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If anyone could help guide me on this one I would really appreciate it. I was driving home with the family last night when the "Low Coolant" light came on. I watched my tempeature and proceeded home. As I was within 1/4 mile of home the temp went way up to the redline. I filled it with coolant today and ran it to temperature, put the truck on jack stands, removed the lower cover and looked for the leak. It didn't leak initially until I shut the engine down. Then it decided to trickle out of the bottom of the engine. I looked closer and it seemed it was at the block. The best photo I could get is attached. Can anyone advise? The nearest Porsche dealer is a hour away!

The photo shows the leak just towards the rear of the oil drain plug at the bottom of the motor.



Edited by Loren
made image viewable
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Here is a relatively good schematic (picture) to identify at least where the major components on your engine (not sure if you have a turbo).

post-23707-1235331783_thumb.jpg (Click to Enlarge)

1. Intake Manifold

2. Air-injection pumps

NOTE: Turbo Engine

3. VarioCam

4. Duplex timing chain

5. Intake camshaft

6. Exhaust camshaft

7. Valve

8. Piston

9. Spark plug

10. Exhaust manifold

11. Turbocharger

NOTE: Turbo Only

12. Oil collector on turbocharger

13. Oil filter

14. Oil/collant heat exchanger

15. Air-conditioning compressor

16. Oil pump pick-up pipe

17. Water pump (obscured)

18. Ancillary drive belt

19. Throttle-valve tract (electronic throttle

Credit for picture/information: www.panix.com/~clay/cayenne/cayenne-engine.jpg

Bill :beer:

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My vehicle is a 2004 Cayenne S. I also thought the tubes, but the leak seems to be coming from the bottom of the engine. I know water (or coolant) will find its own flow but if I understand the plastic tube location right they are at the top of the engine under the intake. It just doesn't seem to be dripping from up top. Do I take off the manifold and check anyway? Is it impossible to have coolant leak from the location I photo'd? My guess is that only oil would leak from the lower block area.

Thanks for the engine photo!

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  • Admin
That's a tough one...I have no idea. I might suggest you PM RFM and get his advice on what it might be.

Please don't PM Moderators or Admins unless it is a last resort - others will never see the reply and advice.

One of the goals of the forum is to "share knowledge" ;) Thanks!

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That's a tough one...I have no idea. I might suggest you PM RFM and get his advice on what it might be.

Please don't PM Moderators or Admins unless it is a last resort - others will never see the reply and advice.

One of the goals of the forum is to "share knowledge" ;) Thanks!

Sorry Loren! Understood.

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hi there,

definatly the plastic coolant pipes

they are known for cracking or beaking on early 03/04 cayenne S models

the pipes are just under the inlet manifold,

dont drive the car!!

get them replaced

I had this happen to me. $700 "upgrade" kit and $1000 later, it is fixed. You won't be able to drive it for long with that leaking; it's pretty darn critical. And it could potentially be a destroyed engine if you get low on coolant! Just man up and get it fixed. I have pictures of the kit, before, during, and after on my Cayenne's open-heart surgery of this if you want.

Edited by 3ball
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The pics would be interesting to see. If you have been following the post Coolant pipe replacement you will find my replies to Ray. I will be following up on that post with my experience. I currently have the Cayenne in my garage with the intake removed (waiting on the parts). It is not a difficult job, just timely if you want to do it right. I have an occasional starter squeel so I will address that while I'm in the engine. I find it amazing that every issue I have with the Cayenne is related to a design flaw eg; (cardan shaft, A/C servo motors, coolant pipes, rear liftgate shocks etc). I would have NO problems with this vehicle otherwise.


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