How The VW Evap Purge Valves N80 Fail
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- เผยแพร่เมื่อ 9 มิ.ย. 2024
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Today we take a look at more failed VW parts. This is the show where we look at how VW parts work, how they fail, and ways we can diagnose failures. We are looking at the Evap Purge Valve also known as the N80 valve.
How VW Evap systems work.
What the Evap Purge Valve does
How Evap Purge Valve works
How Evap Purge Valves fail
Signs of a failing Evap Purge Valve
Diagnosing an Evap Purge Valve
Is this a DIY part?
And More
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Thanks for your generous efforts in educating the VW owners of the world . Look forward to future videos as a Gen 6 Golf owner .
Thanks for this quick and useful overview of what the N80 is and does! Even for nonspecialists like me the Bentley vid is well worth watching at least through its full, animated description of what the entire evap system does. When they got to the part about how the N80 is _pulsed_ to control how much recovered vapor is routed back to contribute to combustion, I realized why your vid included a "not recommended as a test" label at the point when you mention just hitting the N80 with 12-V dc to listen for clicks.
still a very helpfull video , this fixed my P0441 fault code on a VW Golf mk4
This video is a gold!! So much useful information is shared in such a short period of time! All is clear, gives nice recommendations and explains potential problems caused by the failed purge valve. I do get several errors from the OBD tool, which I am leaned to connected with this failed part. Will give it DIY try.
Thank you so much for the video, @HumbleMechanic!
Always very informative and easy to understand - Keep up the good work!
I HAVE LEARNED ALOT FROM CHARLES. I CAN TOTALLY UNDERSTAND WATCHING HIS VIDEOS, AND HE EXPLAINS VERY WELL. AWESOME! AND TO ME,,, THE BEST!
Hey bro thanks for these videos you have showed me and helped me understand so much about vw parts
very helpful DIY information. thanks.
Hey back again. Just went outside and checked the wiring connection to the purge valve and bang its working correctly. Loose connection. Thank you for that comment you said about wiring in this video made me check it again to be sure.😁👍👍
just replaced my n80 valve 20 minutes no more hard starts after fuel fill ..tnx bro
That was super insightful and very well presented. Thank you!
thank you
Thanks Charles for showing how this value functions, it's a more detail explanation - than I got from the VW dealership!
Glad to help. :)
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Very useful info. Thanks Charles!
very informative, working on a 2007 a4...looked at the famous n80 valve but the culprit ended up being the leak detection pump...when testing between terminals 1 and 2 there was no continuity. thanks!
thanks for the info , your videos are awesome and informative
Very helpful. I have a P0441 code (Incorrect purge flow) on a B5 A4 and was reading from a lot of sources that it could be the canister. I'm happier knowing about this part as one of these from bosch is about $40 as opposed to a $200+ Canister
My Golf had the same code, changed the N80 sensor and code cleared itself.
Your advice was awesome. After I topped off my gas tank, I couldn't get my car to start. It kept coughing..... Had you not mentioned "don't top off your fuel tank..." at the end of the video, I would have never made the connection.
Swahiliangift70x7 same here. My Jetta runs like a champ except when I fill up the tank. Awesome video very informative and easy DIY project!
@@parkerdm9636 I'm still confused so what run your car to e then fill it?
No, it means when you are filling past when the pump clicks off. Like dont try to make it to an even number.
Hi Charles
Thanks for the great videos, in this video you mentioned a VW scan tool or a High end scan tool, I have been struggling to figure out which diagnostic tool wss best to used and was hoping you would be able to help me out getting the best one, thanks in advance
Wow. Just as I started having this problem
Thanks for the video, really informative, I did it on fault code p2188 on Kia Cerato/Forte 2015 along changing with O2 sensor. 🙂
Great vw info as always
I'm just about a minute and a half into this video and you made me feel crazy old! LOL! you mentioned the "Way Old 1551" ! When I was a tech at VW, that was our scan tool. Ha Ha Ha! I always like your videos. Thanks for making them. Since I've been out of the tech game since 2000, you help me with repairs I do at home. Cheers!
