilenberger

Starting in the 2008 model - there are revised coolant pipes - still plastic - but not prone to exploding like the original ones did. So no coolant update is needed for 2008+ models. The 2006 model STILL had the explody plastic pipes - so if you own, or are looking at a 2006 - you have to determine if they have been corrected.

Your mechanic was almost right, or you misunderstood what he told you.

dasams

The first gen Cayennes were sold in the US as model yr 2003-2006 and the pipes should be replaced. There was no model yr 2007 in the US market. 2008 and onward don't need the replacement pipes.

My 2006 CS had the pipes replaced under warranty a week before the orig 4 yr warranty was to expire. Be nice to your SA and he or she will take care of you

doridori

Hi Dasams,

But if I am going to buy a used one now (2003-2006), there is no way that the dealer will take care of the coolant pipe problem for me under warranty or for free, correct?

deilenberger

Correct. It's on you.

Andy E.

Don, whatever happened to the class-action suit against PCNA regarding the coolant pipes? Would this mean that Dasams cannot make a claim as he's past the deadline for responding?

deilenberger

That's about it. There were some time limits in the settlement of the class action, and to make a claim if the pipes hadn't been done, there were requirements of having it done at a dealership, with all or part of the bill forgiven. I don't recall the exact details, but I'm sure a quick Google will turn it up.

nrddct

so I'm wondering if you guys with 2008+ cayennes end up changing out the pipes anyways for piece of mind? Or know of the interval change of these pipes?

Currently I have about 115k on my 2009 gts

Wisconsin Joe

It's a different design. The "pipes" are much, much more reliable. There is a glued in fitting in the water distributor near the back that may (or may not) fail at some point.

The pipes in a 955 will fail at some point.

And as far as getting the dealer or Porsche to pay for it on a 955...

Not gonna happen. Warranty ran out a long, long time ago. Extended warranties too. Many "aftermarket" warranties expressly exclude "Plastic hoses and pipes", so you are not getting it covered that way.

The class action lawsuit got it covered or reimbursed for some owners, but there were a lot of restrictions and exclusions on that. Plus the time frame for filing a claim ran out a couple years ago.

On the positive side, just about all of the 955s are now old enough that the pipes have been replaced. Either proactively or because they blew. I would think that the number of 955s running original pipes is pretty low.