|
Quote:
Originally Posted by Anony
What is the code?
The rectangular evap canister, located underneath the vehicle, should have three plastic ports connected to rubber hoses. Should be the same for 97 or 98 through 01 (federal emissions).
From what I remember from a few years back after dropping the tank, there is a metal line coming from the fuel tank with a rubber hose to the canister. I can't remember if there is a rubber connection on both ends of the metal tubing. If it is leaking you should be able to splice in a new piece of metal tubing.
The three ports should be .. one for the intake, vacuum line from the purge solenoid and the third is for fuel vapors and roll-over from the fuel tank.
If one of the lines is not leaking. Evap canisters potentially can crack. Sometimes the plastic ports break off or develop a leak.
Can't remember the code number but it's the one for evap leak small. My buddy ran it for me. My metal line is really rusted. On initial inspection the rubber lines look ok but I have to look more thoroughly.
The charcoal canister -- technically called the EVAP canister -- is part of the vehicle's evaporative emission control system. It works with the natural vacuum leak detection (NVLD) pump to store gas vapors and keep them out of the atmosphere. This canister should last as long as the vehicle, but you may need to remove it to work on other components like the fuel tank. On the Jeep Grand Cherokee, it is mounted to the vehicle with multiple brackets and connected through hoses. This procedure may vary depending on the vehicle's exact year.
Step 1
Raise the vehicle's rear end using a floor jack and support it on jack stands. The charcoal canister is directly in front of the fuel tank, which is on the side of the vehicle with the filler door, and the hoses/wiring are connected on the canister's left side.
Step 2
Squeeze the inner edges on the release tabs to the EVAP hose's light-colored connector to release their locking teeth from the canister pipe's raised ridge. Pull the connector off the pipe to disconnect the hose.
Step 3
Push the sliding lock on the NVLD pump's electrical connector away from the pump and toward the wiring harness to move it to the release position. Press the release tab near the lock and pull the connector off to disconnect the electrical connector.
Step 4
Disconnect the filter hose from the NVLD pump, which is on the opposite side of the electrical connector.
Step 5
Press the locking tabs at the canister's right-side mounting brackets with a screwdriver to disengage the canister from the brackets.
Step 6
Swing the canister's right end out and away from the vehicle and disengage the mounting slot from the tab at the left mounting bracket to remove the canister.
References
- "Chilton Jeep Grand Cherokee 2005-09 Repair Manual"; Ed McCahill; Haynes North America; 2009
Things You'll Need
- Floor jack
- Jack stands
- Screwdriver
Writer Bio
Chris Moore has been contributing to eHow since 2007 and is a member of the DFW Writers' Workshop. He received a Bachelor of Arts in journalism from the University of Texas-Arlington.