Charcoal Canister / EVAP System Delete?

[AssBurns]

I've had my EVAP/ Charcoal Canister bypassed for some time now and just barely bulled the Charcoal Canister out so I thought I'd share how I did it. The way I bypassed it is much easier and simpler than the ways mentioned above. No tee fittings, no breather tube and still vents to your intake rather than directly to the atmosphere. Gotta keep the hippies happy :hippie: Honestly, it's just a better idea in my opinion so that fuel vapors are not just dumping out into your engine bay or outside of your vehicle. You will smell unburnt fuel sometimes out your exhaust but better than fresh gas fumes all the time.

There are only a few lines that need to be changed with this method. Basically all you need to do is locate your Fuel Tank Vent Line and unplug it from the Charcoal Canister. Locate your Vapor Purge Valve and unplug the lower hose that connects to the Charcoal Canister. Now plug the Fuel Tank Vent Line directly to the Vapor Purge Valve. Then locate the hose that runs from your Air Box to your Charcoal Canister. Pull the hose and cap the tube coming out of the Air Box. That's it! Now just unplug the pressure sensor and unbolt the Charcoal Canister to pull it all out. Easy peasy! This can easily be done without any modifications in just a few minutes, so everything can easily be put back into place when you need to pass SMOG or Inspection.


Hope this helps anyone that is looking to gain some room in the engine bay.

 

[73Duster440]

I've had my EVAP/ Charcoal Canister bypassed for some time now and just barely bulled the Charcoal Canister out so I thought I'd share how I did it.

Thank you sir. I owe ya one. Just completed this earlier today how you have it and no CEL

Ended up mounting it on the firewall just above the booster to keep it out of the way and to keep it tidy. Almost look like its factory.

Now I have room to mount my fuse box and have all the relays hidden underneath.

 

[FoCoNemo]

why not relocate it to the back near where the spare tire is, just like in the 2001-2002 4Runners?

Do you know of someone who has done this? I've looked all over and can't find a thread about it. I have a 96 and want to move mine to the back. Thanks!

 

[Hopeless Diamond]

Well, no joy. Tried Assburns method and after a couple of days I got a CEL (I'm assuming it's not something else but haven't checked yet). Gonna keep playing around with it, and if I can't find a way may just pull the CEL bulb and check codes every month or so

 

[HiluxSurf SSR-G]

I don't know if anyone has done it. perhaps the system used in the 2001-2002 4Runners can be made to work in the 1996-2000 4Runners

 

[sleepydad]

Well, no joy. Tried Assburns method and after a couple of days I got a CEL (I'm assuming it's not something else but haven't checked yet). Gonna keep playing around with it, and if I can't find a way may just pull the CEL bulb and check codes every month or so

I don't know if anyone has done it. perhaps the system used in the 2001-2002 4Runners can be made to work in the 1996-2000 4Runners

I removed my evap in my 97 last fall and drove it around all winter, no codes. I have been looking for a decent evap from an 01,02 so I can see what’s involved. At some point I will try it. Living in the rust belt once the trucks go to salvage they are so corroded back there you would need a grinder, torch and TNT to get anything out.

 

[SnowroxKT]

I've had my EVAP/ Charcoal Canister bypassed for some time now and just barely bulled the Charcoal Canister out so I thought I'd share how I did it. The way I bypassed it is much easier and simpler than the ways mentioned above. No tee fittings, no breather tube and still vents to your intake rather than directly to the atmosphere. Gotta keep the hippies happy :hippie: Honestly, it's just a better idea in my opinion so that fuel vapors are not just dumping out into your engine bay or outside of your vehicle. You will smell unburnt fuel sometimes out your exhaust but better than fresh gas fumes all the time.

There are only a few lines that need to be changed with this method. Basically all you need to do is locate your Fuel Tank Vent Line and unplug it from the Charcoal Canister. Locate your Vapor Purge Valve and unplug the lower hose that connects to the Charcoal Canister. Now plug the Fuel Tank Vent Line directly to the Vapor Purge Valve. Then locate the hose that runs from your Air Box to your Charcoal Canister. Pull the hose and cap the tube coming out of the Air Box. That's it! Now just unplug the pressure sensor and unbolt the Charcoal Canister to pull it all out. Easy peasy! This can easily be done without any modifications in just a few minutes, so everything can easily be put back into place when you need to pass SMOG or Inspection.


Hope this helps anyone that is looking to gain some room in the engine bay.

