Jump to content

Server Lease Renewal/Software Licenses - Goal Reached!

A big Thank You to all those that donated to help us reach our 2019 goal (and pay the site operating costs)!

Just an FYI - if all members of this site had donated - then the cost per member would have been less than $0.06 each.

Thanks again to all of you that did contribute!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)


  • Content Count

  • Joined

  • Days Won


Everything posted by Loren

  1. There are no image limits for Contributing Members.
  2. Change the brake fluid and check the pads and discs. Change the fuel filter (up under the car on the C2). Of course, check the battery with a hydrometer for each cell (unless it is an AGM battery). Also check charge and charging voltage (should over 13 VDC).
  3. Try 3450 PS. Porsche didn't do it Becker did.
  4. The front drains start in the area in front of the windshield (where the battery is) and exit in the wheel well housing. The HVAC drain starts in the cars interior connection at the condenser and exist directly under the car. The sunroof drains begin in the sunroof channel and exit in the wheel wells.
  5. U0155 Instrument cluster, communication Possible fault causes - No power supply for instrument cluster - Instrument cluster incorrectly coded - Short circuit or open circuit in the CAN display - Instrument cluster faulty (in most cases the cause is not the instrument cluster but incorrect coding!) U0146 Gateway control unit communication Possible fault causes - No power supply for Gateway control unit - Incorrect coding of Gateway control unit - Short circuit or open circuit of CAN Drive - Gateway control unit faulty (in most cases the cause is incorrect coding and not the Gateway control unit!) U0418 Stop light switch Possible fault causes - Open circuit in signal wire from stop test switch - Stop light switch faulty U0423 Fault entry in specified control module Possible fault causes - Control module is incorrectly coded - Periphery connected to specified control module is incorrect - Control module faulty (in most cases the cause is not the control module but incorrect coding!) 1990 Positive engine torque intervention not possible Possible fault causes - Fault in CAN bus - DME control unit detects engine fault
  6. You will need to find a salvage yard for internal light parts as Porsche only sells the whole assembly.
  7. Reverse the battery - press the button once. Replace the battery in the correct orientation and try again. If that does not fix it then you likely need a new key fob (and the $150 programming to your car).
  8. The diagnosis detects pulsations in the intake air tract from the boost pressure sensor reading. When the overrun recirculating air valve is stuck in closed position, these are produced by the exhaust turbocharger (pumping in the direction of the closed throttle valve). This fault can also occur in extremely cold conditions when the membranes of the overrun recirculating air valves can be frozen solid for a short time just after you start the engine.
  9. P1666 Overrun Recirculating Air Valve - Signal Implausible Possible cause of fault - Overrun recirculating air valve stuck in closed position at times (due to ice) - Overrun recirculating air valve faulty
  10. Please read and follow the instructions in Lost Radio Code FAQ This topic is now closed.
  11. Exact section numbers from the manual would help. Just guessing from the page location it looks like 3.4 liter engine (page 87) and 3.6 liter engine (page 235).
  12. Always be carefully to not over-tighten the coil pack screws.
  13. P0300 is multiple misfires. P0302 Cylinder 2 Misfire Detected P0304 Cylinder 4 Misfire Detected P0306 Cylinder 6 Misfire Detected Possible cause of fault ♦ Improper handling of a block heater Fault in ignition system: ♦ Mechanical or electrical fault in spark plug ♦ Spark plug connector faulty ♦ Bar ignition module faulty Fault in fuel/air mixture: ♦ Tank filled with incorrect fuel quality ♦ Tank driven empty ♦ Mechanical or electrical fault in injection valve ♦ Oxygen sensor faulty ♦ Fuel filter soiled ♦ Mechanical fault in fuel pump Fault in exhaust system: ♦ Catalytic converter damaged (flow severely restricted) ♦ Kink in exhaust pipe ♦ Muffler faulty (flow severely restricted) Fault in valve drive: ♦ Fault in timing adjustment of inlet camshaft (VarioCam) ♦ Outlet camshaft timing incorrect ♦ Hydro push rod faulty ♦ Valve seat or valve faulty Fault in intake system: ♦ Leak in intake distributor P0352 Bar ignition module on cylinder 2 Possible cause of fault The wiring might contain the following faults: ♦ Open circuit in signal wire ♦ Short circuit to B+ in signal wire ♦ Short circuit to ground in signal wire ♦ Short circuit to B+ in ground lead ♦ Open circuit in ground lead ♦ Open circuit in power supply line ♦ Short circuit to ground in power supply line ♦ Incorrect assignment of ground lead and positive lead Following components can be affected: ♦ Bar ignition module faulty ♦ DME control module faulty In my experience if you have one bad coil pack it is best to change them all.
  14. Many times PET shows parts diagrams for multiple models. To properly use PET to identify parts for your specific car you need to enter your VIN. (This only works with"real" PET at a dealership. Hacked version don't allow parts lookup by VIN.)
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.