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roach2012

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About roach2012

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    Member

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  • Gender
    Male
  • Interests
    Cayenne's

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  • From
    calgary
  • Porsche Club
    No
  • Present cars
    2004 Cayenne S W Air

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  1. I believe the all the Cayennes & Panameras have the same evap system, along with the bigger Audi's & VW's (i found this info on a VW site). When i replaced the LDP, it & the vacuum line were flooded with oil (i now know this was due to the failed vacuum pump as you pointed out). But the oil did stop the LDP from even performing the test, subsequently triggering P0455. To clear the line there are some good tutorials on how to get to the carbon canister assy, but this is what i did: - unhook vacuum line in engine compartment - jack up rear right side
  2. Yeah that lower bolt was a pain, especially with what i think is the steel PDCC line over it. Ended up giving it to a mechanic to fix, which to their credit they did well. there may be oil in your vacuum line to the LDP left over from the failing vacuum pump, un-hook it at both ends & blow some air through fixed that on mine (after also replacing the LDP) All codes gone now but still getting large puff of smoke on start up (every 2-3 days) & an occasional large puff during acceleration.
  3. Kino, you could be right. After replacing the LDP the code went away for a week or so & has now come back twice. Are there any good DIY's for replacing the vacuum pump ? i see one on Pelican parts but i appear to have an extra metal line for the hydraulic sway bar completely blocking access to the lower bolt.
  4. Thanks for taking interest, In this case after testing the LDP the P2404 code was set by the leak detection pump when it was full of oil possibly form engine blow-by of some kind (bad check valve or bad engine TBD) Either way the oil must have been on/around the reed switch causing an electrical fault & a bad signal (oil is conductive &/or just sticky) , it seems to have cleared up after draining. Still have P0455 though. Currently waiting on LDP delivery from an online supplier. 1/2 to 1/5 of dealership price depending on which you call VW/Audi/Porsche, all our EVAP s
  5. After looking at a few more diagrams there there a couple of options but i don't really understand any on them fully. 1 - its back flowing through the vacuum line (which was also full of oil) , kinda posable given that this is a turbo but I'm not sure on how exactly the pressure would get reversed. The positive pressure at the LDP solenoid could explain the electrical plug filling with oil though. There is a good vacuum in the crank case when the engine is running & the oil filler cap is removed, not likely a vacuum pump issue. 2- coming through the carbon canist
  6. Thank you for the huge post, very informative ! Another sad story from a long time forum lurker, with a 2008 Cayenne TT I have the same (ish) problem, symptoms include: -P2404 & P0455 - Puff of smoke on start up (every 2-3 days) -In addition I'm seeing an occasional (once every 2 weeks) idle drop & engine vibration when coming to stop. I have a smoker & the Durametric cable to perform the diagnostics but can not find where you activate the purge valve with the scanner (if anyone knows that would be great!?) Checked the gas
  7. Same situation here Cylinder # 5 Trady have you found any innovative solutions that work or at least seem promising ? To the best of my quite limited understanding, the whole block is Alu-Sil, so re-honing would be a simple job (to those who can).
  8. Update: My issue was the back pressure retaining valve located directly on the shock where the air hose connects, it had seized up & essentially became a one way valve trapping the max pressure in the cylinder at all ride height settings (made one corner 1" higher than any other & the car cornered like crap). Easy to diagnose if you have the same symptoms. 1) place jack under suspected corner 2) remove pannel covering the compressor & valve body 3) unscrew the suspected line to that corner, they are labelled on the valve body & if the air hissed only for a second (
  9. Update: My issue was the back pressure retaining valve located directly on the shock where the air hose connects, it had seized up & essentially became a one way valve trapping the max pressure in the cylinder at all ride height settings (made one corner 1" higher than any other & the car cornered like crap). Easy to diagnose if you have the same symptoms. 1) place jack under suspected corner 2) remove pannel covering the compressor & valve body 3) unscrew the suspected line to that corner, they are labelled on the valve body & if the air hissed only for a second (or
  10. did you ever manage to solve this problem , my rear is high & front is very low
  11. mine still will not rise during the calibration test. but i do get an error 2250 my front values are 190 mm and rear are 237 mm, you are saying i should enter the front as 200 mm ?
  12. Yep the second i hit the switch during the test causes the test to fail, but will raise the car. if try to go in to Low manually i am seeing an error code 2250 seems to be a valve but i don't know which one. One thing i have started doing is just guessing the values (i know dumb) before the car returns to normal level, don't do this. The front is way lower than i have ever seen it before @ now won't go up. It probably had something to do with hitting save when the front was in the low setting; saving 190 mm with low.
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