Tips on Replacing The Porsche Cayenne Coolant Ts

It finally happened, the plastic coolant Ts failed on me and leaked coolant all over the place. In this video, I talk about what tools and parts I used in order to replace the coolant T's. Since the original coolant Ts are made of plastic, its wise to replace them with metal parts. The metal parts will ensure the repair will last the life of the vehicle. You can get the metal coolant Ts from the website below. Don't forget to check out my other DIY maintenance videos for the Porsche Cayenne.
My other Cayenne DIY videos can be found here: bit.ly/2NvBE1n
www.jagsthatrun.com/Pages/Part...
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[@DIYDanCars]

My other Cayenne DIY videos can be found here: bit.ly/2NvBE1n www.jagsthatrun.com/Pages/Parts_TPI-TBI_Brass-Tees.html

[@alpinewhite]

JTR called me after I ordered the tees asking for permission to replace the 1" / 3/4" tee to 1" / 5/8" tee since it fits better. They knew exactly why I was ordering them. They said "You got this info from a KZbin video, right?". I said "yes". They knew exactly that I was buying them for a Cayenne. Lol.

[@DIYDanCars]

My T's fit perfectly as evident in the video. As outlined in the video the sizes I went with are -- One tee is 3/4" on all the three inlets and the other tee is 3/4" on the top inlet and the other two horizontal inlets are 1"

[@MobileBrakeRepair]

Just finished the coolant T's on a 2005 Cayenne turbo. Your right about the hose bonding to the metal pipes. It's almost like the rubber hose was melted onto the metal pipe. Cable hose clamp pliers and silicone brake lube (syl-glide) was a "must have" for the installation.

[@jorageakajoesgarage5521]

Hi Dan, Thank you for this video. It helps me a lot and able to work on my 2006 Turbo S! Saves me tons of money on the maintenance! Thank you again!

[@DIYDanCars]

No problem! Happy to help!

[@roberttomlinson5455]

Great Video! I had the exact problem with my Cayenne Turbo S, and what a mission to have the replacement T installed.

[@johnnywong8119]

good video for all the cayenne owner. help us a lot.big thanks

[@DIYDanCars]

No problem Johnny! Good luck with the job!

[@jorageakajoesgarage5521]

Hi Dan. Any recommendation what alternate means removing vacuum vent line on air manifold the one in the back? There are 2 clips to be able remove it but one clip was broken off ( probably by previous work done). Maybe there is a special tool for this that you can recommend. Thanks

[@buddy_b8735]

is the longer thinner hose that runs below from the secondary T accessible from underneath? I have everything torn apart and cant' currently get under. If I know it's accessible from the bottom, I'll put all the new parts on and save that connection for last.

[@BostonReedtech]

Porsche Cayenne Turbo Pair Set of 2 Vent Line Breather Hose. This connect to that part you have broken? 2008 Turbo

[@cyberlynx5969]

good video. and link for the T's. Helped me out a lot. Thanks

[@DIYDanCars]

+cyberlynx5969 No problem!

[@dannyagl]

I love the applause, lol. Thanks a lot

[@alexwpalm]

Hi Dan. I'm in the midst of this project now, among other things (i.e. valve cover gasket which is really helping with access). I see no mention of emptying the coolant or bleeding after installing the new metal Tees, which I received today. Is tending to the coolant system at all necessary? I would imagine bleeding, no?

[@DIYDanCars]

Hi Alex, the cooling system in a Cayenne is self burping. You will have to top off the coolant after replacing the Ts. After topping off the coolant drive the car and keep an eye on the coolant tank because it will probably need to be topped off again after it burps some air out of the system.

[@alexwpalm]

@@DIYDanCars Outstanding! Thanks. Ps, you're right...this sucks!

[@marthepedersen1454]

thank you for the video, how long do thing it took to do it?

[@DIYDanCars]

It took me about 4 hours to complete this job. It wasn't easy.

[@aaronhatz]

Dan, thanks for the great informative video. I'm getting ready to change these tees out this weekend and was wondering if you can tell me what the sizes of the coolant tees are. I can clearly see the 3/4" size in the video but having trouble seeing the other side. Also, my vacuum line at the back of the block has a broken tee exactly like yours in the video. Did you find a metal replacement for that one too? And if so what size? (My vacuum tee was so crumbled that it came out in pieces so I can't tell the sizes. Any help is much appreciated... Thanks

[@DIYDanCars]

+aaronhatz The "T" that doesn't have anything written on it means it's the same size as the opposite side. For example if one side has 3/4" than it's the same size on the opposite side. I don't remember what size the plastic vacuum T is, sorry. I was unable to find a metal T and ended up buying a variety back at the autoparts store and that worked. Good luck and let me know how it goes!

