Hi everybody, I'm sure this has been posted before, but I've read through many forums about this and have found no solutions that has helped me. Im getting a Diag Code P0441, incorrect purge flow.

When ever I clear the code, it re appears at 50-100 miles or so, I need to pass smog fairly soon so I need to have this problem resolved . Ive replaced the vapor canister purge solenoid, and the valve, with no success. Ive also read that cleaning carbon residue inside the hoses connected to the emission systems is supposed to help, i did that and found no carbon build up inside the hoses. At this point, I am at a loss what to do, and I need to fix this ASAP, any matter of help in this would be greatly appreciated.

P.S. if anyone has successfully cleaned their emission hoses of carbon build up, and cleared the code. Please let me know what you exactly did, because I may have missed something when I did it.



I have a 1997 Trans Am :p

 

Bump. Anyone?

 

bump....

 

Old post from 2008 that might help you-

https://ls1tech.com/forums/lt1-lt4-m...urge-flow.html

Purge solenoid along the right side of the intake, cannister near the tank inlet, even a gas cap, or lines that tie these parts together...

 

not for nothing ,but hoses on these cars from factory get rotted and cause leaks to set codes make sure those plastic hoses are not kinked or rotted

 

As said above check to make sure the hoses are on correctly. If you can blow through the purge solenoid then it is stuck open. The vaccum switch is what tells the pcm that it is flowing. I attatched the hoses diagram for ya.

 

Thanks everybody, ill give it a try.

 

So I changed the canister, the valve above the canister, as well as the vacuum switch, and im still having the same issue. What do you all suggest I do next?

 

Check the purge solenoid again. If you can blow through it then it is stuck open.

 

replace your gas cap....it is the "typical" 0441 cause. if not that then the parts you have already changed...I would give the gas cap a look

 

If you haven't looked at this yet, go over it and look for broken connections. There are at least 2 places where a rubber coupler is used on the plastic > metal connections. One is under the floorboard on the driver's side- it was rotten and loose on my red car. The other one you might want to see is on the forward side of the tank, visible near the upper left corner of the top illustration below:

 

You guys need to understand what the code is for. The description states that the pcm detected purge flow during a non purge condition, meaning that the pcm did not tell the purge solenoid to open yet it did. There can really only be two things that cause this. A stuck open purge solenoid or the purge vacuum switch.

 

Ok so the purge solenoid was open, air was going through, I got the part and replaced it. I wiped the code, and now I'm just waiting to see if it comes back, Ill let you guys know Thanks!

 

Also, turns out one of the three tubes in the fuel line is starting to come apart, I can hear the air coming out of it so I sealed it up temporarily, do you guys know what the part number is? or where I can order it?

 

you need to be more specific as to what hose it is.

 

If it has air instead of fuel in it, it's the vapor return line. (ok I couldn't resist the smartass remark- sorry. ). Right- like 96TransAmboosted said, where is the break on the car?

 

Ya its defiantly the vapor return line, anyone know the part number and where I can order it? Thanks!

 

lol, is the break near the tank, under the driver's seat near the framerail, or between the purge and the charcoal cannister?

 

Its on the driver side, to the left of the Intake Manifold, where the 3 lines are coming out of the fender. The line leading into the vacuum witch.

 

So you need rubber hose inside the corrugated sleeve itself? IIRC, that corrugated tube isn't split. If you unclip the 3 line bundle from the fenderwell and remove the clip you can probably slide the tube far enough both ways to do what you need to do...