Thank you Charles! I watched this video a long time ago but my gti just started having a small evap leak and a system lean with up and down idle rpm and it brought me back here. Gonna replace my n80 and cross my fingers!
Hi Charles.
Thanks for all the great videos!
Any thoughts on the following simultaneous codes?
04759: Connection charger - Throttle valve, pressure drop.
08584: system too rich at idle, bank 1.
04243: bank 1, fuel measuring system 2, malfunction.
08825: intake air system.
I ha an exhaust leak first, then rough idle, had exhaust repaired, still got rough idle (but not for a while now) and now have these codes.
Thanks for any help if you have the time.
Regards John.
Do you have a vid on how to remove Evap valve on 2.0 TSI (200)
About to be a lot of people watching this video again. 17 GTI, just got the recall noticed. Super informative video! Might be able to take care of this myself.
Thank you so much for your video mark dependable auto
Talking about the 1551 we purchase long time ago a new 1552 it help us quite a bit back then it was in 1997 1998 era.
Hey thank you for all the info you give us .
Question, my daughters 2012 jetta 2.5 is giving me a headache with same thing 😂😂
Well made video. Thank you!
@HumbleMechanic Great video and explanation. I'm trying to test my valve but I have a 2016 Jetta with the 1.4 so it seems like the whole assymbly must be removed and not just the valve. I thought I could try to pressure test it by disconnecting the input side but I can seem to get it off whatever it connects to (canister?). Does it slide? Pinch? who knows...
Nice 1, Charles!
Just had a rough idling/stalling 1.4 Mpi AUD engine. Scan brought up p1426 evap purge valve open circuit. Found electric connector unplugged there. Strange world!
A lot better now, just monitoring a p0141 O2 bank1 sensor 2 heater circuit malfunction.
Hi everyone
After change it, is possible the engine getting to work temperature faster than it was before ?
Grettings
Appreciate this is was posted 6 years ago but very applicable now. I have 2011 Fabia TSI that has a fault when at running temperature in "coughs" intermittently at from about 1200 rpm in 4th and 5th gear, and has produced no fault codes. I have a general engine analyser that is showing 630psi on the fuel rail and goes up to in excess of 1500psi when driving. I can't get hold of what the fuel rail pressure should be. I currently working through the fuel system cleaning and checking sensors. I've just disconnected this sensor and there's no fault code shown. Any ideas, and what the fuel rail pressure should be? Thanks for the video, it's good so I've subscribed.
thanks for your help allot
Thanks it helped me so much
I had this happen on my rabbit and it unfortunately did damage to the fuel pump, purge valve, gas tank, and the charcoal canister. I never got a check engine light, I found out because every time I went to fuel up it would only pump a half gallon or so before foaming up the filler neck and shutting the fuel nozzle off. Do you have any recommendation on checking the filler neck check valve to make sure it is open? I think this same issue may be happening on my mk5 Jetta now.
This was helpful, my 2014 Jetta is having this issue, but will it also cause the car not to start for about 30 at a time randomly? Or could that be another issue? Any help would be greatly appreciated
2 questions...
Is there any way to clean this valve... lets say with carburetor cleaner for example ???
If you look inside it has something like a screw... what does this "screw" do ???
Hi Charles from Australia.
If you had a faulty purge valve that is stuck open and you have over filled your tank, could this create a situation where liquid fuel could be sucked into the manifold and then create an oil dilution situation as to excess fuel being drawn into the combustion chamber?
Cheers
Jeremy
Well that explains why my car is hard to start after getting fuel, mine was stuck open! Replaced it and no more CEL and it starts right up after fueling.
This video saved my ass as well for the same reason.
Hey Robert, just curious, do you remember what your CEL was? I'm trying to chase down a P0456 and I'm thinking about replacing this part. Just wanted to see if yours was the same. Thanks.
Love the show!!
D Eck Thank You so much.
Very welcome! We need more people like you in this industry!
I need to test the purge solenoid on a 1.2 VW POLO (2011 model). Electrically it appears to be doing what it should, but when I removed the valve and tested it with a Mightyvac, the results were a little inconclusive. Basically, it will hold vacuum from the inlet manifold side, but it slowly leaks when vacuum is applied to the fuel tank side. Does this mean that the valve is good or bad? thanks.
