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DSPTurtle

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DSPTurtle last won the day on March 10 2020

DSPTurtle had the most liked content!

About DSPTurtle

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  • From
    Melbourne, FL
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2004 Cayenne S<br />
    1999 ML430<br />
    1985 930S<br />
    1983 944
  • Future cars
    GT1, 959
  • Former cars
    I tend not to sell them.

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Community Answers

  1. You are right on JFP. I am able to read out the different temp sensors and watch them react. Engine (coolant) 77.25', Intake 41.25' and oil temp 69'. So the ECU is telling me that it is getting signals in and putting them out through the OBDII port. However, I am getting a repeatable P1671 (computer monitoring: reset) which Porsche lists simply as "ECM Faulty". So tomorrow the computer gets shipped out. I tried swapping the relays in the back to ensure that wasn't the problem and that 1671 keeps coming back. It is the only code that I can get to repeat. Everything else is silent.
  2. So, I unplugged the throttle body and plugged into a spare. As soon as I turn the key to "on" it commands the throttle plate to full close, even with the engine hot. With the throttle body unplugged, the car starts fine. So it seems that the command to close the throttle plate is what is choking the engine when hot. Anyone seen thing type of behavior? Is this a computer issue, because it acts the exact same with two different throttle bodies. (2000 Boxster S with e-gas)
  3. Well the O2 thing turned out to be a fluke. Still having the issue.
  4. A bit of new information after talking to tech support at GIAC... I was previously told that the computer only looks for the CPS signal to start the car. A lot of people said that. But, after talking with the guy at GIAC he suggested checking the O2 sensors. With all four sensors unplugged, the car starts normally. I think we are narrowing this down... O2's seemed happy in the Durametric software but I have heard rumors that the data for the O2 in Durametric can't always be trusted 😞
  5. Hey JFP, this is Jason. You helped me on the pelican private messages. Yes, fuel pressures are rock solid within spec. Especially after changing the FPR on your recommendation!
  6. Changed that too. And used Pedro's advice to just unplug and see if the car will start. No change at all. 😞
  7. So after searching this forum and many others I am at wits end. She cranks perfectly fine and after about 30 seconds she comes to life on a few cylinders and then smooths out and runs perfect. Restart is perfect. Cold start is perfect. Only after sitting 20 minutes once hot and I can recreate it every time. No codes are shown whatsoever. Here's what I have swapped so far. 1. Crank Position Sensor 2. Purge Valve 3. Fuel Pump 4. Cam position sensor 5. Fuel Pressure regulator 6. Spark Plugs 7. Throttle Body (and did the recalibration) 8. Fuel Filter 9. Engine Compartment Temp Sensor 10. Coolant Temp sensor. 11. Smoke Test / No vac leaks Yes, I loaded the parts cannon up and fired it directly at the car. What am I not thinking of?
  8. Does anyone have a trick for getting the brake booster rod out of the brake pedal? Or do you have to suck it up and use the Porsche tool? 2004 Cayenne S.
  9. Clearing the code worked. But I thought P codes were powertrain? Plus, why did it throw a check engine light for an HVAC issue?
  10. Hi Guys and Ladies, Had a weird one today. Anyone know what a P8448 code on a Cayenne GTS might be? It comes up with the Siemens engine control module. Thanks in advance for ideas!
  11. Found the culprit... passenger side vanity mirror. Power lead was crushed by the attachment screw and shorting it out. Pulled every light and put them back one by one till something bad happened. Old school...
  12. Got it. Thank you. Apparently the melted center contact is a good starting point. But still doesn't seem to make sense for all the other lights too. Maybe Miss Piggy just wants to spend some quality time with me. Haha.
  13. Does anyone have access to a 2004 Cayenne S wiring diagram? My interior lights will not come on. Fuse 12 was blown, and it blew again immediately upon replacement. Now it seems to not have blown but no lights come on. I'm trying to find the branches that come off of fuse 12 in the drivers side dashboard.
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