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jesthed
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Using the key in the door should override the Anti-Theft system. Then ignition on should reset key. If this is not happening you may have a issue with your module under the dirvers seat. If it is wet under there you will want to find out why right away and dry it out completely. JES
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Here are the pics of the FVD modded DME. FVD has decided not to offer any warranty on this item but i did not talk to them directly. I am going to call them this week and see what they say. JES
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Hmmm so it seems like your car was wired for shut off valve and sensor but the the new "97" harness was missing wiring and pins. For me its the opposite my "97' is not wired for the valve or sensor but the DME is looking for them. Something changed somewhere in the MY97 there must be a programming change that was issued. thanks JES
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Stefan can you tell me more? Why did you have to add pins to your car? Thanks JES
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Again sorry for the huge pics. How do i add pics show that they show up reduced size like some of the other post i see? I wish i could fix the spelling on this topic too. JES
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Ok here we go. I verified my bundle it is wired different but that's what the EWD shows. Second i re-pinned the connector by taking pin 43 and moving it to pin 72 reconnected everything - No Help still solid codes. I went to connector X3/1 and discovered 11 and 12 on the female/plug side but no wires or pins on male/pin side! So this sends me right back to what my dealer is saying that this Vin or MY does not have this feature? It must be a build issue and what does my dealer know that we don't know. Todd you have my Vin i am showing a build/birth date of 1/7/97 on my paperwork. i will talk to my dealer this week and see if i can't get the wiring diagram that they are using or some kinda explanation as to why they say that this car does not have this part. I am wondering how FVD got around this? I am going to give them a call too. This mod was completed in 2005 and nothing has changed but the DME programing, the part #'s are the same. I do know that the FVD DME is modified on the inside. I will post pics shortly. Thanks again. Any input is greatly appreciated. JES
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Hey Todd i agree i traced that line as far as i could without putting the car on a lift looking for the sensor. If needed i will get under car and pull shields to see if i can find it. However looking back at the wiring diagrams I am beginning to think that this may actually be a harness pin out issue. 97 HARNESS -----------------------------------PIN----------------------98 HARNESS Carbon Canister Shutoff Valve____________7_________________SAME Tank Pressure Switch___________________43________________Vacant Voltage output to Load__________________54________________SAME Diagnosis – Tank Pump__________________57________________Vacant Vacant_______________________________72________________Differential Pressure Sensor Now I have not verified this with my harness but will tomorrow. There may be other differences in the harness also I probably need to do a pin to pin check on all 88 pins. The only codes that I am having consistently are P0453 and P0447 the other ones have not come back. Looking at the pin out it looks like I do have a differential pressure switch and a shutoff valve as 1 unit but because the harness is wired different they are not wired up with this dme. Can you check this out and tell me what you think? If this is correct i should be able to just re pin the connector at the DME. Could it be that simple? JES
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OK armed with the additional info you guys provided i couldn't wait for the weekend to get here! Today I pulled both wheelwel liners looking for this Valve/Sensor. I figure it has got to be there since the drawing shows it. First we already knew there is no sensor in the fuel pump area but i looked agian maybe i missed it? Second here's a pic of the canister no sensor to be found. I pulled the entire canister out just to make sure. The sensor or wires that you see at the top are for the filler door actuator. Sorry for such a large pic i didn't know how to make it smaller. So again i am having no luck. I am just not able to locate this valve or find a part # for it. JES
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Looks like another member had a similar problem locating this pressure sensor on a 97MY 996 Tank pressure install?. I sent him a PM to see if he ever found it. JES
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Hey thanks Todd i agree i am just not able to find this unit. Maybe if i could find a part nbr or picture it would help. The bentley manual shows pressure sensor right on top, aft of the fuel pump for 98MY and talks about how this is a change from 97MY. Could it be part of the fuel pump itself? JES
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Ok had some time to look over car this weekend and i'm lost. First there are some wiring differences between 97 98 MY. I attached the DME EWD for those that have been looking for them. I started troubleshooting by finding the evap valve that Todd had mentioned earlier to me. When i remove the connector i get an additional code P0444 tank vent valve if i reattach it P0444 goes away. Then tied to find this tank pressure sensor short but could not locate sensor. Bentley manual says it should be right near the fuel pump under the battery. no go no wires no look like anything is missing. Very dusty like no one has been in there in a while. Not good. Check right front wheel well pull liner see charcoal canister and what i though was shutoff valve. Pull charcoal canister and find out that i though was shutoff valve was actually filler door actuator. There is no shut off valve or wiring on my car at the charcoal canister. The spot where the shut valve would go on canister was never cutout. Started checking wire harness looking at each wire for anything obvious but found nothing yet. I could replace the tank vent valve if you thing it would help. I did not look at the maf. So there it is gents. The car seems to be running fine but i would love to rid of this CEL. The 97 EWD does not show a shut off valve or a pressure sensor but a difference pump valve? I was not able to locate this either. So i am batting zero right now. JES 986_MY97_EWD_DME522.pdf 986_MY98_EWD_DME_522.pdf
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Todd i am not saying that you wrong! What i am saying is that you are right, so right that you where able to dianose this car from home. My dealer had no clue when it came to this car! As for the codes i must be doing something wrong because the Durametric software is showing me something different. So P1602 is Battery disconnected, P0477 is open circuit evap valve? No? , P1117 o2 sensor, P0453 Tank pressure sensor short. I attached pdf so you can see what i see. I am running durametric frimware 5.1.0 and select Montronic 5.2.2 JES codes.pdf
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Update! Sorry this took so long but i am back on the road. Todd aka Tholyoak diagnosed a bad or dead DME and came up with a replacement at a very reasonable cost to me. I thank Todd and this board because i would have been out much more $$$ with out them. I am still dealing with some fault codes though P1602 CAN timeout, P0447 shut off valve activated, P0453 Tank pressure sensor, P1117 Tank empty. Again my local Porsche dealership was no help with this and i quote "Checked fault codes and found faults P0447 and P0453 for carbon canister shut off valve and fuel tank pressure sensor for which the vehicle has neither component. The DME is looking for equipment that this vehicle does not have. Check Engine warning light is on all the time. Engine is running fine." :o So i have since purchased Durametric tester and Bentley manual. I have found the carbon canister and the shutoff valve. I need to know where to go from here should i just replace these items? or is there some trouble shooting i should do? Also i now have 2 spare DME's available, 1 turned up from the indie mechanic and the other one was modified by FVD for 996 condition unknown? If anyone needs them maybe Todd knows how to test them.
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rick3000 YES you got it. JES
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Hey rick3000 hope the damage isn't too bad. this is how i jack my car for service - oil change , brakes tire rotation, etc. Using the factory jack points only i start at the left rear but i don't think it should matter which side but rear first! Car is very stable and allows you to insert jack stands and adjust to height that you are comfortable with. Most importantly No Damage! My car is lowered with 18" wheels and side skirts. DISCLAIMER: this is how i jack my car only! try this at your own risk. JES Jacking Insert jack stand - i use a short piece of wood to protect aluminum brace once i have the car up i insert a jack stand in the front and let the car down. then i complete the other side. once the car in up on all four jack stands. i then use the factory jack points to adjust to the height i need to service vehicle. Hope this helps. JES