Hey, thanks for this, just wondering if you can give some advice on a 2010 Polo (1.2L) that has a 4.36v on the positive side of the 2 prong connector, there is no short to ground (engine off .2v on either wire). The Check engine light is on with a P1426 code.
Thank you for the video. My car would have a hard time starting after I filled it up and had no codes. Today I replaced the purge valve. Right after, I took the car for a test drive and notice my car was idling too low when in drive at a stop light. Can you think why this is happening? Thank you
Thanks for info
hey charles! awesome shows man keep it up!! you think you can do a failed parts video about the infamous n75 valve? recently had one go out on my alh and was wonder if there are so signs of the valve going bad other then limp mode! cuz mine was still working but only half way!!
jessy6464 That is a great one! I will keep my eye open and try and find one.
A failed N75 gave me a Low Boost code. Swapped it and KaBoom boost is back to life
Would this cause rpm fluctuations at a stop if the PCV valve/breather hose and intake manifold is good? 2010 GTI
This valve could turn on the EPC Light and the traction control and show an ESP failure? I have an Audi A6 3.2 2007
Good Day, as always thanks for the awesome content. Quick question. I own a 2013 VW Touareg TDiV6 180Kw. For some time now only in warm weather days the car has extremely rough idle on cold start. It lasts for about 30 seconds and then all is good. It really only happen randomly. In winter i never have the issue. Does diesel vehicles also have the N80 evap purge?
Just getting p1425 which seems electric but thinking if I should just replace whole thing. Gas gauge is reading empty so not sure if its correlated or not. Great video though! (B5s4)
I have the same problem with my Holden Captiva...every time I refuel it wont start straight away...I have replaced the fuel filter and fuel pump but still hasnt helped the problem...do you recommend fixing the purge valve??..any help will be greatly appreciated
Is there a risk of fuel tank implosion if the n80 valve is broken? I had a fault code about the evap system a few months ago and now during warm weather I can hear bubbling from the fuel tank after I've driven the engine warm. Is there any quick fixes to avoid the possible implosion of the fuel tank until I have the time to fix the issue, what ever it is? I have a 2005 Octavia II 1.6 FSI.
Charles, what's the most you think a dealer should get away with for replacing this part? Looks like a $25 part in most places, and easy to get to (2011 Jetta SE). Your opinion is appreciated.
Hello Charles! Am having a P-0444 (EVAP valve open) engine light. On my 2003 VW Rialta RV Euro-van. Replaced the N-80 purge valve and still get the light (even after clearing it). would you suggest checking the vent solenoid next (does it have one)? Also having problems fueling the van now. Nozzle clicks off at the pump. Feel that replacing the canister is too much for me to do myself. And want to check all my options before I take it in to a mechanic. Thank you!
Could a secondary injection fault code be because of this? It also says incorrect air flow on the code. I dont have a fancy scanner to tell where exactly the problem is.
Hi! I have a vw lupo 1.0 mpi(auc) with P0401 - 35-00 error EGR System: Insufficient flow.
The EGR Valve and pipe are very clean and I still got the issue, do you have any idea what is wrong with it? Thank You!
You're the best. Any idea if there's a good indie VW specialist near Cambridge/Arlington/Lexington MA? This and other issues are piling up. I solve them very slowly myself...
have you ever seen one of these cause a crank start issue? I have a 2002 Cabrio that has fuel pressure but the injectors aren't getting a signal from the ECM. I have replaced the fuel pump relay and the crank sensor. I have good spark, and fuel pressure, but it won't fire unless I introduce fuel directly to the intake. I'm getting a P0445, and a P2441 as well as P0418 and codes for injector circuits 1-4 "low".
Great video! I don't have 001089 - EVAP Emission Control Sys: Incorrect Flow but the last two times I filled my tank it had a very rough start! It took a few cranks and runs really rough for a minute or two. After that it's fine and starts without issues until I fill up again. This just happened after using Jectron Fuel injection cleaner but I think the EVAP purge valve might be the culprit? Do you think this might be my issue and do you have any more info on testing this with VACCOM measuring blocks 070 an 071 that you mentioned?
