SpawnyWhippet

Did anyone get a solution to this? I have similar errors in my 07 Cayman S:

I gave up on the car and sold it for pennies on the dollar on Craigslist. Too many consecutive very large repairs in a very short time. Surprising for such an expensive car with so few miles (80k), when everything else looked and smelt like brand new. This is the second Cayenne Turbo I had to almost give away.

I too would love to know the cost and man hours on this one. My CTT has the same issue, I am getting quotes for 30+ hours labor plus lots of parts, close to $10k total

 

Hey Cterry77,

I've been waiting to post this, I just got my Cayenne S back from the shop (same year as yours). My issues were a cam code (bank 2) which came back immediately after clearing....caused a weird starting issue (crank/stop...crank/start) & a slight reduction in power. The shop traced the faults to the timing chain being out of sync. They took the intake manifold & valve covers off & re-timed the engine using special fixtures to lock the camshafts in place. Both banks were out of sync, since the intake manifold was out they carbon blasted the intake valves. Got it back and WOW, what a difference. Loads of power, transmission shifts better, no more starting issues. I forgot just how beautiful this engine really is.... I'm not saying that you're problem is the same as mine but my issues were solved :)

 

Took the CTT to a independent specialist today. He hooked it up to his scanner / scope and not good news. He told me the cams were way out of deviation. Bank 2 was 15 deg out, Bank 1 was not even giving a measurement. Both cam sensors were giving readings. His opinion is that the rough running and misfires are most likely due to stretched timing chains.

He said the only real corrective action was to replace the timing chains and plastic parts, which meant dropping and stripping the engine - 30 plus hours and a few thousand in parts. Not much change from $10k.

Is there any way that the cam timing can be brought back into spec (+- 6 deg) without doing all that? No kind of mechanical adjustment that can be done on the cams without pulling or stripping the engine?

I ran some tests with my Durametric today. It looks like there are definitely problems with the camshaft or camshaft sensor. Camshaft deviation is not even reading on bank A.

The cylinder faults and misfires show something is clearly wrong with cylinder 3.

I am not skilled enough to further interpret these graphs, or know how to troubleshoot any further. Neither is my local Porsche dealer, who just wants to throw every Cayenne part at it until the problem stops.

Cylinder fault counter

Camshaft specified angle

Camshaft deviation

Camshaft actual angle

Misfire counter

OK, I replaced the camshaft sensor for bank A (cyl 1-4) and also the valve cover gaskets on both sides. (Despite the relatively low mileage, these gaskets were well overdue for replacement and the old ones had gone completely hard, brittle and cracked. They came out in many small pieces.)

I didn't yet replace the crankshaft position sensor.

I now no longer seem to have a misfire, but I still get the camshaft correlation error, the car will not rev over 4000 rpm, is noticeably down on power and the CEL is on.

P0344:
Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor - No signal/communication, test conditions are not-completed, fault is not currently active and is not causing a DTC light

P0016:
Crankshaft Position Camshaft Pos. Correlation Bank 1 Sensor A - Value below lower limit value, test conditions are not-completed, fault is currently active and causing a DTC light

I cleared the codes, went for a drive and the CEL came on again.

I pulled the codes and just got P0016, not P0344. Car is still down on power and stops revving at exactly 4000rpm.

I noticed when I did the drivers side gasket that there was a bypassed wire to the rear of the engine, just behind the secondary air pump. It bridged a short harness between 2 connector blocks. I couldn't tell where it was going to or from as there is a real rats nest of factory wiring there. The bypass looked intact, and it was not on the side that is giving the faults. Anyone know if a wiring fault on the drivers side would cause issues on the passenger cylinders?

Have you borescoped cyl 3? How did that plug look compared to others when you changed them

Yes, nothing particularly conclusive. The plug was a light brown color, similar to the plug from cyl 1.

I have just picked up new valve cover gaskets, camshaft and crankshaft position sensors which I'll install tomorrow and see if there is any difference.

Great, I'll pull out a scope from my friends garage and have a play. Not entirely sure what I would need to do with that information even if I manage to get a waveform on the screen.

Yes, I plan to trouble shoot further. It's a very annoying thing to drive now, stinking of burnt oil and misfiring.

I have a Durametric Pro and Fluke car multimeter that may have an oscilloscope function - it has pickups for coil leads.

I also can borrow a Snap on Vantage Pro or Verus from a friend, but I have no idea how to use a scope on a car.

