Rick150

China has lots of lettering with the correct font. My Cayenne was de-badged but I decided to put turboS on it, cost me about $25, I could have even put my name there but it was enough.

Very good quality.

My understanding is that after 10 years Porsche treats the car as a classic, would that mean the support obligation is of a discretionally nature? 

Excess fuel, Mass air flow sensor dirty, engine temperature sensor faulty, dirty air filters, oxygen sensor faulty. Then go on to check fuel pressure and related items.

All engines have blow by and it would be expected the blow by gas will be rich in UN-burnt fuel and oil mist in your case.

The AOS will have oil around it including the hose, so when the crankcase has a little pressure then the valve will work sending the oil rich gas to the intake to be burnt ( causing carbon build up on intake valve stems, but that's another story). Look at how the engine knows the correct fuelling, one of those inputs to the ECU is giving the wrong information, I have mentioned a few, find it!

I just don't know about you specific model, all I can suggest is you get a workshop manual for yours if you intend to keep it and use logic in your fault finding procedures.

There was a service man who charged $250 for giving a bit of equipment a kick to get it going, the customer complained that it was an exorbitant price to pay for just a kick but the serviceman said the charge was for knowledge, knowing where to kick.

They are complicated vehicles but with logic you will track down the fault. I will help you best I can but being remote I have to rely on your fault finding ability, logic and intuition. 

Keep me posted.

Unlikely it is the control module but something attached to it. The Tilt Sensor on the boot lid probably telling the module the lid is being opened.

Be careful if you remove the module as it is voltage sensitive, turn off the ignition and remove the key!

Check the switches, connectors for corrosion etc. (there is also a buzzer on the lid)

Check the catch control rod.

Sounds like stretched cam chain (P0341 Camshaft position sensor 1), needs replaced to fix the rough running. Hotter engine makes the worn chain just that little bit longer to the point where it's way out in timing.

Suggest you check the current draw of your starter. If it is very high and causes big voltage drop them maybe you have a bad starter motor. Most diagnostic tools have the crank voltage menu where you can check this.

Check the fuel pressure.

Any help?

Another thing that could be the problem is the MAF, could be faulty or dirty. Engine wise there is not much that changes except the mapping of the engine and transmission. The MAF if faulty would show up when the engine needs a lot of air and the air fuel ratio gets out of spec and the ECU reading from the other sensors don't add up. Also check both air filters. It should have logged a fault code that at first glance may not seem to be relevant but it may be.

I assume you have the correct fuel. Check the Sports mode exhaust flap is working because it may be the vacuum pump is leaking (common fault). Did you check the fault number and if so what is it?

Mine is the same model so I'm very interested in the fault.

More wiring info

Well I have had a look through the 12500 pages and haven't come across the actual latch but when I do I will post it. Here is what I found so far. Sorry about the size but it's a little difficult to post from the format I have.

These are for the 957 but the 955 should be the same?

Is this of any help?

Does anybody have this carbon fibre on their engine? I would like to know year and build configuration.

It will be using last known good position but won't navigate until it gets an update via a satellite. First thing it will do is synchronize the car clock then the car unit will read the almanac of the latest satellite positions that should be near you rather than the car unit searching for the whole constellation. So, if it is not even updating the clock even after reset then you have to check your antenna. Also if it's a little deaf get away from a built up area to lower the noise floor to somewhere  you have a clear look at the horizon above 10 degrees. If your clock gets a timing signal you probably have a bad antenna connection or something like that.  If nothing then something unplugged?  You better to ask a marine service guy as they deal with GPS issues all the time.

You have a clock that can be manually set but the update of the time is constantly corrected by GPS signal. You need 3 satellites to know where you are, 4 is better at least 90 degrees apart for 2 satellites.  Your location is calculated by transit time of the clock signals relative your correct time. Your  internal GPS has an almanac of where satellites should be so the search is quick as possible when the system is turned on. If your system shows the incorrect position then it is not receiving the timing data from acquired satellites and maybe using the outdated almanac.  Maybe it is a bad antenna, I am not sure how the system works in the Porsche but GPS requires synchronisation of time to work. Could be something so simple as reinserting the plug back into the PCM as the signal acquired is very small and any attenuation makes the signal unusable. Your clock defaulting to 2000 is a good indication of not resetting timing data as year 2000 it the base datum for calculation.

Your unit seems to be using old internal data.

Regards Rex

There are a lot of pic's of 4.8L engines but why is mine different and has Carbon Fibre parts which stand out when you lift the hood. What other models have this?

2009 9PAAN1 957 Twin Turbo S

Don't know if this is much help, starter circuit.

This is the wiring for 957 Cruise Control, it gives the pinout numbers, is that any help?

Rex