"Incorrect Purge Flow" -Durametric Fault code...
 

"P0441 Evaporative Emission System
"Incorrect Purge Flow Present"

Does anyone know what that means?

I have experienced two rough starts. Once just after filling the tank. (Hot restart) And once after sitting for maybe an hour. (warm restart)

Sounds like some sort of 'vapor-lock' problem.

Anyone BTDT?

I did find this on rennlist
...or a loose gas cap. :-/

I can't imagine how any of those faults could cause the rough starting.

hmmm

The fault is caused by you evap purge valve. the rough start is caused by fuel vapor going directly into the throttle body because the purge valve is stuck open.

Wow! Great first post. Thanks!

I'm amazed that the fumes could be so dense to give such a hard start, but that certainly does fit.

Anyway, I'm now trying to locate the valve.

There is this valve (shown in red) which is inline with the "carbon canister line" (yellow) ...which is mounted next to the throttle body, lower right.

http://forums.pelicanparts.com/uploa...1256774868.jpg


And then there is this valve (blue) on the Carbon Canister (brown).

http://forums.pelicanparts.com/uploa...1256775154.jpg

..Does anyone know which it is?

Its your first pic the one in red.
it is not to hard to replace but you will need to lift the bank two ignition coil cover. driver side while looking at the engine

Thanks!

Just to follow up...

In addition to removing the coil-pack cover, I found it best to unplug the injector leads.

Also, there is a very nice quick-disconnect on the line at "A" (below) --press the white button to release..... which helps free up the line so that one can get the line separated at point "B" (below) --that was a PITA to get loose.

http://forums.pelicanparts.com/uploa...1258163072.jpg

yeah at the shop i just remove the part from the "b" hose in the car. A very big PITA!

If you have to do it again, definitely take it loose at 'A' first. -- My first attempt was to take it apart at 'B.' Even the hose-clamp was a PITA, as it had the clamp 'ears' on the backside.

With the back few injector leads off (and released at 'A') the whole mess can be flexed up and forward, where you can wrestle with the connection more easily. --I don't know why they put a hose clamp on that end.

So did this fix your problem?

Yep.

I took apart the valve, just for fun. It has a mesh filter in there, and a very small valve opening. What's more weird is that the design seems to be normally closed. ...so how in the world enough fumes made it to flood the intake manifold is beyond me.

Anyway, the new valve, and zero issues.

What is the part number?

948-110-202-01

Thanks.....got it and have it installed.....not too bad to install.....

Just did this replacement
 

I just did this replacement and I thought I would post a few tips. The clamp in the rear is a PITA to remove, especially if the clamp clips are rotated towards the back as mine were. What worked great for me was I disconnected the front hose, then pulled the assembly out a little further and used a pair of tin snips to cut the old tubing. This allowed me to pull the house out with the troublesome clamp and rotate it so that could get to the clips.

Just make sure that you have correct part.

Need the hose #31
 

Hey gang,

I am in the process of replacing the vapor canister purge valve assembly. While trying to remove the existing one, the hose #31 (highlighted yellow) in the drawing above cracked. I cannot seem to find a part number for some reason. Can anyone out there point me in the right direction? :confused:

I believe the part number for #31 is: 955-201-366-03

I'm getting a P0441 from my 2006 Cayenne TT-S. And when I take off the fuel cap with the motor running I can hear a sucking sound. THen after I fill up the tank the truck does not want to start correctly till I the 4th attempt.

I'm getting different part numbers and would like for someone to verify the correct part for my 06 CTT- S model. Wondering if hte S means anything for this part?
94811020203

or

Part #: 948-110-202-01-INT

or

948 110 202 01

Anyone?SmileWavy

Purge valve for that one should be 948 110 202 03.

Just had the same problem.
No start for three or four tries at the pumps after filling up.
About $130 CDN for the part and .9 hours labor.
Replaced by the good people at Turn 3 Autosport.