Coolant pipes A-Z.
06-27-2011, 11:51 AM
#227
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What's the best place in the engine to see if coolant has leaked or should I just look under the Cayenne or check the coolant level? My 04 Turbo was a CPO at 65k mi so it was likely under warranty thru 100k mi, I'd think. It was in TX north of me for two years of scorching hot summers. Seems the pipes likely would have gone by now. I wish there was some way to access service records from the dealer now that I own it. There is just one major dealer where this vehicle lived so I'd think it went there.....
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
06-28-2011, 01:56 AM
#228
06-28-2011, 01:30 PM
#229
Moderator !x4
If you find you're adding coolant on a regular basis - chances are good the O rings on the pipes have started to leak. Not all of the failures are exploding pipes.. If the system is working as designed (ie - not leaking) you should never have to add coolant.
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
06-28-2011, 04:03 PM
#230
Rennlist Member
If you find you're adding coolant on a regular basis - chances are good the O rings on the pipes have started to leak. Not all of the failures are exploding pipes.. If the system is working as designed (ie - not leaking) you should never have to add coolant.
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
07-02-2011, 07:51 PM
#231
Will start checking the coolant level.....I'd be amazed if the PO didn't have a failure in this TX heat by 100k mi while it was under CPO. that said, anything is entirely possible.
07-04-2011, 11:08 AM
#232
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The coolant Porsche uses is interesting stuff. A few drops of it dried on the black plastic cowl under the windshield while we were doing the job (or perhaps when I took the reservoir cap off to check the level) - and it dries as hard as a rock.. when I finally decided to scrape it off - it needed my pocketknife to scrape off, and I could see little crystaline formations in it - sort of like rock-salt. That probably explains what happens to the torque converter seal if the coolant is allowed to leak for any period of time..
07-05-2011, 09:01 PM
#233
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Cayenne v8 Coolant pipe PSM
2004 Cayenne V8 S 55000 miles. I have today replaced the plastic pipes with the Porsche kit- had a small coolant leak and thought best to change them.. Put it all back together but now have another fault. Engine was difficult to start and kept stalling. Suddenly the PSM Warning appeared 'Workshop". Engine now just about runs but missing, poor irregular tickover- running like a dog. Warning on PSM still on screen. I took the inlet manifold off again, rechecked all connections, put it back on- just the same. I did disconnect the rear battery prior to starting work but didn't disconnect secondary. Also removed starter motor and cleaned gear- coolant residue over it.
ANY BRIGHT IDEAS?
ANY BRIGHT IDEAS?
07-06-2011, 12:59 AM
#234
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2004 Cayenne V8 S 55000 miles. I have today replaced the plastic pipes with the Porsche kit- had a small coolant leak and thought best to change them.. Put it all back together but now have another fault. Engine was difficult to start and kept stalling. Suddenly the PSM Warning appeared 'Workshop". Engine now just about runs but missing, poor irregular tickover- running like a dog. Warning on PSM still on screen. I took the inlet manifold off again, rechecked all connections, put it back on- just the same. I did disconnect the rear battery prior to starting work but didn't disconnect secondary. Also removed starter motor and cleaned gear- coolant residue over it.
ANY BRIGHT IDEAS?
ANY BRIGHT IDEAS?
Something is leaking, or unplugged or not connected. What? Can't say, I'm not there..
- Did you replace the intake manifold gaskets?
- Did you replace the gasket on the throttle body?
Either of these leaking would result in unmetered air getting into the engine and causing a severe lean condition, which matches your problems.
You will possibly need to read the stored fault codes to track down what the ECU thinks is wrong.. (one reason I own a DuraMetric.. one dealer visit avoided pays for it.)
07-06-2011, 10:45 AM
#235
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Cayenne Running like a dog
Thanks for your response. The lead to the throttle assembly was very tight to reach the plug. Has another fiddle with it and low and behold the engine is running fine. Took her out for a road test (PSM light still on) and all is fine. Got back, started it up again and the PSM has reset itself! I think the problem was a poor connection at the throttle multi plug. All is now fine.
Thanks for your quick response.
Thanks for your quick response.
07-13-2011, 05:14 PM
#236
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WTB plastic coolant pipes
I'm new here and have a question related to this. I'm looking for a set of the original, plastic engine coolant pipes from a 2003-2006 Cayenne that I can do some testing on. I'm hoping someone on the board may have held onto their original set or will see this before they replace their set - my mechanic contacts have all scrapped them. I'm happy to pay for the pipes and the shipping. Please send me a message if you have a set you'd be willing part with. Thanks.
07-19-2011, 08:36 PM
#237
If you find you're adding coolant on a regular basis - chances are good the O rings on the pipes have started to leak. Not all of the failures are exploding pipes.. If the system is working as designed (ie - not leaking) you should never have to add coolant.
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
The way to check the level is check it in the morning before starting the engine, when things are cooled off. Trying to check it with a hot engine won't give uniform results.. (and is actually warned against in the service writeups on the cooling system.)
07-23-2011, 01:24 AM
#238
Update....got the records from 70k onwards.
08-05-2011, 02:03 PM
#239
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I am the latest victim of the infamous plastic pipe disaster. My '06 Cayenne S (80,000 miles) just started pouring coolant. I now understand what is going on with this mess.
What should I expect to pay at the dealership for repairs?
What should I expect to pay at the dealership for repairs?