uabchris

Im having same problems, ABS/air bag light then car died. I now have new battery and alternator tested fine at Advance Auto. If I remove the neg terminal it will sometimes go dead (bad alt?)... and sometimes not. No battery/engine light but I did pull a P0650 pending code.

Did you fix yours?

Ok - you have posted this 4 times now. Please wait for a reply.

Sorry, just looking for feedback from multiple owners with similar problems to see if anyone found a solution. Any ideas on your end (loose connection/VR..)?

Im having same problems, ABS/air bag light then car died. I now have new battery and alternator tested fine at Advance Auto. If I remove the neg terminal it will sometimes go dead (bad alt?)... and sometimes not. No battery/engine light but I did pull a P0650 pending code.

Did you fix yours?

I am having the same problem! Alternator tested good at Advance and battery is brand new. P0650 code but no check engine or battery light. Sometimes while running the car dies when I pull off the neg terminal...sometimes not. All fuses good. Sounds electrical...?

Chris Hewett

00 Boxster 2.7

Im also having a charging problem: had the alternator checked at Advance Auto and it checked out ok, but when I start the car and remove the neg terminal it goes dead sometimes...sometimes not. Also a P 0650 pending code. Seems like an electrical problem as the car runs until it kills the battery but no battery light. Sometimes it charges and runs ok after I recharge the battery...anyone???

Thanks in advance!

Chris Hewett

Nope, I have replaced the fuel pressure switch, shut off valves and no luck. About the only thing left is the evap canister as there is some type of pressure issue still going on. Currently side tracked at the moment with a charging problem (wiring issue)...

Chris

Chris, Notice about a year ago you had the same issues as I have been having: Car occassionaly wont start; turns over but wont start. Current theory is that it might be moisture in the fuel. I also have P0446. I was having an occassional misfire. Debugged ignition, no problems there. Worst of problem is after rain. Put fresh fuel in and gas dry, and then it runs ok. But still have P0446. Did you ever get your's fixed? Thanks

Just cleaned the entire throttle body with MAF cleaner during tune up. I used a standard OBD-II scanner to pull the codes. Still driving daily and no problems except at fill up. I wonder if anyone else has experienced this problem?

UPDATE: I now have a P0446-EVAP canister shutoff valve (function). I can clear it and it goes away for a few days. Could this be related to my problem? Isn't it located behind the RH fender?

Any other info is greatly appreciated!

Thanks again,

Chris

Any ideas, guys?

Thanks!

Chris Hewett

00 Boxster

2.7 5 speed

165,000 miles

:help:

I hate to resurrect this topic but it is really giving me fits. Here is the history:

QUOTE (uabchris @ Aug 21 2008, 10:45 AM)

Well, its been a month now and I am still trying to pinpoint the source of my 00 Boxster not starting (only after adding fuel). I fuel up then have to depress the gas to the floor and then starts after about 5-10 seconds, runs like crap until the computer resets itself then I am good to go until the next trip to the gas station. I get an occasional P0446 (charcoal canister) code but all lines are clear. To troubleshoot the shutoff/purge valves I decided to fuel the car while running. As soon as I inserted the gas nozzle (which depressed the tab at the end of the fuel neck) the car started to run rough. As I put in a few gallons the car wanted to stall so I stopped and removed the nozzle...the idle returned to normal. When depressed, the tab at the fuel neck seems to operate 2 valves: The purge valve behind the RH headlight inside the fender, which I relpaced...no fix. There is also another valve next to the purge valve...could this be the problem? The other valve seems to be out of sight but close to the base of the neck on the fuel tank.

Sorry I,m a pain but my Boxster's getting old. Anyone have any ideas?

* The other valve next to the purge valve?

* Any valves, etc, at the base or on the filler neck?

* Any of the other air valves on the neck near the charcoal canister?

* Or ???

UPDATE:

I just replaced the tank pressure sensor and no luck. At this point I have replaced the pressure sensor and 1 of the 2 purge valves behind the RH fender. Any ideas? Do you think it is the the shutoff valve and where is it? There seem to be a few controls on the filler neck, also.

After more investigation, the problem seems to be directly related to whatever is operated off of the tab on the fuel filler neck, when I depress it with my finger (like inserting gas nozzle) the car starts to run rough and I also hear 2 valves actuating. When gassing up as I put in a few gallons the car wants to stall so I stopped and removed the nozzle...the idle returned to normal.

Thanks in advance!!!

Chris Hewett

00 Boxster

2.7 5 speed

165,000 miles

I second the micro switch.....

I second...my Boxster has 165K and still has the original pads on the rear. My light has been on /off for about 2 years now. In my opinion if you replace the pads when the warning light comes on, it is a waste of money as I still had 40-50% of the pad left when the light first came on.

