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JFP in PA

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Everything posted by JFP in PA

  1. JFP in PA
    Welcome to RennTech :welcome: The ABS network and the low pad life warning system are completely independent of each other, so one system should not trigger the other. That said, a low battery or weak alternator can cause both to come on, even though there is no underlying reason for them to illuminate. I would scan the car and pull all the current and pending codes as a first step to resolving this; the scan can also check your alternator output while you are at it. The battery should be load tested to find out its state as well.
  2. JFP in PA
    If the cats were sufficiently dead that they rattled , you would be getting codes for the cats being below minimum conversion rates, believe me. We see it regularly. Your leak may also be hitting a heat shield, like Ahsai mentioned. You need to get the car up in the air and start tracing the system to see where it is.
  3. JFP in PA
    Sure, why not? Header flanges or other joints may only open up when the system is hot.
  4. JFP in PA
    If you had bad cats, the car would be coding. You have an exhaust leak.
  5. JFP in PA
    Quite often, AC tray blockage is cause by mold growing in the tray, which often also causes complaints about weird smells inside the car when either the heat or AC is running. Companies like Wurth sell cleaners that can kill off these growths without taking the system apart (you spray them into the heater air intake).
  6. JFP in PA
    You would need access to a factory service manual to see all the details of how to get at one of these. As the service manual data is all copyrighted, it cannot be reproduced online without violating intellectual property rights. The tube (which is molded into a multi curved form to allow it to follow a convoluted pathway from the heater box to drain below the car) fits into a grommet, which sits in the collection tray beneath the AC heat exchanger inside the heater box. If the tube, or the grommet is dislodged or holed, you will have a leak every time the AC runs.
  7. JFP in PA
    Be very careful about poking wire through these drains as it is very easy to either hole or dislodge them, which them becomes a nightmare scenario for leaks as you need to take half the car apart to replace them. Use low pressure compressed air instead.
  8. JFP in PA
    Welcome to RennTech :welcome: The AC drain is accessed from beneath the car:
  9. JFP in PA
    Welcome to RennTech :welcome: If the site has already saved you money, consider becoming a contributing member.
  10. JFP in PA
    That valve is under the intake runners. You need to blow out the entire line attached to it as well.
  11. JFP in PA
    A common DIY mistake. Yes, you can rebuild individual pistons as needed. For future reference, on dual piston calipers, you need to push on both sides at the same time to prevent this from happening; a specific tool is used for this: Cost about $30 and saves a lot of headaches.
  12. JFP in PA
    We use ours to reset service reminders on customer's cars just about every day without problems.
  13. JFP in PA
    We have seen module connection issues on cars with either bad modules themselves, or with communication buss issues. In those cases, the lack of communications was not on Durametric's end, the vehicle's had an organic issue which when corrected allowed full communications. Durametric is also a "constant work in progress" that is regularly being updated to deal with things that crop up, such as Porsche switching some cars from Bosch to Siemen's DME's, which use yet another unique diagnostics logic system.
  14. JFP in PA
    Sometimes, when the MAF in these cars is starting to age out or is dirty, you will get the kinds of issues you describe. I would pull the MAF and thoroughly clean it with an appropriate cleaner like CRC's, then reinstall it and see if the situation improves. If it does not, I would scan the MAF PID's at idle and 2K RPM; if the values of the MAF are all out high, or even near the high end of the range, your MAF is aging out and needs to be replaced.
  15. JFP in PA
    We have used it for years, and it is decidedly the best thing other than one of the hyper expensive factory systems (PIWIS). Not perfect, but pretty damned good.
  16. JFP in PA
    Running a smoke test for vacuum leaks requires a smoke generating machine and attachements: These devices produce a very small stream of smoke that passes through small wand attachments that can be run along vacuum lines and connections while looking for the smoke stream to suddenly disappear, indicating a vacuum leak. Unfortunately, these systems are not inexpensive, but can sometimes be rented. Thanks, does the cayenne 4.5 turbo have a test port anywhere fir connecting the smoke machine? Or is it just a case of pulling hoses one at a time and testing? Neither, running, the smoke machine generates a thin plume of smoke that passes thru one of the attachment's that is slowly moved along the vacuum lines and connections until you see the smoke get sucked in. And before you ask, yes, smoke tests are time intensive.
  17. JFP in PA
    Running a smoke test for vacuum leaks requires a smoke generating machine and attachements: These devices produce a very small stream of smoke that passes through small wand attachments that can be run along vacuum lines and connections while looking for the smoke stream to suddenly disappear, indicating a vacuum leak. Unfortunately, these systems are not inexpensive, but can sometimes be rented.
  18. JFP in PA
    The actual scans i do on the DME are no problem and will connect and pull the codes from this without any problems, its all the other items that the manufacturer states it reads like kessy, aircon, alarm, electric memory seats etc etc. We use the Durametric system (Pro version) for that and have encountered very few issues over the years, most of which were specific vehicle related.
  19. JFP in PA
    Then I would pull it and open it up. We often find everything from corrosion to liquid water in them after it has been wet under the seat. There is also an internal fuse in the unit as well that should be checked:
  20. JFP in PA
    Did you remove and open the alarm system control unit and check the inside?
  21. JFP in PA
    I have read the same thing. Only problem I see is that it is selling at a price here that is approaching the entry level Durametric system, which is much more capable.
  22. JFP in PA
    Somewhere along the line, Porsche switched from a Bosch DME to one from Siemens in the Cayenne's, which may be part of your issues. Even Durametric had some problems when that change occurred, but they have been correcting that.
  23. JFP in PA
    Way, way more than enough.
  24. JFP in PA
    Better made perhaps, no data on hotter spark.
  25. JFP in PA
    I would not be overly concerned about flat spotting as it is overly exaggerated. We store cars for as long as six months without ever starting or moving them; and while the car show some slight signs of flat spots when they come out, 5-10 min. of driving and all evidence of flat spotting is gone. Cars that suffer permanent flat spotting have a tire problem, not a storage issue.
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