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GSpence2

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GSpence2 last won the day on December 25 2018

GSpence2 had the most liked content!

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About GSpence2

  • Rank
    Contributing Member

Profile Information

  • Gender
    Male

Profile Fields

  • From
    New York, NY, USA
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    955 CTT, 996TT
  • Future cars
    Carerra GT
  • Former cars
    Audi A6, Audi S8, 928S4, 928S

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  1. As with nearly all Cayenne issues I think a good starting point would be checking and ensuring the battery/batteries and charging system are in good health and operating correctly I’ve been experiencing some weird drivability issues as well and the root cause is pointing to a possible/probable electrical system issue
  2. Need to get it to a Porsche dealer or specialist who can pull the DTCs My guess is a failing transfer case/transverse lock module and solenoid
  3. So I did some more data-logging today during a portion of my morning commute. Mostly low speed (below 25MPH) stop and go but a couple of places where I could really go fast (30-35MPH). If I am understanding and reading this data correctly my check engine light codes P2227 & P2225 are being caused by a vacuum and/or boost leak? Take a look and pay attention to time slots 12:59 & 16:57. Something weird happens both times when it feels like the timing is all of a sudden thrown off, and the truck hesitates, stumbles, loses power, and then snap crackle pops through the exhaust like a cheap rice rocket with a fart pipe. And each time this is with a steady easy throttle no mashing. Untitled.mp4
  4. I realized after the fact some of you may not have a .avi player so I reformatted the data-logging file as a .mp4 Untitled5.mp4
  5. So I pulled some live data today and am going through it now. One thing I'm not certain about that caught my attention is the correlation of ambient air pressure drop as intake air pressure rises; I thought this would actually be the inverse of what's being reported? Have a look. Untitled 5.avi
  6. So I tested the battery today and at rest no ignition I'm getting 12.6 volts. With the engine running I'm getting 13.85 volts. Battery is not even a year old yet. Okay no rodents, ECU check sums are checking out okay, BUT - I'm losing boost, and the timing is being retarded in a big way right when the turbos should start to spool hard about 26-2700 RPMs. Spool up to .3-.4 bar and then le poop! Full dump. Power loss, hesitation, stumble, no CEL - repeat. Hmm...curious... I'll try to capture some live data and post it. I'll try cleaning my MAFs too. I ran some Techron through a couple of weeks ago - didn't really need it but it was a gift so...
  7. hmm, both sensors failing at the same time? rut ro... ECU crapping out? rodents in the engine harness... let's have a look
  8. whoopsie! Sorry about that Boss. 2004 Cayenne Turbo, slightly not stock...
  9. Boost leak? Vacuum leak? Clogged cats? Any help or suggestions would be appreciated.
  10. I just recently replaced my hood latch. It involves take the front bumper cover off to get at the latch and microswitch
  11. oof! the dreaded scored bore sound. I had this same knock before having to rebuild my engine. bores were badly scored on the last two cylinders in bank 1
  12. In normal it's mildly stiff body roll is easy to control when pushing it road imperfections are slightly damped In comfort it wallows around and body roll is noticeable when you push it and road imperfections are dampened more than in normal In sport it's very stiff minimal body roll and you feel every imperfection in the road
  13. Update. So new suspension has been on the truck a little more than a month and I’ve driven it hard and a couple of drag strip days. Guess what? The inner tie rods are already shot! No matter because my rack is leaking anyway so I’ll yank the whole assembly at once. My feedback: go OEM on the suspension bits. While aftermarket kits are super attractive because of their costs, they’re not worth it in the long run. After 1 month about 3900 miles and a couple of trips into the RPM Range 2 zone and the inner tie rods are done!?! Not acceptable.
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