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JFP in PA

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Everything posted by JFP in PA

  1. JFP in PA
    The sensor should be showing a millivolt AC signal with the tire turning that varies with the wheel speed.
  2. JFP in PA
    Yes, there is a rear manual release, just like the front. We see cars all the time that are stored in climate controlled, secure garages with rodent related wire damage. Time to start looking at the wire harnesses, particularly where you said it was warm or smelled like burning............
  3. JFP in PA
    1. Are you sure the sides harness has not be switched? 2. Have you tested the harness for continuity to be sure it isn't damaged? 3. Using a multimeter, have you tested the sides for signal generation by spinning the tire with the meter connected to the sensor?
  4. JFP in PA
    Welcom to RennTech Yes, the Tip fluid level needs to be checked from underneath and with the trans warmed up. I am always concerned about sudden onset electrical problems in these cars after they have been sitting for a while. The wiring harnesses are capable of attracting rodents that seem to love to chew on the insulation, resulting in all sorts of problems up to and including burning the car to the ground. You need to do a search for the manual front hood release cable (video here:
  5. JFP in PA
    The diagram I posted is a simplistic one from the Porsche factory OBD II diagnostics manual. The wire colors and pin numbering changed on different model years, but the principles were still the same: the sensor has three wires, one for power, one for signal to the DME, and one for ground. Where did you get your diagram from?
  6. JFP in PA
    Pin 53 is power, common for most sensors Pin 21 is the signal (incoming to the DME) Pin 34 is ground, common tor most sensors It concerns me that you are not seeing a 5 volt reference signal between pins 1 and 3 when back probing the sensor connector.
  7. JFP in PA
    Questionable. Lot of people have tried various "fixes" for similar damage, only to find their efforts resulted in only a temporary repair that ultimately failed again.
  8. JFP in PA
    I'd start with that new plenum installation.
  9. JFP in PA
    Disconnecting the battery will clear codes and reset some modules to their default profiles (Disconnecting the battery will still erase the "adaptive" or "learned" driving style settings, but it will not fully reset the DME to factory defaults.) but does not reboot anything in the DME, the system is purposely designed that way.
  10. JFP in PA
    Then I would say put the car back to the way it was, clear all the codes and see what happens. This is strange.........
  11. JFP in PA
    Sorry for the delay getting back to you, took a couple days off over the holiday. From the sound of it, you missed somewhere when you tried replacing the cam sensor wiring with jumpers. Are you absolutely sure you traced the correct harness wires for cam sensor #1? Did you check to see if the wires from the sensor pass thru something else (another device) on the way to the DME? Using the axiom to always go back to where you were before the problem, can you go back to the original wires or were they cut away?
  12. JFP in PA
    The EU mandates using only non metallic anti seize compounds for environmental reasons, so the compounds available there tend to act as electrical insulators, which can cause plugs to misfire. Here, anti seize compounds are metallic and therefore both electrically and thermally conductive and work fine on spark plugs. We put a small dab of a high quality anti seize compound on all spark plugs, new or old, and have never had any issues.
  13. JFP in PA
    Get the battery load tested, if you don't have the tools, take it to an auto parts store as most will test it for free. Voltage doesn't start the car, amperage does.........
  14. JFP in PA
    Probably. Three things to check: Check each wire for continuity from the sensor to the DME, check each wire for resistance, and check each wire for voltage drop. As harnesses age, the wire can develop internal resistance over the length, or even breaks which continuity would catch. Resistance may not change much, but any increase in resistance can lead to voltage drop, and as most sensor are running at low or even factional voltages, the voltage at one end is different than that at the other (voltage drop), which drives these systems nuts.
  15. JFP in PA
    You will need access to the wiring diagrams for your car. Either a Bentley manual or the factory wiring diagrams.
  16. JFP in PA
    Should be possible, just watch the wire size and make it as close to the harness as you can.
  17. JFP in PA
    Welcome to RennTech The factory radio had a ground wire that had to be attached to the car's chassis under the dash as a simple anti theft device. If that ground is not there, the immobilizer will prevent the car from starting.
  18. JFP in PA
  19. JFP in PA
    Both the low and high pressure switches must be in the closed position in order for there to be a complete electrical circuit to engage the compressor clutch. I would be looking for continuity across the terminals on the switch, which would indicate that closed position.
  20. JFP in PA
    Should be under the windshield cowling where the battery sits.
  21. JFP in PA
    Your problem may not be the sensor itself; P0335 means the DME is not receiving a viable signal from the sensor, which can also be caused by a wiring harness problem between the sensor and the DME.
  22. JFP in PA
    Welcome to RennTech To my knowledge, there is no "kit", you have to order all the components separately. A good parts desk, like board sponsor Sunset Porsche in Oregon, could quickly put together everything you are looking for. That said, I also would not be using silicone for coolant lines.
  23. JFP in PA
    I do not, we normally stock a variety of wire sizes and colors, heat shrink tubing, connectors, zip ties, and the like that we source from a local electrical vendor, but you can find similar supplies from multiple sources like WireCare.com | Your Local Cable Management Superstore! WWW.WIRECARE.COM WireCare is your online wire & cable management superstore. We have what you need for connecting, harnessing, & beautifying all of your electrical projects. We carry the highest quality... .
  24. JFP in PA
    It is always best to solder the wires back together and then heat shrink them for weather proofing. A lot of sensors, like the MAF, use factional voltage signals that don't do well when crimp connectors are used, so solder is the way to go. 👍
  25. JFP in PA
    Here is the documentation from the Porsche DME manual P0327 210 Knock sensor 1 - below limit Diagnosis conditions • Engine speed more than 3600 rpm • Engine load greater than 45 % Possible fault cause ♦ Break in wiring or short to ground ♦ Contact corrosion on the connector ♦ Knock sensor loose ♦ Short circuit to B+ ♦ Knock sensor ♦ When a fault is stored, the ignition angle is retarded for all cylinders in the range in which knock control is active. ♦ Knock control adaptation is inactive. ♦ If knock control becomes active here, this may indicate engine damage (increased noise level) Affected terminals Terminal III/49 and III/50 Diagnosis/troubleshooting
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