Here's my current codes. I usually get the first two codes and then once it throws the 3rd code (17511 - Oxygen (Lambda) I get a check engine light. I just bought a Mityvac vacuum test kit I can use also but figured it would be good to do a VAGCOM check first.
3 Faults Found:
16683 - Boost Pressure Regulation
P0299 - 35-00 - Control Range Not Reached
16891 - Idle Control System RPM
P0507 - 35-00 - Higher than Expected.
17511 - Oxygen (Lambda) Sensor Heating; B1 S1
P1103 - 35-10 - Performance too Low - Intermittent
Readiness: 0000 0100
Forgive my lack of knowledge but would this cause the pump to keep shutting off or would the be from a clogged evap hose or something? I have a 99 passat with the 20v 1.8t
Hi, I have a question regarding my 2003 golf gti. almost every day I have a stalling and rough idle/general rough running issue. I never get a check engine light and rarely it throws a bank 1 rich code. I have watched the short term fuel trim when it is running rough and stalling and it fluctuates aggressively between rich and lean state. I have replaced the MAF sensor, with a genuine Bosch part and am looking at the next thing either being the evap system or an O2 sensor... any thoughts? thanks in advance!
How did you removed the filter? I'm always getting a pending incorrect flow code. How many cycles do it need before CEL turns on?
Great video is there anyway on the n80 purge valve for a Volkswagen Touareg you can show me the location where it is while looking over the motor.
Mr HumbleMechanic I am getting a clicking noise from the passenger side when I start my car, I was told that it could be a anti shudder valve, could this N80 valve be what they are talking about or are they two separate things.
i have 5 codes that shoot off two for the eval, air injection relay pump- secondary, mass air flow sensor, and i dont. i have looked over your video and idk if i should also change my mass air simce i have had problem with a code popping up continuously even after i cleaned it
Have an 08 R32 with 77k. Car hesitates at high Rpms & idles rough when letting go of the brake pedal until it fuller goes forward it goes away. Replaced the spark plugs and coils. It idles a lot better but the problem still persists. Check engine light came on and one of the VW Techs said it could be the N80 Valve. Could that little thing cause this whole ruckus?
Charles HELP!!! I cant put gas in my MK7 R tank. I watched that EVAP video and the MK7 appears to be set up differently than shown. I don't know if we have an ORVR system on the R. I have tore everything apart and tested everything the erwin lists. There was gas in my EVAP can. I cleaned it out and everything tests correctly but I still cant put gas in. Is there a roll over valve in the vent or filler tube that could be defective? I have also pushed and held the filler flapper open with the 980mm hose and it didnt work. I also unplugged the tank vent line at the EVAP and it still wont take any gas. I dont think its the suction jet pump because I can tell its pulling from the driverside to the passenger side as it should. Plus that pump is not serviceable on the NA R. What do you think it is?
Sup Charles...had a walnut shell cleaning which helped a lot with improved power...replaced a water pump on the 2013 CC which solved a bad leak.....now im getting a lean code...I cleaned the mass flow sensor ...the code came back on it was 2177
Im thinking from watching this vid its the purge valve...great breakdown I will get one today and let cha know!
I just had this part replaced on my '13 Jetta Treadline, are you saying it is not a good idea to fill the tank in any case like mine or just if you have a fault?
We had an issue with an polo vivo 2010 model not starting on hot days standing outside...my boss recommend to block off valve with an ball bearing in the inside? No fault codes and vehicle start every time....is it possibly hurting something ells? Just curious otherwise it works
Very informative! I have a 1998 Passat V6. Would this likely be the cause of me having the codes P1137, P0422, P1129, P1127, P1141, P1139, P0411, and P0442? I replaced the MAF sensor hoping it was the cause of all my problems but that wasn't so. It has a rough idle until it runs for a bit and tries to stall when little pressure is placed to the gas pedal. Also doesn't like to shift until 3400 rpm in Auto mode. Tip is fine. Getting the fuel pressure checked soon as well. Any advice is appreciated!
