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kenhurst

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  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    2000 Boxster S
  • Former cars
    1973.5 911T
    1974 914 1.8L
    1978 911 SC Targa

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  1. Cool. Sounds like that Durametric may be getting to the heart of the matter. Let me know if it ends up being your purge valve. That's the valve that near the engine (at least it is on a Boxster I think), right? Oh, and maybe I should bring my car to your inspection station. Guess I can't do that though. Sure hope it ends up being a simple fix. Ken
  2. I'm pulling the fuel nozzle out as soon as the pump shuts off and being careful not to overfill. However, it's possible that previous prolonged overfilling could be the reason for a saturated charcoal canister. My gas cap checks out OK when the inspection station tests it (Texas procedure). I'll be digging into it myself soon and I'll report back whatever I find. Got same problem -- trying to figure out what part to purchase. Is this the same part as I found on Pelican 993-201-221-01-OEM for $75.50? Listed as Activated Charcoal Canister for Tank Ventilation? Pelican Charcoal Cannister thanks, mike Hi Mike - I'm assuming you need the canister for a 911 or 944 - and it looks like this part is basically the same however it's appearance is completely different from the charcoal canister I needed for my 2000 Boxster S. I went to Boardwalk Porsche in Dallas to get mine. You might want to have them check their parts catalog for a part number for your car and see if it matches the Pelican Part number. I will say this - the new canister solved the problem up until just this past fall - sometime around Sept. or Oct. the problem returned! So obviously I haven't found the complete answer to this problem - only a partial answer. My guess is that some other part - maybe a valve, purge or other - is causing the canister to fill up quickly - this is assuming that the return of the problem is in part because of the new charcoal canister getting clogged again. I had my car in to the dealer (Boardwalk) for some other repairs - insurance claim - and they checked over this issue but couldn't immediately point to one single known part or failure. They would have to spend considerable time testing, etc. to find the cause. I can't afford this kind of work from a dealer or even from an independent so I'm just going to have to keep plugging at it myself until it's resolved. Besides it kinda fun to finally figure out the mystery. Well, OK, not always that much fun - more fun to drive than fix. Good luck with figuring out your car issues! Ken
  3. Problem Resolved!! Finally! For me all that was required was to replace the charcoal canister. Although it's possible that there could be some other problem causing an error code P0446 AND the related starting issue that I have experienced (see above), I strongly suspect that charcoal canister replacement is the fix for this relatively rare combination of symptoms. While I was in that area of the car to replace the canister I checked the two valves, shut-off valve and vacuum control valve, mounted together in a housing forward of the canister. Some other Boxsters evidently have these valves mounted on the canister itself (as per the diagrams in my Bentley manual) but on my car they're connected to the canister and other components by hoses running from that housing. It's a simple thing to remove it and take the valves out and test them by applying 12v to their connectors to see if they're functional - I used temporary leads from my car battery for this test. For me the biggest headache with this job is getting the wheel well liner connectors and those pesky hose connectors going into the canister loose. Lots of pinching and pulling in the right places and they finally came loose. I bought the carbon/charcoal canister from Boardwalk Porsche in Plano, TX for $201.40. So 155 miles after disconnecting the battery and resetting the computer, the codes were gone (I also had a P1128, P1130, P0507 showing which from research here and elsewhere appears to indicate a bad MAF sensor - so I took it out and cleaned it with CRC Electronic Cleaner) and I finally passed my state's (TX) inspection. I didn't take pics of this procedure but I was greatly aided by the photos Loren posted in this thread: http://www.renntech.org/forums/index.php?showtopic=13955 although the hoses, etc. going into my canister are routed a bit differently on my car (2000 Boxster S). If you're planning to work on this yourself I would also recommend going to the Boardwalk Porsche website and downloading the parts catalog for your car - the diagrams are helpful. You can find their online catalogs at http://login.dealerskins.com/SiteSpecific/...frameset_en.htm. I'm not personally connected with Boardwalk Porsche in any way - they've just been exceptionally helpful and their part prices have been very competitive. Ken I'm pulling the fuel nozzle out as soon as the pump shuts off and being careful not to overfill. However, it's possible that previous prolonged overfilling could be the reason for a saturated charcoal canister. My gas cap checks out OK when the inspection station tests it (Texas procedure). I'll be digging into it myself soon and I'll report back whatever I find.
  4. I'm pulling the fuel nozzle out as soon as the pump shuts off and being careful not to overfill. However, it's possible that previous prolonged overfilling could be the reason for a saturated charcoal canister. My gas cap checks out OK when the inspection station tests it (Texas procedure). I'll be digging into it myself soon and I'll report back whatever I find.
  5. P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit Thanks for the diagram Loren - but I suppose this would mean that there is not chance that the shut-off valve itself is faulty? I think I'm at the point now where I strongly suspect the canister is saturated and/or the shut-off valve has failed - it would be great if I didn't have to replace both to find out. And it could be a blocked purge air line which I will check while I'm at it. I think it was you that posted some really helpful photos on that area including how to remove the canister, etc. Ken
  6. This has been exactly my problem on a 2000 986S - code P0446 and difficulty starting the car immediately after fuel fill-up - but it does eventually start when I floor the throttle - then I have to keep the revs above about 2000 for about 1 or 2 minutes or it will die - but then it's just fine until the next fill-up. Weird. SEARCHING hasn't come up with anything definitive, just a lot of people who say try this, try that - including the admonishment to the OP to search and the link to something totally unrelated. It would be very helpful if the few of you that have had this same condition could volunteer the procedure that fixed it. From the experiences that have been related here it looks likely that it's a clogged/saturated charcoal canister, blocked line, or faulty/blocked shut-off valve on the canister - or all three. Once I figure out what has caused this on my car I'll be glad to post the info here so that maybe other owners won't have to go through the expensive process of replacing all suspect parts until the problem is solved. Oh, and I already know the translation of the P0446 code. But that doesn't actually tell you how to fix the issue, it just steers you in the right direction.
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