I have been experiencing that problem of my engine dying when I remove the gas cap. I've searched and searched for the remedy and finally ran across your video. Thank you. Subscribing to your channel and clicking like now.
Thank you, thank you, thank you. After having check engine CODE P0455 Just ordered mine for my 2015 hyundai santa fe. What a pain realizing what the issue was. Changed spark plugs, cleaned the throttle body, put a new head cover gasket seal and nothing. In the process my MAP sensor went bad, and still no improvement. Until a good mechanic suggested the Charcoal canister, and boom, all symptoms match. Hopefully it fixes the shaking and the RPM fluctuations. God bless
Good damn video. I hate that you learned through trial and error. You replaced the purge valve, vent valve, catalytic converter, TPS sensor, etc. The Vent Canister was the problem the entire time. Thanks for trying to save others the headaches. I am trying to diagnose a problem now.
I have a 2000 Ford Focus that will only take $7 worth of gas at the pump to fill up, and it runs out of gas at half a tank. It runs great until I've run it about 40 miles, and then it randomly cuts off. If I let it sit beside the road a few minutes it will crank back up and keep going. I ran across a forum where someone had the same symptoms, and it ended up being the fuel vent system, although he didn't specify exactly what part, so I've been trying to figure that out in lieu of taking the car to the shop. If it's a solenoid under the hood I could easily replace that myself if it's not a pain to get to, and trying to prevent blowing money needlessly. Good info, thanks.
there should be a small diameter line,maybe a 1/2 - 5/8 of an inch running from your filler neck to the tank..this is your vent line.it may have a kink in it or something blocking it. you can try running a piece of wire down it or about 30 pounds of compressed air
My original problem on a 2004 Chevy Avalanche was P0446 (Purge Valve), I replaced the purge valve and the Check Engine Light came back on not too long after clearing the code from the computer. The next code I got was P0449 (Vent Valve Solenoid), I replaced the Vent Valve but I'm still getting a P0449 code after clearing the code. The only thing I can think of is that the Charcoal Canister is going bad. I'm going to replace it and see what happens. Side-note: I do struggle to fill the gas tank at the station, the sensor on the gas nozzle clicks off frequently. That's a sign that the charcoal canister isn't sucking out the fuel vapors from the filler neck properly. And I also get a "Tighten Gas Cap" message when I'm driving. I changed the gas cap but I'm still getting this message.
Well. You would think that it would last longer. I have a '95 Buick regal GS it has 262,××× miles and I've never had a problem with it. Mainly because, I've deleted the charcoal canister. Lol
I did what you said to do, i took off gas cap as soon as i turned on my car and it didn't die, it kept idling fine. But there is a strong gas smell in and out the car and also, i do remember being at the gas station and the pump would stop at 2 dollars then stop again and then it would fill up fine after that, could it possibly be the vapor canister??
Could a bad evap canister also throw a p2422 code ? For a vent valve stuck closed ? I have a 2016 Honda Civic, I have replaced both the purge and vent valves/solenoids and replaced the fuel pressure sensor, I’m just nervous to keep raking out money. Fyi the vent valve had also been filled with water before it was replaced
when you remove your gas cap the extra vacuum may be letting too much air into the engine via a faulty evap purge valve in the engine bay which would stall the engine. To check this you could start the car without the gas cap on . it will probably run fine. The evap purge valve should only let air from the gas tank enter the engine when the computer commands it to. At hot idle it shouldnt be purging i believe. Also i notice it depends how much fuel you have in the tank, if full it wont stall if you remove the gas cap
I need help y’all I got a po446 on my gmc envoy I replaced the purge valve but it still idle weirdly and smells like gas fumes any suggestions thank you
Odd. I have the same symptoms but I got a p0441 code. I replaced both the purge and vent valve. And its still there. I'm going to try the canister next.
