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Can some one tell me where the charcoal canister is located in a 2005 porsche boxster? I've read that it's possibly in the driver wheel well but before I get in there I wan to be sure. I'm having the problem of after I fill up the car won't start unless I pump the gas. From what I've read it's the canister that's the problem so I want to see if something is blocking the fuel vapors. Thanks

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  • Admin

Sorry, my mistake - your car is a 987.

Yes it is on the drivers side but access is through the front trunk. You will need to remove the luggage compartment lining to get to the upper plug. and remover the two torx head screws.

Then remove the inner wheel well lining and disconnect the canister fittings there (underneath the canister as you lift).

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Ye it Is a 987. Thank you so much. I'll give it a shot this weekend. One quick question do you know if I'll need to replace the canister or do u think something would be blocking it? The car doesn't want to start after I fill up. I have to pump the gas and keep it revving to keep it started. After that it starts on it's own. I've read in the forums there may be a clog or possibly a filter is clogged? I'm not sure just thought I'd ask. Thanks again. You've been a real help.

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Ye it Is a 987. Thank you so much. I'll give it a shot this weekend. One quick question do you know if I'll need to replace the canister or do u think something would be blocking it? The car doesn't want to start after I fill up. I have to pump the gas and keep it revving to keep it started. After that it starts on it's own. I've read in the forums there may be a clog or possibly a filter is clogged? I'm not sure just thought I'd ask. Thanks again. You've been a real help.

Usually it is not the cannister that is the issue, it is more often one of the control valves that acts up................

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I took out the trunk lining and the right driver side wheel well lining and the canister was on in the wheel well. Does anyone have a diagram on where the canister is located? I also read on other forums that it might be under the battery. Does anyone know? Thanks.

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I took out the trunk lining and the right driver side wheel well lining and the canister was on in the wheel well. Does anyone have a diagram on where the canister is located? I also read on other forums that it might be under the battery. Does anyone know? Thanks.

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  • 3 weeks later...
  • 2 weeks later...

On any 987, access to the canister is entirely in the front trunk! You don't have to do anything in the wheel well to remove the canister. To gain access to the canister remove the black plastic cover over the brake booster. Its infront of the battery, near the center of the vehicle but slightly towards the pass. side. The cover is held in with maybe 8 phillips screws. Once that is removed you will see there is a plastic bracket that holds the canister to the body, if I remember right its held in with a T40 screw. After that you have two "quick" disconnect lines on the bottom of the canister and one electrical connector on the top of the canister. Its kind of a beast to get out, the connections on the bottom of the canister are tricky to get to.

That being said, it sounds like your problem might be the tank vent valve getting stuck open. This valve is the only entry way for any fuel vapor to be getting into the engine. The tank vent valve is located under the intake manifold on the bank 2 (drivers) side of the engine.

Edited by PTEC
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Thank you so much for your help. I'm going to give it another shot this weekend. It's annoying to have to keep pushing the gas and hesitating before it starts after I fill up. Just a question, If the tank vent valve is the problem is this something I can fix or would I need a new valve? How can I test if it's working properly? Thanks again.

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  • 2 weeks later...
  • 2 weeks later...

I found the valve and I have a replacement valve from the dealer. My only problem is I can't get to it and the valve came with a vent tube attached. How can I get to the valve and remove it. There's a screw under the manifold holding the vent line and valve in place. How do I get to it to remove it and also where do I plug in the other end of the vent line. It looks like the opposite end of the vent line is something I can get to through the wheel well. Any help would be appreciated Thanks

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I figured it out. I had to remove or loosen the manifold by unscrewing 4 bolts then I was able to get to the purge valve. I had to cut the hose a little because I couldn't remove it with the tight space. Then I folioed the vent line attached to the purge valve all the way down into the wheel well almost. I had to remove the tire and then at tech the vent line. It was pretty tedious but I did get it. Because space is very limited in the engine space. Thanks everyone for your help.

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  • 5 years later...
On 8/24/2010 at 11:37 AM, JFP in PA said:

Check the OBD II manual for codes associated with the EVAP system, they have the test procedures for the valves.................

 

Where would I get a OBD II manual to test valves for a 2007 Cayman S that is throwing P0445 and P0446 codes?

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  • 4 years later...
On 8/23/2010 at 9:16 PM, JFP in PA said:

Usually it is not the cannister that is the issue, it is more often one of the control valves that acts up................

 

I'm having a lot of trouble filling up my 07 boxster base. Basically, I can't get the pump to go more than a few seconds at a time before I hear what sound like fuel backing up the filler neck and the pump cuts off.

 

My durametric isn't showing any codes.

 

Do you have any tips or advice for what to look at first? I've taken off the wheel liner and nothing looks wrong, so I'm going to dig into the funk next.

 

The car is new to me and there's evidence of a mouse infestation in the frunk in its past.

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Welcome to RennTech :welcomeani:

Noting your comment about rodents, there is a flap valve in the gas fill neck that is operated by a combination of a switch and magnet that has to open for gas to flow in.  It is located on the side of the filler neck itself.  I would start there, checking the associated wiring for damage.  This diagram if for an earlier Boxster, but you can see the controls near the top of the filler neck, yours should be similar:

 

spacer.png

 

Good luck, rodent damage is always a pain to work on.

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9 hours ago, JFP in PA said:

Welcome to RennTech :welcomeani:

Noting your comment about rodents, there is a flap valve in the gas fill neck that is operated by a combination of a switch and magnet that has to open for gas to flow in.  It is located on the side of the filler neck itself.  I would start there, checking the associated wiring for damage.  This diagram if for an earlier Boxster, but you can see the controls near the top of the filler neck, yours should be similar:

 

spacer.png

 

Good luck, rodent damage is always a pain to work on.

 

Thank you sir. I joined in part to seek your sage advice. 😄

 

As you say, things look a little different in the filler neck on my car -- to put it another way, I believe there really isn't much there(?):1478335553_ScreenShot2021-03-15at4_24_57PM.png.c7d4d24bbe5c0bb11376f969e8d3a189.png

 

I don't really see anything obviously amiss in the wheel area.

Any suggestions about what I might be dealing with/looking for? I'm guessing I'll be looking in the frunk as I can't see anything of interest under the car either.

 

Many thanks.

 

Edited by Far M
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