+David McCoy yeah man I do have 1999 audi A6 do same thing to me when I start the car it feel like tiger and shakes for a bit, when it drives it going to use more gas maybe because it shift gear to late usually when I go 100p/h it around 2000rpm but now it goes to 3200-3400 rpm and sound bad trying to replace many things but nothing now going to change a VAPOR CANISTER PURGE PCV VENT VALVE will se how it goes
Will replacing this part in my 08 gti fix the fuel cap light that comes on randomly and seldomly? I have yet to get a CEL along with the fuel cap light though. My fuel cap is new from the dealer which helped reduce the frequency of the fuel cap light coming on. Any advice will be appreciated!
Great channel. Thanks for posting these, I just subscribed. I have an error code P2402. The read out says "Code P2402 indicates that with the engine running above a specified RPM the PCM detected a high voltage on the eveporative emission system leak detection pump control circuit" Would the N80 trigger this fault? I have a 2012 Jetta S with the dreaded 2.0 l4 engine. Thanks again for posting these
THanks, this was the cause of my Lean Fault ! Audi TT 2.0 TFSI 2007 (France). I was able to blow inside the old one, not in the new one.
Nice!!!!
What were the symptoms
Thank You! I've been chasing a fuel rich/intermittent boost issue that was compounded by a bad temp sensor on my wife's MK1 TT for months now. It's one of those multiple problems manifesting with odd issues. I watched your video, took my N80 valve off in about 2 min gave it a sharp tap on the table and voila, gobs of powdery crap. I'm not sure if swapping it out will solve all the issues I'm having, but I'm confident the blockage is at least a compounding variable. Thanks again!
Did you fix this problem? I’ve got a mk1 tt and I’m finding it’s building up with pressure a lot in the fuel tank
Hi mate!! Glad to see this... I have 2011 Tiguan and now it has hell lots of problem. Intake manifold was changed but still the engine light is on. Finally the dealer wants to change the salonoid sensor valve and they are charging $596 to do this saying there is no communication between the intake manifold and sensor valve. I have driven with engine light on for one week now as dealer put my appointment after 3 weeks for the sensor valve change. I felt its too expensive to repair and I am quite confuse to take it to Vw for repairs though I have booked it or to the other mechanics. Vw dealer is saying they have genuine system to diagnosis and find the fault. My question is can it be repaired outside and will it be repaired. It still shows p2015 code. Very unhappy times. Dealer is charging me $220 for parts and rest for Labour.
Question, my Jetta had the fuel rail bolt recall. I wasn’t notified so didn’t know and turns out my car has been leaking fuel for a while. A few weeks ago it started dumping fuel while driving down the expressway. Had it towed to the dealer, they “fixed it” but now I have an active CEL with EVAP flow. Would the fuel leak cause this to go bad?
Could this cause a rough idle, and maybe throw a faulty throttle body code? I’ve had a shop try and do a relearn but it’s unable to do a throttle body relearn with a cel. Have already replaced throttle body.
Hi Charles, I have an 04 Audi A4 1.8T and mine is making a clicking noise. Does that mean its working or broken?
I had a P0171: System Too Lean (Bank 1) that I had been chasing for 3 months and after spending close to $445 on various parts, the problem was with this purge valve that fixed the loss of power and lean code issues I was having...
My tiguan is throwing a P0456 right now. I’m away for work about 2 hours from home. Is it ok to drive home w that code before i’m able to fix it w either the fuel cap or replacing the purge valve? (if that’s what the issue is?) i have a cheaper scan tool but it did scan P0456 consistently. Just don’t want to worry too much about getting home. Thanks in advance! love your channel!