Mad help my gas light gauge on my 2000 Chevrolet Malibu goes up and down says I have no gas but when I drive the gas catch it and showed my real gas .. code is P0449 and it states it is a control circuit vent I’m looking it up and it’s showing me different things but I’ve recently replaced purge valve purge solenoid fuel pump fuel filter except for the canister my AC doesn’t turn on and only blows whenever I’m driving can’t switch it to anything kind of weird but I’m going to try that and hopefully that fixes the problem because some of the symptoms you said are the problems of mine
I have a 2002 Mercedes c240. Recently I started having issues at the gas pump where it would shut off every 3 seconds of pumping. The car itself takes about 3-4 restarts to get running properly on cold starts. Surprisingly I’m not getting any codes related to the evap system. The only codes I’m getting are for multiple cylinder misfires, sometimes it’s just 1 misfire that shows. Only thing I’ve done was replace the MAF sensor but that didn’t resolve my issue. Do you have any other suggestions? Can it still possibly be just the evap canister or the vapor canister vent valve? Also would a bad purge valve that’s located at the front of the vehicle cause issues fueling up at the station? Thanks.
I would say that it's probably not evap related, it may be a coil pack or knock sensor. I have seen knock sensors do this. But, being that it's Mercedes your cheaper option may be would be to replace your coil pack. And see where that gets you. Hope this info helps.
@@austinalbright1854 interesting, so what would be the cause of the gas pump shutting off on me every 3-4 seconds at the fuel station? No way that could be related to a bad coil pack can it?
No, no coil pack issues there. Sorry I was addressing the random miss fire. The pump how ever, sounds like your tank float valve is sticking. (try this) next time anytime/before fueling put a pint of marvel oil in your gas tank and see if that helps. Now, your car may smoke on that tank of gas or you may smell some oil burning, but don't worry thats the marvel oil.
@@austinalbright1854 I’ll give this a try and see what happens. I’ll be sure to also give you an update of the results as well. Thanks again for your tips and fast replies.
I've replaced my purge valve and still only stalls after I put gas mine is a 2008 hyundai accent and I want to replace the Purge solenoid or evap canister idk
i topped off my gas once and now have a small evap leak code. How can i fix this? is the code coming from gas getting into the evap canister, if so how can i get the gas out of the canister
Well, yes. That code is more than likely to be from a little gas getting into the canister. You can try and taking off the canister and sitting out in the sun for a few hours, that will allow the gas to evaporate more quickly. Sometimes this helps Sometimes it doesn't. It just depends on how much got into the gas. I hope this advice helps! :)
Hello. It sounds like your float is stuck in your tank. And also, some other things. Like you purge valve, charcoal canister clogged, and vent solenoid bad. You can take it to an O'Reilly's and have them check for codes. Hope this helped
Awesome thank you! I have a GMC Sierra. I got a lot of evap codes. I replaced the purge and the solenoid and the muffler smells like gas and I also have a catalytic converter code, any ideas?
Definitely check your air fuel mixture. If the mixture is rich, it will smell like gas, and it will burn up your catalytic converter. May have fuel entering the evap line causing a rich condition would be my guess.
@@braydinjones6301 The good thing is there's a specific code for the cat so there's no guessing there. Whether something else caused the cat to go bad (like being flooded with bad exhaust emissions) is another story.
@@austinalbright1854 I have an Audi S4 and my evap purge valve was replaced by the previous owner probably because he didn't realize that the line was broken under the car, I got that fixed but unfortunately they had replaced it with a cheap China made evap purge valve and not an OEM Audi German purge, so now I'll be driving when I shift from first to second as soon as my RPMs hit 2500 that valve gets stuck and the car lurches forward, I've been told wrap has nothing to do with how the car runs....WRONG, I took the valve off and plugged the hose with my thumb with the engine running and my OBD2 running I watched my air fuel ratio when I took my thumb off, it went to 30:1 AFM yet commanded was still 14.7:1 and the car struggled to stay running, so this hear verified that evap has everything to do with how the car runs especially in my V8 Audi it's almost not drivable because of the pure power loss. Now I did notice when I bought the car the vacuum boot pressure was normally at 26psi, now ever since I've been having surging and evap codes pop up it's been sitting at 15psi at idle, after 8 months and -15° weather while owning this car, tonight I have finally 100% solved the mystery of the evap purge system, thanks for your video, you helped verify my theory!
