Porschelibrarian

P0455 Leakage in fuel tank system Diagnostic conditions D Vehicle speed = 0 km/h D Engine speed = 0 rpm D Correction factor, height > 0.73 D Coolant temperature upon starting the engine may be no more than 6.8 K above ambient temperature D Coolant temperature when engine starts > 3.8 °C D Period for which the engine needs to have been running before ignition is switched off > 20 minutes D Ignition has been switched off for at least 10 seconds. D Ambient temperature 4 … 35.3 °C D Active charcoal filter load < 3 for minor leak D Fuel tank fuel level 10 … 54 litres D Battery positive voltage 11.02 ... 14.5 V D No fuel tank filling D No faults detected for ambient pressure sensor, coolant temperature sensor, vehicle speed sensor D No output stage faults detected for DMTL pump motor, DMTL switch-over valves and tank vent D No fault detected for tank vent (flow) E The diagnostic conditions can also be established using the PIWIS Tester via the short test "tank leakage test". After the test has begun, the ignition must be switched off. F NOTE E In this context, please also observe the function description. Possible fault causes E Tank cap not closed correctly, leaking or missing E Purge air line leaking E Tank vent leaking E DMTL (Tank Leakage Diagnostics Module) leaking E Leakage in fuel tank system Page 140 of 398 07/20/2006 Function description Tank leakage test/DMTL – Tank Leakage Diagnostics Module F Note E The tank leakage test is performed only on USA vehicles. Construction of the tank leakage diagnostics module: The diagnostics module consists of an electric motor with a small air pump, switch-over valves and a reference nozzle. In addition, the modul is heated so as to prevent the forming of condensation and ice. Procedure of the function: E The pump is operated via an electric motor and conveys air through the reference leak. The power consumed during this process is determined. E The switch-over valve switches and the air current is now directed into the fuel tank. The power consumed during this process is also determined. After a waiting period dependent on the fuel tank fuel level, it must be at least as high as the power consumption was during the reference leak test if the tank system is leak-free. E The system is identified to by leaking if the power consumption is lower during the actual leakage test as it was during the reference leak test. E An evaluation of the power consumption levels when the pump is started and after the switch-over valve has switched serves to identify faults within the tank leakage diagnostic module (e.g. pump blocked, motor spins at idle speed, valve does not switch etc.). E The diagnosis of heating, motor and switch-over valve is performed via the output stage of the DME control module. P0456 Leakage in fuel tank system Diagnostic conditions D Vehicle speed = 0 km/h D Engine speed = 0 rpm D Correction factor, height > 0.73 D Coolant temperature upon starting the engine may be no more than 6.8 K above ambient temperature D Coolant temperature when engine starts > 3.8 °C D Period for which the engine needs to have been running before ignition is switched off > 20 minutes D Ignition has been switched off for at least 10 seconds. D Ambient temperature 4 … 35.3 °C D Active charcoal filter load < 3 for minor leak D Fuel tank fuel level 10 … 54 litres D Battery positive voltage 11.02 ... 14.5 V D No fuel tank filling D No faults detected for ambient pressure sensor, coolant temperature sensor, vehicle speed sensor D No output stage faults detected for DMTL pump motor, DMTL switch-over valves and tank vent D No fault detected for tank vent (flow) E The diagnostic conditions can also be established using the PIWIS Tester via the short test "tank leakage test". After the test has begun, the ignition must be switched off. F NOTE E In this context, please also observe the function description. Possible fault causes E Tank cap not closed correctly, leaking or missing E Purge air line leaking E Tank vent leaking E DMTL (Tank Leakage Diagnostics Module) leaking E Leakage in fuel tank system Function description Tank leakage test/DMTL – Tank Leakage Diagnostics Module F Note E The tank leakage test is performed only on USA vehicles. Construction of the tank leakage diagnostics module: The diagnostics module consists of an electric motor with a small air pump, switch-over valves and a reference nozzle. In addition, the modul is heated so as to prevent the forming of condensation and ice. Procedure of the function: E The pump is operated via an electric motor and conveys air through the reference leak. The power consumed during this process is determined. E The switch-over valve switches and the air current is now directed into the fuel tank. The power consumed during this process is also determined. After a waiting period dependent on the fuel tank fuel level, it must be at least as high as the power consumption was during the reference leak test if the tank system is leak-free. E The system is identified to by leaking if the power consumption is lower during the actual leakage test as it was during the reference leak test. E An evaluation of the power consumption levels when the pump is started and after the switch-over valve has switched serves to identify faults within the tank leakage diagnostic module (e.g. pump blocked, motor spins at idle speed, valve does not switch etc.). E The diagnosis of heating, motor and switch-over valve is performed via the output stage of the DME control module.

The cheapest Sach clutch kits are on Ebay. A couple Sachs distributors are selling on there below the price they offer to a few Porsche parts resellers. Also check out Vertex Auto. They put together a Sachs clutch kit for even less. I think the retail price for a set ( clutch, pressure plate, throwout bearing, etc,) is like $329 for 2004 boxster. And it includes actual Sachs clutch o Call and ask for Sidney or Mike.

Most of the ECU boxes and other electronic computer components are covered in the "Cayenne Diagnostic Manual"

Porsche has made some supplements to the 981 WSM for the GT4 and Spyder. I thought the most fun one was about tracking the car. .WM 0300IN Add mntnce race track.pdf WM 1X00IN Tech data.pdf

The best tool for all part information is the actual PET 7.3 program and database that the dealers use. They do not use the PDF version that is somewhat available online. With the actual PET program one can find parts by name, term part number, find what models use the same part, part updates, etc. One note is that to use PET one needs windows 32 bit OS.

