Does anyone recognize this part - 2004 WJ

[Cottontail]

This part is mounted to the drivers side inner fenderwell, just behind the air cleaner box. There are 2 hoses/lines coming out of it. The bottom is a flexible line (plastic) that goes into the engine. The top one turns into a hard line that runs to the fuel tank.

There is a release valve on it, as well as a electrical connection. Symptoms of the Jeep (4.0 L I6) is lots of vibration at idle, moreso in gear than in neutral or park.

I noticed that this part was ticking...a steady, rhythmic click. When I unplugged the connection, the idle got worse. When I plugged the connection back in, it stopped clicking, but I suspect it will come back.

 

[OverlandZJ]

EGR solenoid, the clicking is normal.

 

[FlexdXJ]

Never seen it mounted on the drivers side. Mine doesn't click but I hear it's common.

 

[Handlebars]

That is the evap system purge valve. It is duty-cycle controlled, hence the clicking sound. The green cap covers the test port, where a technician can check for leaks of the fuel tank.

 

[kastein]

Handlebars is correct. Same one exists on most 90s XJs, too, I forget when they started installing them. My 96 had one and I know they existed through 01...

They can make a hell of a clunking sound because the construction of the firewall amplifies the sound of the valve plunger cycling. I could swear it was a golfball rattling around under the wiper cowling or something the first time I heard it.

 

[RNMedic]

there is a TSB to put an expensive couple of washer (rubber) on there to correct the tick feeling.

 

[OverlandZJ]

Handlebars is correct.

Yes he is.. I knew that didn't look right. :laugh3:

 

[srmitchell]

We had to replace this on our 2004 4.7 wj, they all click.

 

[GrimmJeeper]

same thing is on my 00 XJ, i thought the turn signal was stuck on first time I heard it clicking.