That's why I never listen to what anybody tells me. I always try to figure things out for myself, I especially do not listen to the dealership!! Always get a second opinion!
Local stealership just charged me $98 to "smoke test" mine, but didn't actually do a damn thing, quoted me like $1,100 in repairs, and tried to sell me a new Jeep.
Mine has a disconnected line on the canister, and I just over filled my tank today an none of the above happened. Has a code for a large evap leak. Any ideas?
It still sounds like you have a (purge valve) problem to me. Maybe still, you could have a bad canister or purge valve. Or just so happen that, your purge solenoid (right behind the coil packs on the engine)went out on you at the same time you over filled your gas tank. It's one of those three things. Lol😄
Yes, the purge valve is in the same system as the purge solenoid, and the charcoal canister. But this shouldn't cause bad gas mileage, have you cleaned the mass air flow sensor and the throttle body? If those aren't cleaned, that can give you bad gas mileage. If you have anymore questions please feel free to ask. :) :)
@@austinalbright1854 Exactly, thought as much. When i removed canister the pellets start to fall off and it make the car run rich. If i remove all the pellets from the canister and replace it back what will happen?
I have a 99 Bonneville. Can’t put in more than 2 bucks worth of gas at a time. I will try this method out. Any way I can take this system offline easily?
@austinalbright1854 I've got a 1999 Oldsmobile cutlass and I've been having a issue with the gas trying to come back out the filler neck while I'm pumping gas and it keeps shutting the pump off
@@austinalbright1854 hey I changed the fuel pump and purge valve and just recently when I was pumping gas it would pour out of the gas tank and act as if it was full at the rim
I have been experiencing that problem of my engine dying when I remove the gas cap. I've searched and searched for the remedy and finally ran across your video. Thank you. Subscribing to your channel and clicking like now.
Thank you, thank you, thank you. After having check engine CODE P0455 Just ordered mine for my 2015 hyundai santa fe. What a pain realizing what the issue was. Changed spark plugs, cleaned the throttle body, put a new head cover gasket seal and nothing. In the process my MAP sensor went bad, and still no improvement. Until a good mechanic suggested the Charcoal canister, and boom, all symptoms match. Hopefully it fixes the shaking and the RPM fluctuations. God bless
Give him a medal!!! Great Idea. Thanks
Thank you.
Good damn video. I hate that you learned through trial and error. You replaced the purge valve, vent valve, catalytic converter, TPS sensor, etc. The Vent Canister was the problem the entire time. Thanks for trying to save others the headaches. I am trying to diagnose a problem now.
Glad you liked it. It gave me a fit.
I have a 2000 Ford Focus that will only take $7 worth of gas at the pump to fill up, and it runs out of gas at half a tank. It runs great until I've run it about 40 miles, and then it randomly cuts off. If I let it sit beside the road a few minutes it will crank back up and keep going. I ran across a forum where someone had the same symptoms, and it ended up being the fuel vent system, although he didn't specify exactly what part, so I've been trying to figure that out in lieu of taking the car to the shop. If it's a solenoid under the hood I could easily replace that myself if it's not a pain to get to, and trying to prevent blowing money needlessly. Good info, thanks.
there should be a small diameter line,maybe a 1/2 - 5/8 of an inch running from your filler neck to the tank..this is your vent line.it may have a kink in it or something blocking it. you can try running a piece of wire down it or about 30 pounds of compressed air
My original problem on a 2004 Chevy Avalanche was P0446 (Purge Valve), I replaced the purge valve and the Check Engine Light came back on not too long after clearing the code from the computer. The next code I got was P0449 (Vent Valve Solenoid), I replaced the Vent Valve but I'm still getting a P0449 code after clearing the code. The only thing I can think of is that the Charcoal Canister is going bad. I'm going to replace it and see what happens.
Side-note: I do struggle to fill the gas tank at the station, the sensor on the gas nozzle clicks off frequently. That's a sign that the charcoal canister isn't sucking out the fuel vapors from the filler neck properly. And I also get a "Tighten Gas Cap" message when I'm driving. I changed the gas cap but I'm still getting this message.