I thought this a good place to check this out. Another Porsche owner upgraded his 986 from t he original 15 in wheels to 17s and now his speedo is way off. He went with Porsche factory 17 wheels and proper tires size. Does one have to adjust or recalibrate t he speedo after changing wheels even when staying in factory wheel/tire size combo?

First the eBay seller you mention only has PIWIS 1 units listed or sold on eBay and the PIWIS 1 goes up to 2010 and will not scan the Macan. I have also run into a few shops that had units from China. All the China units from 3 different vendors) are running the PIWIS II software on VM so the laptop runs slow and PIWIS II which Porsche tech will tell you runs slow runs even slower. And I know a few shops have had problems with them and there is no support from China when a problem occurs. PM me and I can help you with a 3rd alternative....

Before getting into the PIWIS vs Durametric conversation, I would strongly recommend the Professional version not the enthusiasts Durametric. It is not limited in how many cars it can access so if and when one may sell it the Professional cable resells for just about the original price. So now there goes most of the difference

The actual Porsche OEM parts program and database that Porsche dealers use is PET. Both PET and Partslink24 are by Lexcon and the main difference is that Partslink24 must be online and PET can be installed on computer and does not use online access but partslink24 has VIN filter capabilities and Lexcon has locked out VIN info from PET unless one is a registered dealer. As mentioned Partslink24 is either $40/month or $30/month if contracted for a year. One advantage I like in PET is the parts usage feature that shows all models that use the same part. And the diagrams on Autoatlanta are from PET.

Most of these questions are covers in the 981 WSM. I know it's hard to get but if you PM or email me I can try to help you. Also PET 7.3 covers the 981 with complete parts info, exploded views and more.

As I said it should. I presume pst2 unit failed? I prefer to insett HD in IBM 600e. Faster and color and repairable. .

It should but you wil need to transfer the kts card too.

I recommend you buy the clutch kit complete, save a couple hundred and have a professional do the job. As to whether you should do the job yourself.. answer one question.... Would you drop your engine or transmission from your car yourself? And do you have the complete WSM for the 997? If you need the Porsche WSM or PET or .. send me a PM

Please note that the 3.6 and 3.8 have different parts numbers. The Carrera S is cheaper than the 3.6 at Pelican. Go figure. Johan I gave that as only one example of the wide range in prices for the identical parts. The one that started the thread has a 997.1 so that is what I answered specifically. And since I have PET 7.3 U366/94 I am quite aware of the part numbers, uses, etc. So to paraphrase Seinfeld " NO PET FOR YOU!"

I have a 99 996 cab and the windshield frame ( hard 2 piece plastic) is coming lose from the bottom on each side. We are about to get to rainy season ( I know you guys in California need some of it..) and I was hoping there was a fix/repair besides buying an entire windshield assembly.. Is there a prior thread or discussion? Thank you

The 2005-current Porsche wiring diagrams are in a very large program called WDS. It has all models, year by year with color diagrams detailing each wire and identifying them by color coding, current etc. The program also makes each wire easily traceable by clicking on one wire it highlights the entire run in the diagram. It can run separate from PIWIS or PIWIS and I know it works on windows. PM for more information.

BTW you should buy the clutch on Ebay. They are selling the complete Sachs clutch kit for less than many Porsche parts suppliers can buy them. It seems that some direct distributors are selling them online cheaper than they are selling to their vendors. Here is an example Ebay has Sachs clutch kit for just under 500 and Pelican is almost 850 ( Vertexauto is listing it over $100 less than Pelican). http://www.ebay.com/itm/SACHS-OEM-CLUTCH-KIT-2005-08-Porsche-911-997-Carrera-S-/230513661688?fits=Make%3APorsche&hash=item35abaf56f8&vxp=mtr http://www.pelicanparts.com/catalog/SuperCat/0951/POR_0951_TCLUTC_pg1.htm#item0 http://www.vertexauto.com/ShowItem/286598%20Porsche%20997%203%20Piece%20Clutch%20Kit%20-%20Sachs.aspx

I was was using a PIWIS 2 on a 2011 Cayenne and got two codes but no instructions on procedures to repair the problem causing the codes.

I know there is a plethora of information on the IMS but I have never seen a bad IMS bearing or an explanation of the problem besides it causes our engines to crap out. I found an interesting video online and thought I would share....

I just ordered a set of black mesh grills from ZUNSPORT for my 99 996. The total price including shipping to USA was $185 and I used promo code ZU042010 for a 20% discount.

You mean something like this? And ofcourse just as an example and for educational purposes only. WM 720955 Replace seat frame - ac.pdf

I was looking for information on the Varioram 993 engine regarding Valve sping adjustments and measurments but in the WSM I only see information on the earlier (non varioram) engines. Is it the same or different measusments and such? Thank you

I don't think the PST2 will work on the 997 unless he can get the elusive PST2 update 27 ( that includes the 997) that I have only seen a screen shot and a unit that a mechanic from FVD was using. And that unit from Porschecable is the old Chinese Durametric Clone with version 3.1 and is extremely limited on the 997 and can not be updated as it will brick the cable. However it is available on EBay for about half the price on that website.

I have the complete and updated set of Porsche WSM, OBDII, Diagnostic and each year wiring diagrams for the 996. They cover just about everything except rebuilding the transmission. Well perhaps that's because Porsche never gave part numbers in PET for the transmission internals until 2006) The manuals are in PDF and unlike the ones online they are updated with both engines and changes thru 2005. I like being able to search, print out the pages needed, and not worring about getting the book dirty for next time.