[@roxiecujo]

Hi Dan, I'm in the middle of this repair as I type. I have the T's in and wondering about plastic vacuum T and what the top of the T attaches to? I have oil spray coming out of it so it seems to be a balance line between the 2 sides of the motor. I do not see any line that would hook up to this T? Thanks!

[@DIYDanCars]

One tee is 3/4" on all the three inlets and the other tee is 3/4" on the top inlet and the other two horizontal inlets are 1". I couldn't find a metal replacement for the T on the back of the firewall so I used a new plastic one from Harbor Freight -- sorry don't remember the size I used. My plastic vacuum T came out the same way. I don't know why German car companies are so infatuated with cheap plastic but for some reason they are... Hope this helps! Good luck!

[@DIYDanCars]

I don't remember what that plastic T connected to as I did this job almost 2 years ago now. I thought it went up to the intake manifold?

[@roxiecujo]

DIY Dan thanks for the quick response! I figured it out. it was the left and right bank vent line. thanks again, your videos rock! Frank

[@robertrayes8173]

Thanks for the link but what is the exact one you purchased because there is a lot to choose from

[@DIYDanCars]

At the end of the video I show you which ones to purchase.

[@danielver4484]

Hey Dan what about the brittle vacuum t that you mentioned, were you able to replace it with metal part? Do you have the link for that? thanks

[@DIYDanCars]

No, I could never find a metal vacuum T so I had to use plastic.

[@danielver4484]

Thanks Dan

[@mikaelstigberg5992]

Hello Dan, very good video, I see that your big water pipes seems to be change or have porsche change from 2005 modell, because i have Heard that also whas a big problem with early Cayenne,

[@DIYDanCars]

+mikael stigberg Hi Mikael, yes, my Cayenne has already been upgraded to the metal coolant pipes. Unfortunately Porsche does not make a set of metal "coolant T's" so these parts will fail unless upgraded to metal. If your plastic coolant pipes have failed, now is a good time to upgrade to metal coolant T's as well. Hope this helps!

[@cad-tastrophe3012]

+DIY Dan Do you have a parts number for those metal T's from JTR, or did you order by letting them know you needed 3/4 all around? I will be needing to do this upgrade ASAP. Thanks in advance.

[@DIYDanCars]

+matt powell Matt, there are not any part numbers, you tell them the sizes you need in aluminum. My video at 8:37 shows what sizes you need. One of the T's is 3/4" all the way around where the other T is 3/4" on the "I" part and the other two outlets are 1" on either side. Hope this clarifies what you need.

[@cad-tastrophe3012]

thanks buddy...I was having a hard time reading the markings on the ends. Please keep posting vids every chance you get on that CTT.

[@DIYDanCars]

+matt powell No problem! Good luck!

[@Pollux95630]

I can attest to the vent lines being brittle. Both of mine were starting to crack and leak coolant when engine was hot to the point they filled up the valley under intake and had coolant running out of the transmission bell housing holes. When I discovered it and touched one it crumbled apart.

[@DIYDanCars]

Using plastic for an application like this is just stupid. I'm still shaking my head as to why Porsche decided to do this. I guess you don't become the most profitable car company in the world by building quality cars. :)

[@Pollux95630]

DIY Dan they all do it...but seems German plastic doesn’t have the same durability as their Japanese and domestic counterparts. My wife’s ‘07 Dodge Caravan has crazy amount of plastic under the hood that is obviously way more durable than Porsche plastic.

[@12masterr]

hello,I'm a little confused about the other plastic t (vacuum t), so you replaced both coolant t pipes with metal, and what about the one on top that broke? thanks

[@DIYDanCars]

For the vacuum T on the back of the firewall, I couldn't find one made of metal, so I had to use plastic.

[@12masterr]

@@DIYDanCars ah ok,thanks. also, you got the metal t's ,but I assume you have to buy new rubber hoses to connect them? since you mentioned that you have to cut the old ones out!. I'm upgrading the top coolant pipes and don't want to take everything apart again in 2 months for the t"s!

[@DIYDanCars]

If you buy the plastic T's from Porsche you will get the new hoses with them. Simply take the hose assemblies apart and replace the included plastic T's with the metal T's. Hope this helps.

[@12masterr]

@@DIYDanCars thanks! It helped

[@GB-hu5mu]

great job. I have the same issue on 200 k km. A month ago expansion tank. Porsche obviously want us to buy brand new cars.

[@DIYDanCars]

+grzegorz budziński Yea, Porsche quality isn't what it use to be, that's for sure!

[@rush4ever1]

So these are the T's? Not the overall coolant pipes that need replacing also? Want to know where to look to see if my used turbo has been upgraded or not.

[@DIYDanCars]

Correct these are the "coolant T's" that everyone talks about. The coolant pipes are under the intake manifold and the coolant T's are behind the engine near the firewall on the driver side.