Yeah.. that's a pretty good indicator that your charcoal canister is bad.
@@austinalbright1854 This '04 Avalanche has 160,000 miles on it. I shouldn't be surprised...
Well. You would think that it would last longer. I have a '95 Buick regal GS it has 262,××× miles and I've never had a problem with it.
Mainly because, I've deleted the charcoal canister. Lol
I have a 04 Colorado that will turn over but die immediately is that what yours was doing? Bc I can't fig this out
Well. That sounds more like a fuel filter or fuel pump.
I needed this so bad thank you!
Very helpful! Thanks
I did what you said to do, i took off gas cap as soon as i turned on my car and it didn't die, it kept idling fine. But there is a strong gas smell in and out the car and also, i do remember being at the gas station and the pump would stop at 2 dollars then stop again and then it would fill up fine after that, could it possibly be the vapor canister??
Could a bad evap canister also throw a p2422 code ? For a vent valve stuck closed ? I have a 2016 Honda Civic, I have replaced both the purge and vent valves/solenoids and replaced the fuel pressure sensor, I’m just nervous to keep raking out money. Fyi the vent valve had also been filled with water before it was replaced
Yes. It can.
when you remove your gas cap the extra vacuum may be letting too much air into the engine via a faulty evap purge valve in the engine bay which would stall the engine. To check this you could start the car without the gas cap on . it will probably run fine. The evap purge valve should only let air from the gas tank enter the engine when the computer commands it to. At hot idle it shouldnt be purging i believe. Also i notice it depends how much fuel you have in the tank, if full it wont stall if you remove the gas cap
I've heard that topping off the tank after the gas pump stops can ruin the charcoal canister somehow.
Yeah. I don't know how try this is. I do it all the time.
Thanks buddy really helpful
I need help y’all I got a po446 on my gmc envoy I replaced the purge valve but it still idle weirdly and smells like gas fumes any suggestions thank you
Hey there. Not all the time, but sometimes you'll have to change the pigtail out with the new sensor.
I have had to do this more times than not.
Thank you so much .
👍🏿👍🏿👍🏿
You are very welcome
Odd. I have the same symptoms but I got a p0441 code. I replaced both the purge and vent valve. And its still there. I'm going to try the canister next.
I’m about to start that journey.
@@frankhernandez6524 it was the ecm for me. The ecm wasn't giving a ground
@@pablomarquez4431 and how did you fix that
@@kristianmopsticc2887 x1
@@pablomarquez4431 and how did you fix that??
Mad help my gas light gauge on my 2000 Chevrolet Malibu goes up and down says I have no gas but when I drive the gas catch it and showed my real gas .. code is
P0449 and it states it is a control circuit vent I’m looking it up and it’s showing me different things but I’ve recently replaced purge valve purge solenoid fuel pump fuel filter except for the canister my AC doesn’t turn on and only blows whenever I’m driving can’t switch it to anything kind of weird but I’m going to try that and hopefully that fixes the problem because some of the symptoms you said are the problems of mine
Hope it works.
Nice video can u do one for purge valve
When I come across one I will. 🙂
I have a 2002 Mercedes c240. Recently I started having issues at the gas pump where it would shut off every 3 seconds of pumping. The car itself takes about 3-4 restarts to get running properly on cold starts. Surprisingly I’m not getting any codes related to the evap system. The only codes I’m getting are for multiple cylinder misfires, sometimes it’s just 1 misfire that shows. Only thing I’ve done was replace the MAF sensor but that didn’t resolve my issue. Do you have any other suggestions? Can it still possibly be just the evap canister or the vapor canister vent valve? Also would a bad purge valve that’s located at the front of the vehicle cause issues fueling up at the station? Thanks.
I would say that it's probably not evap related, it may be a coil pack or knock sensor. I have seen knock sensors do this. But, being that it's Mercedes your cheaper option may be would be to replace your coil pack. And see where that gets you. Hope this info helps.