I have a 2000 Box S with 54K miles. About 10k miles ago I was told that the rotors were getting close to the limit (0.5 mm from the min) and to begin thinking of replacement. I decided to hold off until the brake wear warning light came on because my normal street driving is pretty easy on the brakes. I recently had the brake warning light come on for a day, then go off again. Rumor has it that this intermittent light is a pre-cursor to the light staying on for good (sounds odd, but . . .). Even once it comes on I understand there is no rush to replace (although I'd like to find out how much pad is remaining at that point). Keep in mind that the brake warning is based on pad wear, not rotor thinkness. Anyway I'm starting to plan for a brake replacement (rotors and pads) - I guess that'll be my Christmas present. Parts for all 4 wheels run about $900. This is a fairly easy DIY. Here are good instructions: http://www.bombaydigital.com/boxster/projects/brakes/

Hi,

Also check the bottom of your door panels for water. I am experiencing wet carpet and found the base of door panels to be wet. I suspect the vapor barrier needs to be resealed behind the door panel. Check that...

Chris hewett

2000 Boxster

162K miles

Nope. 1st one died at 95K. I have pretty much replaced everything on the car but the rack and the tranny. :wrench:

Wow, 162,000 miles. That's the most I've seen for a Boxster. Are you on the original engine?

Thanks for the help, your advice makes sense as I can hear both purge/shutoff valves operate upon depressing the tab on the neck. I will try the wire and the sensor and see what happens. :thankyou:

Chris

U mean the shut off valve ? I would check the triger wire+ground to B+, if the purge valve is operting fine.

possibility is U got a faulty tank pressure sensor or shutoff valve,,, have a feeling most likely it's the sensor?

Stefan's pic

What happens for this system to work is the EVAP canister's shut off valve is closed and the purge valve is opened. This in turn allows vacuum to build up in the system and is measured by the pressure sensor. When a specified vacuum is reached the purge valve is closed. Now the pressure sensor measures the given vacuum over a set time. Should there be a leak the vacuum will drop accordingly. When the shut off valve is faulty no vacuum is built up at all. The purge valve when faulty allows the vacuum to be built up , however it doesn't close so the sensor never has that constant base reading to start by(PCA)

Well, its been a month now and I am still trying to pinpoint the source of my 00 Boxster not starting (only after adding fuel). I fuel up then have to depress the gas to the floor and then starts after about 5-10 seconds, runs like crap until the computer resets itself then I am good to go until the next trip to the gas station. I get an occasional P0446 (charcoal canister) code but all lines are clear. To troubleshoot the shutoff/purge valves I decided to fuel the car while running. As soon as I inserted the gas nozzle (which depressed the tab at the end of the fuel neck) the car started to run rough. As I put in a few gallons the car wanted to stall so I stopped and removed the nozzle...the idle returned to normal. When depressed, the tab at the fuel neck seems to operate 2 valves: The purge valve behind the RH headlight inside the fender, which I relpaced...no fix. There is also another valve next to the purge valve...could this be the problem? The other valve seems to be out of sight but close to the base of the neck on the fuel tank.

Sorry I,m a pain but my Boxster's getting old. Anyone have any ideas? :help:

* The other valve next to the purge valve?

* The valve at the base of the neck?

* Any of the other air valves on the neck near the charcoal canister?

* Or ???

Thanks in advance!!!

Chris Hewett

00 Boxster

2.7 5 speed

162,000 miles

Well, its been a month now and I am still trying to pinpoint the source of my 00 Boxster not starting (only after adding fuel). I fuel up then have to depress the gas to the floor and then starts after about 5-10 seconds, runs like crap until the computer resets itself then I am good to go until the next trip to the gas station. I get an occasional P0446 (charcoal canister) code but all lines are clear. To troubleshoot the shutoff/purge valves I decided to fuel the car while running. As soon as I inserted the gas nozzle (which depressed the tab at the end of the fuel neck) the car started to run rough. As I put in a few gallons the car wanted to stall so I stopped and removed the nozzle...the idle returned to normal. When depressed, the tab at the fuel neck seems to operate 2 valves: The purge valve behind the RH headlight inside the fender, which I relpaced...no fix. There is also another valve next to the purge valve...could this be the problem? The other valve seems to be out of sight but close to the base of the neck on the fuel tank.

Sorry I,m a pain but my Boxster's getting old. Anyone have any ideas? :help:

* The other valve next to the purge valve?

* The valve at the base of the neck?

* Any of the other air valves on the neck near the charcoal canister?

* Or ???

Thanks in advance!!!

Chris Hewett

00 Boxster

2.7 5 speed

162,000 miles

On the way home from work. my 2000 996 reached 140,000 miles and still running strong.

:renntech:

:cheers: :jump: :drive: :thumbup:

My 200 Boxster has 162000 (2nd engine at 95K) so far so good!!!

Chris

My 2000 Boxster has beeen refusing to start lately. It cranks and just won't fire. It's like it's not getting spark for some reason. When you let it set, it sometimes fires right up and has no problem. It also sometimes won't start on first, second, or more tries, and then fires up on subsequent tries. It seems to be random, because sometimes it immediately fires. Once started, it runs fine though.

Any thoughts?

Andy,

I have this same problem with my Boxster, a while back and now every time I refuel. Do you have an evap cannister fault code? If so you may be getting a potential vapor lock due to any/all of the following:

Charcoal cannister

Vente tube

FUel filler neck shutoff /purge valve

All located inside RH wheel liner by the filler neck. This may help...I have the P/N's too.

