Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

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)

Richard Hamilton

Contributing Members
  • Content Count

  • Joined

  • Last visited

  • Days Won


Everything posted by Richard Hamilton

  1. Maybe I should try this as a new post. My DME fault register shows P1123 and P1125 fault codes, but I DO NOT get the CEL coming on at all. The car runs fine, but I would like to find out what is wrong sooner, rather than later. The DME actual values I am reading are: Idle Speed - 680rpm Load Signal - 1.3ms Mass Air Flow - 19 kg/hr Hot film mass air flow meter - 1.31 volts Engine Temperature - 90°C Throttle Plate Angle - 0° Ignition Timing - 5.3° crank Specific Air Mass - 17.0 kg/hr Specific Air Adaption - 3.0kg/hr Injection Time - 2.8ms Oil Temperature - 90°C IATS - 27°C ECTS - 92.3°C Oxygen Sensing Cyls 1-3 - 0.9 to 1.0 (varying) Oxygen Sensing Cyls 4-6 - 1.0 to 1.15 (varying) Range cylinder 1-3 (FRA) - 1.02 Range cylinder 4-6 (FRA2) - 1.01 Range cylinder 1-3 (TRA) - -0.36 Range cylinder 4-6 (TRA2) - -0.33 O2 sensor ahead of cat conv (1-3) - 0.1 to 0.7 volts (varying) O2 sensor ahead of cat conv (4-6) - 0.1 to 0.7 volts (varying) Camshaft Position deviation - -3.0° crank Rough running threshold - 8.4 Rough running - 0.0 Segment (A) - 1.0 Segment (B) - 1.0 This should be Segment B - I can't get rid of the smiley! Learning progress, sensor wheel adaption - 0.000 Misfire detection - 0.000 Engine compartment temperature - 60.0°C Oxygen sensor heat resistance ahead of cat conv - 3.2ohms I have checked the fuel pressure, and it is spot on - 3.8 bar engine off, and 3.3 bar at idle. I think all the readings are within the range of nominal values in the manual, except the TRA values that are way out. "TRA - Time Relative Adaptation; a fuel injection adaptation method used to compensate for engine/sensor changes at idle, which are short term & small affecting the AFR, e.g. intake air leaks, and which generally varies equally with +/-values under normal conditions (taken from www.systemsc.com/glossary.htm)". I don't think it is an air leak, because the idle speed and mass air flow are within limits. The MAF sensor readings also seem to be correct, and I think the FRA values being correct bear this out. Any ideas anyone?, and BTW what is the EVAP canister purge valve mentioned in other similar posts? Sorry for the amount of data, but I thought that too much was better than too little. I'm not sure what all these readings mean - I just took them straight off the PST2.
  2. Berny By taking the oil filler cap off you will have introduced an air leak and the ECU will richen the mixture accordingly, hence the rough running. Small leaks, like a leaking cap, can cause the idle speed to raise 3-400 rpm, and again it adversly affects the mixture control. If you have a scanner, plug it in and check the idle speed (should be 680 rpm), and also see if you have error codes. Richard
  3. Sorry to butt in here, but I have a similar problem on my 1998 C2 tiptronic. My fault register shows P1123 and P1125 fault codes, but I DO NOT get the CEL coming on at all. Ignore this - I started a new thread.
  4. I agree with Loren that the third party manuals aren't very good, and the bootleg Porsche manuals are pretty poor quality usually. However, this week I bought one on eBay made by LexCom Informationssysteme GmbH in Germany, which seems to have been made for Porsche, or with their approval, perhaps. It is a properly indexed and bookmarked pdf copy of the factory manuals, and covers 1998-2001 models. If you see one of these, go for it - it's the real deal.
  5. 1qt/1000 miles seems like a lot to me. I change my oil every 6000 miles, and don't need any top-ups between changes. Mine is a 60,000 miler. Piston ring wear could be one cause, but it could also be valve guide wear. If you get a cylinder leakage test done, it would determine if it is one or the other (or both).
  6. Thank you for all the information Jeff. I ordered the wires from my local VW dealer and they should be in today. They were readily available from VAG UK. Maybe all us Porsche guys buying these leads are causing the factory to remanufacture them! ps. I should be able to email you the pictures we discussed on Thursday.
