"evap canister" almost cracked off. What exactly does it do? Should it be replaced?

On a ZJ its inside the damn bumper basically below the drivers side headlight

fsm quote.

All Grand Cherokee models-below the left front headlamp

no symptoms posted, so cant guess if this is bad. its not.

but you want to remove it , so you get to waste all that time doing so.

we never do this.

why not post the symptoms so good help can happen

got DTC errors, is the gas cap sealing? for EVAP failure?

that be first.



here is a list of canister ploys.

1. i hate it and need to remove it. illegal



2. i want to move it. ok "you tell us"



3. it has a crack in the side, from past collisions and sucks air , fix it



4. i got DTCs but cant remember them. pencil and paper , missing?



5. the gas cap is bad or loose and i want to fix something harder.

see all the photos on the forum

http://www.jeepforum.com/forum/f13/best-way-relocate-evap-canister-564478/



they move it only for , wild off road front end modifications

a very unique context. but shows nice photos of front end

the FSM covers this.

why nor read the bible or post context and some symptoms if any.

or try reading this at alldata.com

see if they have instructions there.

my guess is the grill needs pulling

unbolt it , on some cars it snaps off.
why is this not obvious>?? you look and you see what>?

by remove , i assumed its being replaced or tested.
not remove for ever, that be a whole endless topic ......????

OBD code P0442 Small EVAP leak detected you may need to check the EVAP canister under the vehicle and the purge valve as well check for cracks on the canister or the purge valve and check all the rubber hoses connected to them foe cracks or holes. If you find any damage parts replace them. P0455 which means a large EVAP leak is sometimes referred as the gas cap leak check your gas cap and secure it tight if you still have the code change the gas cap hope this helps after you find and fix the problems get the vehicle to a shop and they will use an OBD scan tool to clear the codes.

Have a smoke test done to check for any evap air leaks.

Large EVAP leaks are Many times the EVAP NVLD PUMP. It should be on the side of the charcoal canister. it can also be a EVAP hose that is not properly installed or cracked really bad. So it is important to inspect to entire system first. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

I would start with the gas cap replacement and see if the issue resolves itself. If you do have a problem with the EVAP (canister) system, it may require tools the average person does not have to help diagnose and correct/repair.

open hood and ck for broken vacuum hoses going to the purge valve(2 vacuum ports and a wiring connector)
on the drivers side between airbox and firewall
if good remove driver side rear tire and inspect hoses next to the gas tank and 3rd, the canister is in that wheel well also insp for cracked hoses there also, been working for jeep 12 years i charged people about 1 hour to correct this probem.

EVAP canister is located behind the left-rear wheel. It is attached to a two-piece support bracket

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/thomas_c50676e836a18949

Check under the hood for the complete chart of the vaccum routing of the EVAP.
The weak spot in the Jeep is the solonid valve and the EVAP cansiter.
If you fail the emission because of EVAP then look for the the gas fill neak for leak.
There are many potential leaky spot.
The key is DO NOT TOP OFF the gas when refilling. They excess fuel can damage the valve and canister.