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JFP in PA

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Everything posted by JFP in PA

  1. JFP in PA
    If you are running decent quality oil, do regular maintenance, and have not altered the valve train, your chains should run for a long time. From years of experience, the only time we have seen the chains fail in these engine's was when something else died first, causing the chain to break, not the other way around. For the most part, they seem to run for ever and are one of the least problematic components in the M96 engine.
  2. JFP in PA
    Welcome to RennTech Year and model are always helpful when answering this type of question.............
  3. JFP in PA
    We have not been a fan of master link style chains for these cars, primarily as the chain is a bear to replace with the engine in the car (it is unimaginably worse than trying to build a ship in a bottle), and the longevity of the master link assembly itself. Pull the engine and do a proper chain swap, along with any other needed/wanted updates at the same time. Overall, you will probably end up saving time, and you will know the new chain is solid.
  4. JFP in PA
    Welcome to RennTech It always helps to have the model and year of the car when asking this type of question as the cars vary over time. More than likely, your locking issue is related to the water immersion as the locking and security systems are controlled by a small computer located under the driver's seat on most models. Sometimes this box can be dried out, but not always.
  5. JFP in PA
    It is a one way valve that is in the end of the cam cover that opens under vacuum. I would also seriously consider running a leak down on the engine that develops pressure; if you have a bad ring in one or more cylinders, or the more common out of round cylinder liners, your problem is more serious. You should not have pressure in the cases while the engine is running.
  6. JFP in PA
    No, the cams must be locked as well.
  7. JFP in PA
    Welcome to RennTech Yes.
  8. JFP in PA
    A good AOS will pull between 3-6 inches of water on a first start of a cold engine, but will then settle down to 5" or less, so anything over 5" on a warm engine is suspect and should be replaced. Secondly, with your crankcase jumping back and forth between vacuum and pressure, your AOS can also be "fluttering", working some of the time, but not all the time. New AOS unit can be bad, we have seen more than a few. Aftermarket (read non factory) AOS units have been a disaster, with many failing within days of being installed. We do not use anything but factory AOS units, and we still check everyone after it is installed because we still see bad ones from time to time.
  9. JFP in PA
    For future reference, please do not multiple post on the same topic in different threads. It is against forum rules. As point out in the other thread, you have a vacuum leak in your brake booster vacuum line that letting air directly into your intake and causing a lean miss. Fix the leak, you problem will go away.
  10. JFP in PA
    The answer is yes, it can cause a lean misfire as it is leaking outside air directly into the intake manifold.
  11. JFP in PA
    Welcome to RennTech I would have to say that the AOS is bad. We check every car that passes through the shop with a digital manometer, and if any one exceeds 5 inches, we recommend replacing the AOS. You also should not be swinging from vacuum to pressure in the crankcase as the low tension piston rings will loose seal. With the engine running, you should always have some level (3-5 inches of water) in the cases. You also have a PCV-like valve at the cam cover end of the long AOS line, which may be momentarily sticking. Not a lot of fun to get at, but not expensive to get a new one.
  12. JFP in PA
    It is a relatively simple DIY project. Do a search, been written up here several times.
  13. JFP in PA
    Everything is expensive at the dealer, which is why more people are doing this kind of repair by themselves.
  14. JFP in PA
    Doesn't matter if it was changed 3 miles ago, it still needs to be tested. A lot of problems like this are traced to the alternator rather than the battery.
  15. JFP in PA
    Check both the voltage output of your alternator, and if you have the equipment to do so, load test the alternator as well. ABS/PSM faults are common when the available voltage drops too low.
  16. JFP in PA
    You have far too much time on your hands
  17. JFP in PA
    You are dead in the water. There is no way to program the car to accept the keys without the factory codes.
  18. JFP in PA
    First of all, the keys are not programmed, the car is programmed to accept the keys. This requires the use of a PST II or PIWIS on the car in question. You will also need the factory code tags that should have come with the keys.
  19. JFP in PA
    You need to be aware that the later Tips use different electronics to control them, so to be safe, you should stay as close to the same year as possible.
  20. JFP in PA
    Not a chance. When you take off the sump cover, you will not seen any bearings. All the bearings are inside the crank carrier and cases
  21. JFP in PA
    P1602 indicates a loss of power to terminal 30 of the DME, which will erase all adaptation values stored in the DME. Usually, this is a wiring or DME connector issue, and rarely a DME fault. That alone is going to aggravate the Hell out of everything.
  22. JFP in PA
    The only way you would know if the TSB has been applied is to have the dealer check, if it was, it should be in their system. TSB's, like nearly all Porsche technical literature, is protected by copyright, so reproduction or distribution is a violation of their intellectual property rights, which the pursue and prosecute vigorously. As such, we cannot post them on the website.
  23. JFP in PA
    To follow up on what Ahsai has outlined, you need to: Load test the battery Voltage and load test the alternator Check the voltage drop across the primary battery cables You should have a 40-60 mA draw on the battery for about 1 hour or so after the car is shut off. Any more than that and you have a parasitic drain on the system. Lesson to be learned: Do not assume anything when it comes to diagnostics, even at the dealer. You should have gotten a detailed break down of what they tested and what they found. We regularly see cars that were just at the dealers, and they completely missed an obvious problem that I would expect an intern to catch.
  24. JFP in PA
    I rather doubt that the MAF could cause this without throwing a MAF related code, which you do not have.
  25. JFP in PA
    Aftermarket replacements, particularly HID units, cause all sorts of headaches ranging from weird electrical issues to cars failing state inspection either because the lights did not have the correct focusing lenses, or were devoid of DOT approval markings (mandatory in some states here). Because of all the problems we have seen, we also consider aftermarket headlights a "deduct" item when doing a PPI on a car.
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