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JFP in PA

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Everything posted by JFP in PA

  1. JFP in PA
    OK, here goes: It is easiest if the car is running. Yes on the pin to pin tests. P0140: Interruption of signal on O2 sensor after the main cat on bank #1. Diagnostics are to check the continuity of the signal wires back to the DME terminal #4 at the sensor to terminal 77 at the DME; terminal 3 at the sensor to terminal to terminal 46 at the DME. Also check both wires for potential short to ground. P0160 is the same tests on the other bank sensor. P1121 is for low heating circuit current on the sensor ahead of the cat on bank #2, again, a possible interruption or short to ground of the circuit. It is also useful to check ALL of the O2 sensors for normal voltage curve function; the sensor behind the main cat should be drawing a fairly straight voltage curve over time, while the one ahead of the cat on the same bank should be fluctuating voltage in a sine wave fashion: I my experience, it is very odd to have multiple O2 sensors fail all at the same time; usually this is a harness problem.
  2. JFP in PA
    Not necessarily, you would have to catch it in real time to see any difference. And, as all the diagnostic tests are electrical in nature, it would be worthwhile running them to make sure you do not have a simple wiring fault.
  3. JFP in PA
    P1531 indicates a problem with the cam adjuster on bank #1, indicating that it is not assuming the active position. Possible causes: Open circuit on triggering wire Open circuit on B+ supply wire Faulty actuator Diagnosis procedures: Check B+ power supply wire for voltage, repair wire if necessary Check trigger wire for continuity, repair wire if necessary If both are OK, replace actuator
  4. JFP in PA
    I would suggest you scan the car with a diagnostic tool that can read what coolant temp the DME is seeing, if it is not seeing any temp, you have a wiring or sensor issue. If the tool sees temp at the DME, the issue is the harness between the sensor and the dash, or the display itself.
  5. JFP in PA
    Welcome to RennTech The plastic gear set in these top's mechanism are a well-known failure point, I'd start there.
  6. JFP in PA
    Just tried it, may have been removed by the original poster....................
  7. JFP in PA
    That is definitely not "opportunity knocking". To replace the pinion bearing, the entire gear "tree" has to be disassembled, and some special tooling is involved as well (surprise, surprise). Another reason why for most, this is not a DIY project, but usually farmed out to one of the specialty gearbox shops.
  8. JFP in PA
    And just as a by-the-by, that pinion bearing is a $500 item at retail 😮
  9. JFP in PA
    Not necessarily. The other thing you need to consider is having to do it all over again if you guess wrong on which bearing it is, which is why most shops replace ALL the bearings when there is a problem.
  10. JFP in PA
    And just as an observation: Noises when loading or unloading the drive line are rarely related to the side carrier bearings; the more likely suspect is the pinion bearings......
  11. JFP in PA
    Welcome to RennTech The carrier shims are outside the carrier bearings, item #10 in this diagram: Pre load measurement: The backlash or free play should be in the range 0.12 to 0.22 mm. Here's a picture showing its measurement with factory tools. Have fun..................😉
  12. JFP in PA
    Welcome to RennTech 955-606-103-00
  13. JFP in PA
    Either an air pocket or a disconnected or dead gauge sender.
  14. JFP in PA
  15. JFP in PA
    Asking what a cat life span should be is like asking "how high is up". Multiple factors come into play, type of fuel use, quality of fuel used, how the car is driven, oil consumption levels. etc., etc. The factory cats were warrantied (thanks to the EPA) for eight years or eighty thousand miles. Only problems we have seen in aftermarket cats are performance consistency and build quality, so if you want a long-life unit, go factory.
  16. JFP in PA
  17. JFP in PA
    Let's start with the most obvious first: P0420 (or 0430 for the other bank) is a three-way main cat efficiency failure, if the two O2 sensors on bank 1 are reading correctly electrically, the OBD II manual recommends clearing the code, road testing the car, and checking to see if the code is back. If it is, the cat is on the way out. POIS: This is Porsche Side Impact Protecting system, or side airbags. One of your codes indicates a lack of communication in the system, which could just be a control module reset or replacement, which is going to require a PIWIS system. It could also be a simple wiring issue. PAS: Porsche Active Safe, or PAS, is an advanced driver safety system designed to limit forward collisions by using a powerful front-facing radar scanner to detect other vehicles. You would need a wiring diagram to determine what terminal 50 is, but 8004 is a PCM/Radio code - that says the CAN bus is not connected.
  18. JFP in PA
    No.
  19. JFP in PA
    Welcome to RennTech If you are referring to the I/M Readiness test showing the cats are not ready, you may have a bigger issue. The cats show ready when they meet certain electrical signal parameters coming from the O2 sensors: If the cats do not meet this threshold, and the O2 sensors check out OK, one or both of the cats could be on the way out.
  20. JFP in PA
    That may be the alarm system wire that attached to a special connection on the radio surround cage.
  21. JFP in PA
    "The Boxster 2001 cars are by far the most flexible in which engine you can install in them. The 2001 cars still have the 7.2 DME installed, but most of the other systems of the car were upgraded in anticipation of moving towards the 2002 CAN bus system that integrates various electronic systems on the car. With the exception of the anti-lock braking system, the proper CAN bus systems are integrated into the 2001 chassis and allow the easy installation of the later 7.8 DME. As a result, you can install any 1997-08 Boxster or 996 Carrera motor into these cars without too much difficulty. You can swap in any replacement engine of the same displacement from 2000-02 without having to remap the DME. (for example, a 2001 3.2L Boxster with a blown motor can accept a 2002 3.2L engine with no remapping needed). These cars ran the Bosch Motronic 7.2 system, which uses an electronic throttle body, linked to an electronic gas pedal (also known as drive-by-wire). When installing an engine into one of these cars, you need to use an electronic throttle body and corresponding crossover tube that matches that engine. (I.E. use the electronic throttle body from a 2000 or later 996 Carrera when installing a 3.4 engine)."
  22. JFP in PA
    I wouldn't discount fuel pressure/delivery rate until you have tested it. You can also run the car with a laptop in it using the Durametric software and have it record engine parameters to see what suddenly changes, but that will not help you with the fuel system, for that you need a test gauge as the DME does not record fuel pressure or delivery rates.
  23. JFP in PA
    Try 999-166-075-02 😉 It is called a "Hinge Plate Lock Nut - Porsche" in Porsche parts speak.............
  24. JFP in PA
    Welcome to RennTech You are witnessing the limitations of using a global OBD II tool instead of a Porsche specific tool. I suspect that there are either pending or active codes you are not seeing. The P1130 code is good example; that is the code for an overly lean condition on bank two, possible due to an air leak in the intake system, low fuel pressure or delivery rates, or a fouled injector; any of which would prevent the car from reaching IM Readiness.
  25. JFP in PA
    Your coolant system should always be able to hold 24-26 inches of vacuum for 15 min. after the evacuation system is shut down; the leak you saw the last time could have been this part.
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