@@austinalbright1854 interesting, so what would be the cause of the gas pump shutting off on me every 3-4 seconds at the fuel station? No way that could be related to a bad coil pack can it?
Once I started having issues at the gas station, that’s when all this mess started roughly.
No, no coil pack issues there. Sorry I was addressing the random miss fire.
The pump how ever, sounds like your tank float valve is sticking. (try this) next time anytime/before fueling put a pint of marvel oil in your gas tank and see if that helps. Now, your car may smoke on that tank of gas or you may smell some oil burning, but don't worry thats the marvel oil.
@@austinalbright1854 I’ll give this a try and see what happens. I’ll be sure to also give you an update of the results as well. Thanks again for your tips and fast replies.
Thanks man !
Much welcome!🙂
I've replaced my purge valve and still only stalls after I put gas mine is a 2008 hyundai accent and I want to replace the Purge solenoid or evap canister idk
I would try the purge solenoid first and go from there.
@@austinalbright1854 but there is no engine light could it still need a new one ? In your opinion
Well. Since there is no code. It could be the canister.
Burn that turd
i topped off my gas once and now have a small evap leak code. How can i fix this? is the code coming from gas getting into the evap canister, if so how can i get the gas out of the canister
Well, yes. That code is more than likely to be from a little gas getting into the canister. You can try and taking off the canister and sitting out in the sun for a few hours, that will allow the gas to evaporate more quickly. Sometimes this helps Sometimes it doesn't. It just depends on how much got into the gas.
I hope this advice helps! :)
@@austinalbright1854 thx boss
@@jackgallagher4850 any time. Need me just ask.
Hey I drive a 07 ford 500 with this similar problem. Mines won’t take more than 7 or 8 dollars at a time and when I Do put gas in it’s still dies
Hello. It sounds like your float is stuck in your tank. And also, some other things. Like you purge valve, charcoal canister clogged, and vent solenoid bad. You can take it to an O'Reilly's and have them check for codes. Hope this helped
I have a 91 Honda Civic that stalls at half a tank. Do you know if this could be causing the problem? thanks
It could be. But, it's really hard to say. Have you tried changing it?
Does any body know why my purge solenoid makes a rapping noise and engine eventually has a rough idle.
It needs to be changed.
Dumb wuestion but the car shouls start up again once cap put on right?😆lol
It would. But, it would cut off like not even 10 seconds later.
Awesome thank you! I have a GMC Sierra. I got a lot of evap codes. I replaced the purge and the solenoid and the muffler smells like gas and I also have a catalytic converter code, any ideas?
Sound like your catalytic converter.
Definitely check your air fuel mixture.
If the mixture is rich, it will smell like gas, and it will burn up your catalytic converter. May have fuel entering the evap line causing a rich condition would be my guess.
@@braydinjones6301 The good thing is there's a specific code for the cat so there's no guessing there. Whether something else caused the cat to go bad (like being flooded with bad exhaust emissions) is another story.
@@rkgsd Right that’s what I’m alluding to. 👍
Question , I ran over something and my vapor canister is now hanging… Can I just zip tie it?
You can. For a quick and easy fix.
@@austinalbright1854 Sweet thank you.
@@thewiseguy7100 you're very welcome.
Is the evap canister same as charcoal canister?
Yes, It's the same. 🙂
Yes
Definitely not sperate from how the car runs, agreed, people at the dealership are dumb
Thank you, someone understands that!!👍👍🙂
@@austinalbright1854 I have an Audi S4 and my evap purge valve was replaced by the previous owner probably because he didn't realize that the line was broken under the car, I got that fixed but unfortunately they had replaced it with a cheap China made evap purge valve and not an OEM Audi German purge, so now I'll be driving when I shift from first to second as soon as my RPMs hit 2500 that valve gets stuck and the car lurches forward, I've been told wrap has nothing to do with how the car runs....WRONG, I took the valve off and plugged the hose with my thumb with the engine running and my OBD2 running I watched my air fuel ratio when I took my thumb off, it went to 30:1 AFM yet commanded was still 14.7:1 and the car struggled to stay running, so this hear verified that evap has everything to do with how the car runs especially in my V8 Audi it's almost not drivable because of the pure power loss. Now I did notice when I bought the car the vacuum boot pressure was normally at 26psi, now ever since I've been having surging and evap codes pop up it's been sitting at 15psi at idle, after 8 months and -15° weather while owning this car, tonight I have finally 100% solved the mystery of the evap purge system, thanks for your video, you helped verify my theory!