[@rush4ever1]

DIY Dan in reply to what you said, so both of these commonly need to be replaced? I had only known about the pipes not the T's have you replaced both of yours? At the same time? 50 something thousand miles you had when you did the T's?

[@DIYDanCars]

Yes, if the plastic coolant pipes have failed more than likely the plastic coolant T's are not far behind. Only the Cayenne Turbo has coolant T's. Thankfully my coolant pipes were already upgraded to metal, but the coolant T's were original and failed in the 50k mile range. I had a set of T's made out of metal so this failure will never happen again.

[@flud78]

This is making me second guess looking at buying a turbo S now :( . How long of a job would you say this is? Too bad you didn't have a start to finish DIY. I'm a little bit of a DIY but I'd be nervous working on an in depth looking project like this.

[@DIYDanCars]

I did the water pump at the same time so it's really hard to give a start to finish time. You do have to remove the intake manifold, driver side air pump, and a few other hoses and such. Most of your time will be spent trying to reach the coolant T clamps to get them off. I probably have around 4-5 hours in the coolant T replacement. The key is not to rush the job and take your time. If reliability is key a Cayenne is probably not the best vehicle for you. Even though my Cayenne hasn't been the most reliable car I have ever owned, it definitely is one of the most enjoyable. Good luck in the hunt!

[@flud78]

+DIY Dan thanks for the tip. Can you do me a favor and write a list of ALL of the maintenance that you've done so far? And any online resources I could research for more information (forums). Thanks again Dan

[@748Carbon]

Do the non turbo, S type motor have the T-connection on the back? My is 2006 S

[@DIYDanCars]

No. Only turbo models have "coolant Ts". If you have a Cayenne S you can sleep well tonight. ;)

[@748Carbon]

DIY Dan thank you. I was just about order that part

[@tracman5213]

@@DIYDanCars thanks for the clarification as I have the cayenne S

[@dxmcghee]

I’m slightly confused. What size do I need?

[@DIYDanCars]

One tee is 3/4" on all the three inlets and the other tee is 3/4" on the top inlet and the other two horizontal inlets are 1". The "T" that doesn't have anything written on it means it's the same size as the opposite side. For example if one side has 3/4" than it's the same size on the opposite side.

[@rafaelchavez9424]

i went to lowes baught the 3 fittings for $20. shark bite brand. they are brass

[@DIYDanCars]

That's fine. Just make sure the coolant you decide to use can protect your brass Ts from corrosion. Unfortunately most modern coolants can't protect brass from corrosion.

[@BostonReedtech]

Hi at 4:39 in video I think that is what I have. What size T did you get from www.jagsthatrun.com/Pages/Parts_TPI-TBI_Brass-Tees.html

[@DIYDanCars]

Jeff, for that the plastic T that broke on the firewall I couldn't find one made out of metal so I went to my local auto parts store and purchased a variety pack of plastic vacuum T's. I can't remember what size I used specifically but the variety pack of vacuum T's will have what you need. Hope this helps.

[@jjbtheflyguy]

Are these pipes only on the turbo engine?

[@DIYDanCars]

Correct.

[@jjbtheflyguy]

@@DIYDanCars Thank God I have a in a NA your videos are super dope in their really professional and organized I hope you’re getting paid for this

[@DIYDanCars]

@@jjbtheflyguy Thanks, Jalen!

[@maxe.1204]

So you had to buy new hose sets from Porsche, remove the plastic T's and put back together with alum. T's. Or did you reuse the hoses?

[@DIYDanCars]

When you order the new hoses they come with the plastic T's. I removed the plastic T's from the hoses and had them replaced with the custom aluminum T's. I would recommend if you go through all the trouble of replacing the plastic T's, that you not cut corners and also replace the hoses at the same time. Good luck!

[@maxe.1204]

Thanks i ordered the new hoses (both T's, 955-106-323-50 948-106-035-51) can you share how you went about removing the factory clamps of that one T that are non-removable? Dremel? if so what type of bit did you use so you don't ruin the hose itself. Really appreciate the video and sharing with us.

[@DIYDanCars]

No problem! I used a dremel with a small cutting disk and was very careful.

[@maxe.1204]

Thanks Dan!

[@gtrguyinaz]

Wow, What stupid f... ups are in the future for my Cayenne turbo 2016...

[@navarrouk3487]

bmw is king in using plastics on their engines, now is porsche! damn. what is wrong with them?

[@DIYDanCars]

+Alan Navarro that was exactly my thought too! Actually, the idler pulleys looked identical to the idler pulleys found on our old 740IL. I'm about 90% sure Porsche and BMW are using the same supplier.

[@tkrap]

planned obsolescence