  7. Jeff What is described on "whiteson.org/boxster/mods/obc/" seems very straightforward, and the fact that Paul Marsh's garage shows that he did the mod recently using the switch, inspired me to have a go. Are you saying that it can't be done with the switch? Are the wiring instructions wrong? Those instructions basically show a toggled earth connection to pin 21 for the mode-up signal or to pin 25 for the reset. (Mine is a 98 car). PLEASE let me know as soon as you can if this is wrong.
  8. Sorry Chaps, panic over, I just found Yoseif's DIY page. If anyone else wants the info it is at: http://www.whiteson.org/boxster/mods/obc/
  9. Guys TP - Is there a DIY for this? Paul Marsh - Could you give details of the button and wiring connections you used? Thanks
  10. Loren. Do you have a list of Porsche DME fault codes? I don't mean the OBD2 codes, but the ones that are referred to in the workshop manual. The only manual I have access to is an early one, and I wondered if they have issued an appendix with a decent list of codes. I have DME error codes 27 and 35, which correspond to OBD2 codes P1123 and P1125. Thing is, the CEL doesn't come on and the car runs perfectly at all times. I think the fault must be intermittent and doesn't exist for long enough for the CEL to come on. I was hoping the Porsche codes might give me a bit more of a clue.
  11. Porsche Integrated Workshop Information System. It is the Porsche version of the Bosch KTS650.
  12. You can read the radio code with a PST2, so it would mean a trip to the dealer.
  13. Try www.mytyres.co.uk - select the tyre size and speed rating to search, select the tyre you are interested in, and click on the reifentest.com link. They give grip and wear ratings for most of the N-rated tyres. (Note: 1=best 6=worst). You can get to the site via www.tyretest.com but doesn't seem to include info for some tyres (P-Zero Rossos, for example) I doubt if you would get 30k miles from the fronts of a C4, as they tend to wear more than the C2 and Boxster. 8500 from the rears is pretty poor. I got 12000 from a set of rear Conti's on my 993, with some spirited driving on our winding English roads. Is the wear perfectly even? - they might have scrubbed out early if the alignment wasn't correct. You should get this checked at least once every couple of years, although lots of people have it done annually.
  14. If you look in the 996 TSB's, there is one for dashboard noises - it's 9 pages long!! There are others for all sorts of internal squeaks and rattles!!
  15. Wolfgang Is the LED single or double-flashing? If there is a fault with the system you will get a single beep from the alarm horn when you lock the car, and the LED will double-flash. HTH
  16. Thanks chaps, It is obviously based on the Bosch KTS650, which has network capability. The old PST2 was based on the Bosch KTS500, which became obsolete about 18 months ago. Jeff - do you know if the latest version of the PST2 software includes the 997 and new Boxster? Thanks again
  17. Has anyone seen the PIWIS? Is it notebook based, like the PST2?
  18. Yes, I understand that. The post 2002 cars (both 996 and Boxster) have the fly-by-wire throttle etc. Both the Boxster S and the 996 engine I am talking about are 2003 models. I would like to think that it is simply a case of getting the DME from the 996 and plugging it into the Boxster, but I can't imagine it will be that easy. I'd really like to know if anyone has done this conversion, and can anyone recommend a company that produces a kit to do-it-yourself. The way his post read, I thought that maybe "Eurospeed" was such a supplier.
  19. Sorry, I'm not sure what you mean. The car is a 2003 Boxster S, and the engine is a 2003 3.6L 996. What my friend is looking for is a kit to do the conversion, particularly the electronics. If you can help, please let me know. Thanks
  20. Hi All I have a friend with a '03 Boxster 3.2 S, who wants to fit a 3.6L engine from a '03 996 which he has available to him. The mechanical aspect seems fairly straightforward, but his concern is the electonics. Has anyone here done this conversion? The DME version is the same for both engines and the inputs are the same for both, but the outputs are a bit different. If anyone had some first hand experience they could share it would be much appreciated. Also, if anyone has the wiring diagrams for the DME of both engines it would be nice to see them. Thanks
  • 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.