Both tools arrived today. The coil pack tool worked well and proved the coil pack is working, as I already expected.

The fuel injector tool kind of worked, and I think it means the injector is working.

I'm leaning towards the cylinder 3 misfire being caused by the crank and or cam position sensors...

While I was checking, I noticed both valve cover gaskets have started leaking at the rear of the engine. Doesn't this thing ever give me a break??

Or you can buy these aftermarket ones that work just as well for $144 total. Get them installed at any tire shop for $20 per wheel and all done for under $250.

I am modifying a manual transmission steering wheel to be a paddle shift wheel for a Tiptronic and would like to add 4 pins to the wiring harness connector block. I can buy a Tiptronic harness for $2-300, but would prefer to just buy the pins to add the extra wires to the connector block if possible.

Any way to buy these separately? The block looks like it is also used by all the other German manufacturers as their logos are all on it too.

I have a pretty well equipped home garage (in the Menlo Park area) with a MaxJax lift, quite a few Porsche specific tools and Durametric Pro.

I have done a lot of work on 1972 - 2007 Porsches, from partial engine rebuilds and IMS bearing updates to spark plug changes.

I'm open to letting local Porsche guys use these and will help wrench on cars in exchange for assistance on mine when needed.

Yep

When you look further down the page, you can see the Amazon recommended purchases for what other things this customer might buy.

I do not think I have any bad coils. I already replaced the coil on the non-firing cylinder, and that coil worked fine on other cylinders. I need to test the wiring harness and injectors next.

Great, thanks. I ordered that and the matching electronic ignition test tool

Is there an easy way to test the signal to the coil?

Did you ever resolve this? I have the same codes being thrown on my 05 CTT with 82k miles.

I did a test drive after moving the coil packs again, this time no misfire on cyl 3, just the following 2 codes:

Bosch Digital Motor Electronics 7.1.1
    
  Current Fault Codes  
 P0344:
Camshaft Position Sensor "A" Circuit Bank 1 or Single Sensor - No signal/communication, test conditions are not-completed, fault is not currently active and is not causing a DTC light
 
 P0016:
Crankshaft Position �Camshaft Pos. Correlation Bank 1 Sensor A - Value below lower limit value, test conditions are not-completed, fault is currently active and is not causing a DTC light

Does this look like a cam sensor? I believe that's another large job involving intake manifold removal? Not much appetite to do that after my recent turbo replacement DIY...

Worse than that even. I told them before they worked on it that the coils and spark plugs had been replaced with no change, still getting misfire on cylinder 3. I then told them that I switched coil 3 and coil 1 and the misfire stayed on cyl 3.

I think they completely ignored me, plugged in their computer, it said 'misfire on 3' and they stopped work after looking at the coil part number.

They are the Porsche main dealers for my area.

I have just done a compression test on cyl 1 and 3, both showing 140 ish, but I didn't remove all the other plugs to do it

So I have replaced the turbo and am still getting some of these errors and a misfire.

The car has been twice to my local stealership and both times they didn't bother to correctly diagnose it. They just looked at the coil packs and said they are old, need changing. However they are new old stock and the fault does NOT move if I switch the coil packs with known good firing cylinders. The fault is always with cylinder 3.

Could this be injectors or something more ominous, eg low compression or valve problems?

Bosch Digital Motor Electronics 7.1.1

Current Fault Codes

P0016:

Crankshaft Position. Camshaft Pos. Correlation Bank 1 Sensor A - Value below lower limit value, test conditions are not-completed, fault is not currently active and is not causing a DTC light

P0300:

Random/Multiple Cylinder Misfire Detected - Implausible signal, test conditions are not-completed, fault is not currently active and is not causing a DTC light

P0303:
Cylinder 3 Misfire Detected - Implausible signal, test conditions are not-completed, fault is not currently active and is not causing a DTC light

OK, I went to look at the wheels, they fit just fine and clear the brakes. Offsets look about the same as the current rims, although the 18" rims looks far too small for the car after running around on 20"s. I have no idea why Porsche says they don't fit the earlier cars.

Engine mounts on the Turbo need engine out to change. I had perfect access to my drivers side engine mount when I pulled the turbo, but there was not enough clearance to get the mount out the subframe - the built in threaded bolt prevented it from being removed.

I want to buy a used set of Cayenne 2011-2013 18" rims with winter tires for my 05 Cayenne Turbo to go skiing. Is this going fit or cause any problems?