Chris

00 Boxster

161K miles

Thanks heaps, I will try your recommendation and see what happens. I have fixed numerous problems with my Boxster so if I can be of assistance in the future, just let me know. I also have all of the repair CD's... which i have learned is a must if a Boxster owner.

Thanks! :thankyou:

Chris

Where did you get the repair CDs from? Are they ToolPants' DVDs or other CDs?

Thanks!

I got the Porsche Dealer Workshop CD manuals and PET from Ebay. Some guy was selling copies I guess from the originals. Would you like a copy?

Chris

That sounds like the problem I had. The shop replaced my vent tube, purge valve and charcoal canister. I've filled the car about 6 times since the last repair without a recurrence of the problem.

Good luck.

Thanks heaps, I will try your recommendation and see what happens. I have fixed numerous problems with my Boxster so if I can be of assistance in the future, just let me know. I also have all of the repair CD's... which i have learned is a must if a Boxster owner.

Thanks! :thankyou:

Chris

:help:

I was wondering if anyone found a fix for this problem (quote below) from Sept 24 2007. I am having the EXACT same problem...only at refueling. Occasional P0446 (carbon cont valve/air vent valve?). I checked all evap lines and all are clear and fuses ok. Could I have a problem with purge valve or shut off valve on the fuel filler neck? I basically put gas in the car, wont start unless you fully depress gas pedal, then runs rough for a few minutes before smoothing back out.

QUOTE (Jeremy Cottrell @ Sep 24 2007, 01:01 PM) *

Well, the problem isn't putting gas in the car, but not being able to start the car after it has been filled up. I checked fuse E6 anyway, because there may be a connection if you suggested it. The fuse is there, and intact

Thanks in advance,

Chris Hewett

2000 Boxster

2.7

160K (65K on new engine)

Well, the problem isn't putting gas in the car, but not being able to start the car after it has been filled up. I checked fuse E6 anyway, because there may be a connection if you suggested it. The fuse is there, and intact.

Hi Jeremy Cottrell,

Did you ever fix your problem from Sept 24 2007. I am having the exact same problem you had last year.

Thanks in advance,

Chris Hewett

I am having the same problem except only after I gas up...yes, I know it sounds crazy, but after I hold the pedal to the floor it starts after 5-10 seconds. I did get a P0446 Evap canister CEL about a month ago but it has not been back. I even tried removing the gas cap by itself but the problem can only be replicated after gassing up. Must be a pressure issue??? I have replaced all the general tune up components and performed all cleaning with no luck. Seems to be common as the Boxsters approach 100K.

Still searching...

Chris

If you figure this one out let me know. I sometimes have the same problem, Engine will spin but won't start. After a try or two it starts and will go for two or three weeks without incident. BUT...the 0446 code comes up on occassion. Sometimes it is in conjunction with this starting issue, sometimes not. I have looked through all of the forums and PPBB and I have yet to get to a point diagnostically to start taking things apart or ordering parts. I too use mine as a daily driver.

Good to know that I am not alone on this issue. I will keep digging and let you know if I find out anything. Will yours also start after fully depressing the gas pedal to the floor while spinning the motor?

Thanks,

Chris

Just cleaned the entire throttle body with MAF cleaner during tune up. I used a standard OBD-II scanner to pull the codes. Still driving daily and no problems except at fill up. I wonder if anyone else has experienced this problem?

UPDATE: I now have a P0446-EVAP canister shutoff valve (function). I can clear it and it goes away for a few days. Could this be related to my problem? Isn't it located behind the RH fender?

Any other info is greatly appreciated!

Thanks again,

Chris

No Idle Control Valve on egas cars.

It would not hurt to clean the throttle body but that is not likely the starting problem.

What did you use to check the fault codes?

Just cleaned the entire throttle body with MAF cleaner during tune up. I used a standard OBD-II scanner to pull the codes. Still driving daily and no problems except at fill up. I wonder if anyone else has experienced this problem?

Any other info is greatly appreciated!

Thanks again,

Chris

Get your fault codes read you could have pending codes.

Have you checked your ignition switch?

Loren,

No pending fault codes and replaced the ignition about a year ago. I read on a past post where the dealer advised to hold the pedal while starting as I described, and it resolved the problem. Does this reset something? Being e-gas, do I have some type of electrical problem that is related to the pedal operation? It is funny this only occurs at fill up after removing and repacing the gas cap.

Thanks in advance!

Chris

First things first, thanks ALL for the tips on my last post (coil pack on #6). Now new week, new issue. Had this problem about 3 years ago, then recently about once a monthly, now every time I gas up and go to start the car it spins but will not start unless I hold the gas pedal to the floor. It also runs like s*** for a minute or so then clears up (like the computer resets itself). Then I am fine until the next fill up. I initially thought fuel pump but that would not explain the fix from pressing the gas pedal. I replace the fuel filter with every oil change and run Techron religiously. New MAF recentyl. Full tune up recently. No CEL's. Fuel pressure reg?

Any ideas guys? :o

2000 Boxster

2.7 E-gas

157000

60K on new engine