This is exactly what I did on my 1995 3RZ-FE Tacoma. The system on my Tacoma seems slightly less complicated, but I took the charcoal canister out and hooked up the tank vent line to the purge valve which still goes to the intake. So far no CEL. About to leave on a remote hunting trip with the truck, so if no issues pop up I'll leave it this way.

 

[Hopeless Diamond]

You guys sure your CEL bulb isn't burned out LOL.

Took about 2 or 3 days, then the first code I got was for the Pressure sensor (P0450 I think). I had unplugged it so figured maybe there was some logic in the ECU that needed to see it there, whether there was any pressure to sense or not. Another few days, then the code was for incorrect purge flow (P0441). Put it all back and will noodle on this some more..

 

[AssBurns]

You guys sure your CEL bulb isn't burned out LOL.

Took about 2 or 3 days, then the first code I got was for the Pressure sensor (P0450 I think). I had unplugged it so figured maybe there was some logic in the ECU that needed to see it there, whether there was any pressure to sense or not. Another few days, then the code was for incorrect purge flow (P0441). Put it all back and will noodle on this some more..

Hahah yes and no. Yes my bulb was burnt out but no the codes did not show up. I have a reader that I usually leave in the OBDII port and check it somewhat often. I don’t think I’ve gotten any of those codes ever. I did get a code at one point but it went away and never came back. I think it was unrelated to this modification.

 

[SnowroxKT]

Having some misfires occasionally now. Not sure if related but I'll undo this for now.

 

[Hopeless Diamond]

Shouldn't cause any mis-fires, its all about containing any gas fumes from being released. It's a convoluted system of checking for pressure, vacuum, phase of the moon, and whether you put your underwear on correctly. Lighting the CEL in and of itself isn't much more than a nuisance, but it could mask another problem if it was already lit. And of course in areas with emissions testing you will be burned at the stake.

 

[M3514]

My 95 4runner problems

Hello! Quick question after plugging the hose did it resolve your situation with your vehicles? I been trying to figure out what to do about the same situation. My hose popped out of place and I'm quite unclear if where it goes * and I don't trust my mechanic anymore, so been trying to do it on my own! If you guys can give any advice it would be great! P.s. this post helps alot

 

[Chorche]

There are only a few lines that need to be changed with this method. Basically all you need to do is locate your Fuel Tank Vent Line and unplug it from the Charcoal Canister. Locate your Vapor Purge Valve and unplug the lower hose that connects to the Charcoal Canister. Now plug the Fuel Tank Vent Line directly to the Vapor Purge Valve. Then locate the hose that runs from your Air Box to your Charcoal Canister. Pull the hose and cap the tube coming out of the Air Box. That's it! Now just unplug the pressure sensor and unbolt the Charcoal Canister to pull it all out.

Hi, I am working on the "russian swap" (want put the 5VZ-FE into my GAZ Sobol 4WD camper) and I found this great AssBurns solution. But I would like to ask what to do with VSV for VPS. If just unplug the connector and leave or this valve need to be electrically connected with unplugged hoses. Sure I don´t want the charcoal canyster under my hood...
Thanks a lot for advice!

 

[Devbot]

Well, no joy. Tried Assburns method and after a couple of days I got a CEL (I'm assuming it's not something else but haven't checked yet). Gonna keep playing around with it, and if I can't find a way may just pull the CEL bulb and check codes every month or so

You ever figure it out or did you ditch the idea long ago?
I know this is an old post but you're one of the few in the thread that tried it and is still active according to last login date :spy:
This way of doing the delete is pretty clean and appealing, but that purge solenoid was my first concern. Typically when you unplug stuff like that the ECU rightfully thinks it's gone dead and needs replaced. Also curious what's done with the hose leading to that solenoid as well
I'm kinda teetering on the ideas of "not really worth it" and "why not"

 

[Hopeless Diamond]

You ever figure it out or did you ditch the idea long ago?
I know this is an old post but you're one of the few in the thread that tried it and is still active according to last login date :spy:
This way of doing the delete is pretty clean and appealing, but that purge solenoid was my first concern. Typically when you unplug stuff like that the ECU rightfully thinks it's gone dead and needs replaced. Also curious what's done with the hose leading to that solenoid as well
I'm kinda teetering on the ideas of "not really worth it" and "why not"

Sorry for the delay. Ditched the idea. Wasn't worth it to me to struggle with a work around. Have learned to embrace the wheezing. Gave the rig it's name "Wheezy" . It's just like me, a little bit of effort and it wheezes for days...

 

[Pyral]

I think the later 3rd gens will flash the check engine light if there is an urgent problem, so removing the CEL bulb might be a bad solution