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Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
CF Veteran
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
Junior Member
Joined: May 2008
Posts: 15,016
Likes: 11
From: +34° 25' 35.67", -81° 21' 12.04"
Year: 1993
Engine: 4.0
CF Veteran
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Got a 1999, evap canister is back by the fuel tank on driver's side. Is it supposed to emit a high pitched buzz/whine sometimes? I mean quite high pitched, some folks might not be able to hear it
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
I'm assuming so. I guess it could be the fuel pump. It's an electronic whine, not mechanical.
Evap canister is in that box by the frame rail, disgused as rust
Evap canister is in that box by the frame rail, disgused as rust
Senior Member
Joined: Apr 2013
Posts: 663
Likes: 0
From: Hahira,Ga
Year: 2001
Model: Cherokee
Engine: 4.0 I6
As far as radiator, fill it up, drive a few days, empty by the wing nut on the passenger-bottom side and repeat. Thats what I did. You could drink from it now.
First move engine:

Then grab a pressure washer to spray it out:

and this will come out.
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
I've asked before if anyone has a schematic of what all runs in/out and what resides in that box, no one every responds lol.





