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I had an oil change on the P!G (M1 synthetic) before a trip and that's when the trouble started...
The driver side wheel well makes a gentle creaking sound at idle RPM, which seems to disappear at higher RPM. It sounded like a small frog quietly chirping in the wheel well and I was worried it was a turbo. When we popped the hood, there was sound of a vacuum near the intake. The PCV to crankase hose (part #5) collapses while the engine is running and the oil fill port sucks strong vacuum if the fill cap is removed.
My local independent mechanic (I'm some distance from a Porsche specialist) found that hose 14 and 15 are both cracked and identified their failure as causing the sound. Cause of failure is presumed age/heat. Since replacing those two components are $370-400 in hoses, is there something else we should be looking into as a cause of these pipe failures? Searching the forums I came upon a discussion that makes me think maybe we should be looking at the PCV valve, air oil separator membrane, and the diverter valves? I'm wrench-familiar with NA cars and new to turbos so I'd appreciate your input. Is the restricted airflow or vacuum interruption causing turbo noise? Has anyone else seen this and what else should I be checking?
We do see the boost gauge work normally or at least what it has historically (under acceleration it hits 0.8 bar/pegged and then holds near 0.6-0.7) before these issues started. The rest of the car seems to work well, aside from the a sticky secondary air injection check valve on the passenger side.
Hoses 94810721753 and 94810721651 are cracked
2005 Cayenne V8 Twin Turbo
1085 944 early
Can the 2001 behind the dash wire harness work with the 2003 harnesses including 3.6L engine, engine harness, rear harness, dme 7.8, immobilizer, etc
This is a swapped 3.6 car that was functioning properly in an earlier 2001 race car. Had to Retub the car and move all the harnesses to donor 2001 chassis. Moved everything except the wire harness behind the dash.
The car starts and functions except water temp gauge on the 2003 cluster connected to the 2001 wire harness behind the dash. Also durametric recognized the cluster as an earlier cluster and not the k21 (3.6l) cluster.
Any help will be appreciated.
2002 C2, 95k miles, original exhaust and O2 sensors.
A few months back the CEL went on, Durametric says P0420: Porsche fault code 40 - Cat. conv. efficiency bank 1. CEL has stayed on so I investigated further. Pre- and post-cat O2 sensor voltages shown in attached charts, upper chart for Bank 1 and the lower for Bank 2. Warmed up the system at idle, then throttled up to 2.5 - 3k three times, two short, one long, during which time all sensors went near zero.
It looks like Bank 1 (upper chart) post-cat sensor is showing a problem while Bank 2 (lower) looks fine. (I started capturing Bank 2 after Bank 1) Also for a few years there has been a little rattling on the driver's side exhaust which I've suspected is a failing cat, but the exhaust system has not been recording any faults until now.
After having read a few related threads, it seems fairly certain that the Bank 1 cat is failing, perhaps with a loose element that reduced cat performance after the third throttle bump in the charts below. I'm leaning that way because it appears the sensors are all reporting data at about the same rate, oscillating when expected, except for post-cat Bank 1's sensor which begins the capture looking like it is largely reporting correctly but ends with oscillations that shouldn't be there.
There has been no perceptible change in performance, and I have over a year until the next smog inspection, so there's time.
Does this information indicate a pretty strong likelihood of a failing Bank 1 cat? Or are there additional diagnostic steps I should take to eliminate other causes?
My 1999 911 Carrera started smoking at a streetlight. Very smelly blue smoke was coming from under the engine cover. I pulled over and popped the cover. Blue smoke was coming from somewhere under the engine (not the exhaust). The engine stopped very suddenly.
We don't have a local Porsche dealer, but the Subaru dealer owns a bunch of 911s and he has a couple Porsche mechanics. I had it towed there.
The C1 fuse ("Engine Electronics") was blown. They replaced it, but as soon as they turned the key, the "cam adjuster wiring harness" (I do not know what this is) began to smoke, and the fuse blew again.
They disconnected the cam adjuster wiring harness (I don't know what this means, and neither did the service advisor), and the fuse stayed intact, and they got the car started. They were able to drive it out to the parking lot with no problems.
They said I need a new cam adjuster wiring harness (again, no idea what this is), and this would require an engine out repair, which they could not do. They estimated this work at $5,000 to $6,000.
Additionally, they did not know how drivable the car was with a disconnected cam adjuster wiring harness.
So ... how bad is this? (Service report image attached.)