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JFP in PA

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Everything posted by JFP in PA

  1. JFP in PA
    P1397 Camshaft Position Sensor 2 - Signal Implausible, Short to Ground, Short to B+ Potential causes: - No power supply. - Short circuit to B+ - Short circuit to ground. - CMP sensor faulty Check the wiring...
  2. JFP in PA
    I have to agree with Loren's comments on the 97 cars having more than their share of O2 sensor issue, probably as the result of the first DME version. That said, he is also correct in trying to replace sections of the car's main wiring harness, it is a bear of a job and not without its own related problems. If the electrical diagnostics I suggested are outside your capabilities, it may be time to take the car to a qualified independent shop for them to run the diagnostics, which takes a lot less time than replacing the harness. In all the years I have been working on these cars, very few times was a partial harness replacement actually required, and then only as the outcome of an onboard fire. Most harness issues are repairable.
  3. JFP in PA
    FWIW Pelican often offers incorrect advice along with their outrageous pricing and bogus substitute products.............
  4. JFP in PA
    Welcome to RennTech When was the last time you flushed the clutch hydraulic system? Creeping forward says that the clutch is not releasing, so it is either the hydraulic system or you need a new clutch.................
  5. JFP in PA
    You can probably discern this type of information from either the PET system, or even a dealer's online parts system breakdown drawings.
  6. JFP in PA
    Before relying on such sites, just be aware that the original 1997 Boxster factory service manual was the subject of many revisions, corrections, and updates to correct erroneous information contained in the original edition, all of which were only available in the print version. You also need to recognize that these manuals are considered the intellectual property of Porsche, a point which they vigorously litigate whenever they find someone violating their property rights. As such, it is against this forum's rules to repost such materials or condone such behavior.
  7. JFP in PA
    I cannot give you a specific limit number, but I can tell you that putting in an engine with both high HP and torque, such as a Mezger turbo into a Boxster, decidedly exceeded the gearbox limits. But I also know that people like Jake Raby have built very high output engines for customers where the gearbox's survived just fine, but I have no idea what if any mods he may have made to the trans to make this work. Again, these cars are a system, changing one thing can result in needed alterations elsewhere like in the driveline.
  8. JFP in PA
    The only way to know the answer is to connect a set of A/C test gauges to the system and see what the pressure of the system is:
  9. JFP in PA
    If you do not have the correct equipment to recover the freon out of the system before replacing the unit, take it to an A/C pro that does. These systems require that the old freon be pumped out, parts replaced, vacuum pulled on the entire system to both dry it out and check for leaks, and then it be recharged with the correct amount of gas and lubricant oil; this is decidedly not a backyard mechanic project.
  10. JFP in PA
    They are simply reposting what the manufacturer claims, they don't make it or stand behind it, they just sell it. For the stuff they actually make, that is another story as they do stand behind their products. At the end of the day, it is your money and your car..............
  11. JFP in PA
    On the dyno, these things add VERY marginal improvements in performance, and then only at the extremes of the RPM envelope and in conjunction with other modifications. Most people see little if any real gains other than to make their wallets easier to sit on.......
  12. JFP in PA
    You should be checking cam deviations at idle, but with the engine fully warmed up, like after a short drive.
  13. JFP in PA
    Cam deviation values are cam timing values, where the cams are vs. where they should ideally be in relation to the crankshaft. As these engines are Vario Cam, meaning the cam timing is controlled by the DME to maximize performance, the cam timing changes with RPM. When you read cam deviation, you are looking how far off ideal:
  14. JFP in PA
    Yes.
  15. JFP in PA
    Yes, but for a different reason: Cam deviation specs for your five-chain engine are +/- 6 degrees, so you are out of spec. On your style engine, this is typically caused by severely worn chain pads between the cam shafts: The dark pad has a groove worn into it, while the light pad is a new one. This is a very common problem with the early Boxster's.
  16. JFP in PA
    As noted above: " P1531 - Trigger of actuator, no active position Possible faults: -Open circuit -Actuator defective Diagnostics: P1530 check triggering wire for short to ground, if none is found, replace actuator P1531 Check for battery power on supply wire, if ok, check triggering wire for continuity; if both ok, replace actuator Because the car has been sitting, I would look closely at the condition of the wiring harnesses....................."
  17. JFP in PA
    No, I recommend doing the diagnostics indicated to see if it really needs to be replaced; we are not fans of randomly replacing parts to see what happens.........
  18. JFP in PA
    You have alarm sensors (read switches) on each door, both trunk and engine cover, the "oddments" holder (read console), and last but not least, a motion sensor at the top of the windshield; any or all can become problematic and throw faults and should be tested. As yours is a cab, I would also be looking at the immobilizer under the driver's seat, looking for signs of it having gotten wet, a common source of multiple alarm faults. The tank servo is an independent system and also needs to be looked at for electrical faults.
  19. JFP in PA
    To begin with, you are going to need basic electrical diagnostic gear like a digital multimeter, and a copy of the car's wiring diagram so you can start tracing circuits and testing them.
  20. JFP in PA
    You have multiple electrical faults; the tank servo is not getting power, the central locking computer is not reaching the locked configuration, the interior motion sensor is faulty, and the alarm system is seeing multiple sensors not closed.
  21. JFP in PA
    P0446 is the code for a blocked EVAP system purge valve P1124 and 1126 indicates the system is so lean that the DME cannot correct for it, usually a sign of a vacuum leak in the intake system; none of these codes have anything to di with the O2 sensors..........
  22. JFP in PA
    P1530 - No triggering of the actuator, in the active position Possible faults: -Short to ground -Actuator defective P1531 - Trigger of actuator, no active position Possible faults: -Open circuit -Actuator defective Diagnostics: P1530 check triggering wire for short to ground, if none is found, replace actuator P1531 Check for battery power on supply wire, if ok, check triggering wire for continuity; if both ok, replace actuator Because the car has been sitting, I would look closely at the condition of the wiring harnesses.....................
  23. JFP in PA
    All depends, did the PPI include a full road test of the vehicle? If it only included a lift inspection, probably not.
  24. JFP in PA
    I would start looking at the drive line: wheel bearing hubs, axle shafts, etc. If the engine had a balance problem, it would shake revving it in neutral; if that isn't the case, the drive line is all that is left. 😉
  25. JFP in PA
    If codes will not clear, that means the fault still exists and needs to be repaired for the code(s) to clear. 😉
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