That's why I never listen to what anybody tells me. I always try to figure things out for myself, I especially do not listen to the dealership!! Always get a second opinion!
Local stealership just charged me $98 to "smoke test" mine, but didn't actually do a damn thing, quoted me like $1,100 in repairs, and tried to sell me a new Jeep.
Mine has a disconnected line on the canister, and I just over filled my tank today an none of the above happened. Has a code for a large evap leak. Any ideas?
It still sounds like you have a (purge valve) problem to me. Maybe still, you could have a bad canister or purge valve. Or just so happen that, your purge solenoid (right behind the coil packs on the engine)went out on you at the same time you over filled your gas tank. It's one of those three things. Lol😄
@@austinalbright1854 the gas didnt come out, just extremely full. I was told if water got in your canister itd ruin it
And I dont have coil packs.
Is you car a Malibu? Next question if the answer is yes. Then, is the 3.1 the 2.4?
If any liquid gets in there then. Yes, it can ruin your canister.
Thank You
You're welcome
Is Evap the same as purge valve? Also I get horrible gas mileage so is this a cause? I had a check engine light and they told me it was evap system
Yes, the purge valve is in the same system as the purge solenoid, and the charcoal canister. But this shouldn't cause bad gas mileage, have you cleaned the mass air flow sensor and the throttle body? If those aren't cleaned, that can give you bad gas mileage. If you have anymore questions please feel free to ask. :) :)
What about if you find charcoal pellets travelled to the evap purge leading to vacuum?
Um, I have never heard of that? But if that has happend, then I would say, it's bad. Because the charcoal is suppose to be concealed in that canister.
@@austinalbright1854 Exactly, thought as much. When i removed canister the pellets start to fall off and it make the car run rich. If i remove all the pellets from the canister and replace it back what will happen?
Well, you might want to make sure those pallets didn't get in your vent solenoid. Check your tubes going to your vent solenoid.
You need those charcoal pellets. The charcoal helps to filter! I don't know what will happen if you take all the pellets out?
@@austinalbright1854 Filter what?
Man his accent his hillybilly and sexy
Thanks. My wife thinks so, too.
I have a 99 Bonneville. Can’t put in more than 2 bucks worth of gas at a time. I will try this method out. Any way I can take this system offline easily?
Anybody that can program gm W-bodys can do this. But, it usually runs about $150 -$170.
Each time I open my fuel cap, I hear a fizz sound. What could be the reason.
Nothing bad. When you undo your gas cap you are just releasing the expanded gases. :)
Is P0443 the same as P0442 ? I get P0442 for my Passat 2013 .
I don't know of that would be the same code for European vehicles. I would assume it would be. But, don't hold me to it.
I have p1447 I couldn’t find it
Do u have a video of you removing it
I'm sorry, I don't.
@@austinalbright1854 thanks for replying
@austinalbright1854 I've got a 1999 Oldsmobile cutlass and I've been having a issue with the gas trying to come back out the filler neck while I'm pumping gas and it keeps shutting the pump off
👍🏽
I drive a 2000 impala and I tryed this and my car still ran but my gas isnt going into the tank what should I do?
Hey, it could be the float valve inside the tank.
The tank would have to be pulled out of it.
Are you sure about that gas cap example?
I know what I experienced. So, yes. I'm am.
@@austinalbright1854 hey I changed the fuel pump and purge valve and just recently when I was pumping gas it would pour out of the gas tank and act as if it was full at the rim
That sounds like the float in the take is defective.
I've had to replace the tank because of it.
That may be your case.
If the evap can isn’t computer controlled then just take it out, problem solved
The vent solenoid is connected to the Evap canister. So, it knows when its clogged.