Hi,iv got a golf gti mk5,I’ve changed my N80 valve my charcoal canister but if I use my OEM petrol cap and drive a few miles and open the petrol cap I’ll get lots of blocked gases and a sound like the petrol tank has just expanded so iv got to drive with a universal smaller petrol cap to let the gases out,do you have any advice? Iv been told iv got to drop the talk to unblock the pipes that run along side the petrol talk as there blocked 🤷♂️
i pulled a vacuum on this n80 valve from the TB connection and i pulled 30" and it decayed to 5" in a minute so i wonder if that might be my p0171. i did a vacuum test at the TB by taking that n80 hose off and i had 19" of vacuum so i'm wondering if this little bit of decay will cause that p0171 code to set? the maf was .01 at idle 700 rpms if that is normal? and .02 at 1500 and .3 at 2000 rpms so that checked out with a known good 2016 chrylser that it's maf had the same readings at the same rpms. thanks
Any videos of replacing The Whole evap n80 purge valve with factory lines to the intake without removal of intake and cutting it into Existing lines 2011 mk6 gti
So I know this is a pretty old video at this point, but...
Does an Audi A6 C7 (2011 - Present) suffer from the same issue with the N80 valve? I had an Audi A4 B7 (2005.5 - 2008) before this car, and ended up having to replace the N80 twice during it's run.
My current car is giving some similar codes, and while the shop has diagnosed it as possibly an issue with the PCV (something else I had to replace multiple times on the old A4) I wanted to check all my bases before throwing out the $1000+ required for that repair!
Could you guys do a video on where the charcoal canister is??
Got a p1426 error on the board computer, so went out and replaced it. The errror remained so how do I know if it's an electrical issue? (it's a 2004 Polo 9N)
I had every one of those codes for the open... mine is on the way. Its a little tight on a beetle but seems simple enough to change.
recently bought a used 2013 tiguan - seemed fine but a few days later engine light started going off - took it into my local VW dealership and they said it needed carbon cleaning and spark plugs - $975 later it went off again - drove it with light on and when we were able to get back in they say it needs a purge valve another $900. Starting to feel like they are taking advantage of me. Shouldnt they have been able to diagnose the valve when they diagnosed the need to carbon clean. Any suggestions?
hey i have a 2009 vw passat 2.0t with codes p0444, p2008, p0243 and p0010. any guess on what parts it is
I have two errors on my 2007 Passat. PO455 and PO171. These both pint, per your video to the N80 failure. I am curious if needing to replace the N80 would this in general require a Cannister replacement? And though DIY, if typically it opens a can of worms, is it still better to take it to a shop?
It will throw these codes on acceleration and it is very difficult to start after putting gas into the tank.
Hi Charles, not sure if this is an appropriate comment but I am kinda stuck. I am getting a P2400 - Evaporative Emission System Leak Detection Pump Control Circuit/Open" on my 2013 GTI. I noticed you said something about not topping your tank off, and before this fault showed up, I had to fill up with a leaky gas can... would spilling fuel into the little hole in the chamber behind the gas cap door cause this part to fail?
I have a 2013 beetle throwing a P2450 code Evaporative Emission System Switching Valve Performance/Stuck Open . Any suggestions?
Please advise if I unblock my turbo salnoid I have p0243 and if I plug it in I have p0171 any advice, AUDI A4 B8 1.8 TSI
hi humble mechanic I have a 04 vw beetle I have a code p2279 also some misfire codes I replaced pcv breather on valve cover also when I unplug the purge valve I think it should be fully close and I install vacuum gauge on purge canister side and I'm reading vacuum you think purge it's not sealing
Hey there! My EuroVan acts like a flooded carb engine after filling the gas tank - takes a lot of cranking and runs roughly for a few moments after it finally turns. Otherwise runs okay.. safe bet that this is the culprit?
hi Charls , do you know if 2009 Jetta (Bora on México) 2.5 5cil. has egr valve ? thank you best regards....
It sounds like this could cause fuel trim issues. Could it do so without throwing a code? I'm getting positive fuel trims at idle and negative fuel trims at wide open throttle. Oddly enough, my fuel trims are excellent while cruising on the interstate.
so weird... a friend contacted me today on Facebook about his car problem.. his gas cap light kept coming on. he replaced his fuel cap with no luck. after searching around, i learned about this part. i told him to try it first, as its pretty cheap.
I had the EXACT problem. First I got tons of fuel cap open alerts, then a P0455 error....