Cherokee Chief Rollin Coal
Senior Member
Joined: Nov 2011
Posts: 795
Likes: 0
From: Snowville, PA
Year: 1998
Model: Cherokee
Engine: 4.0 I6 torque monster w/ a supercharger
Senior Member
Joined: Jan 2012
Posts: 559
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From: FL
Year: 1991
Model: Cherokee
Engine: 4.0L H.O Power Tech
Senior Member
Joined: Nov 2011
Posts: 795
Likes: 0
From: Snowville, PA
Year: 1998
Model: Cherokee
Engine: 4.0 I6 torque monster w/ a supercharger
Got the fuel tank out. Seems like the fuel starvation issue around half a tank is slightly more complicated... As bad as the filter looks, there isn't much resistance when suction is applied to it.
The current working theory is that the low pressure fuel pump is weak and when the tank is full, there is positive pressure pushing the fuel up to the pump. But when it gets lower, suction is required and the low pressure pump isn't capable of doing that.
So.... We're gunna get a new filter and a low pressure external electric fuel pump to put right rear the fuel tank. This should theoretically allow it to run past 1/2ish tank.



The current working theory is that the low pressure fuel pump is weak and when the tank is full, there is positive pressure pushing the fuel up to the pump. But when it gets lower, suction is required and the low pressure pump isn't capable of doing that.
So.... We're gunna get a new filter and a low pressure external electric fuel pump to put right rear the fuel tank. This should theoretically allow it to run past 1/2ish tank.



Senior Member
Joined: Nov 2011
Posts: 795
Likes: 0
From: Snowville, PA
Year: 1998
Model: Cherokee
Engine: 4.0 I6 torque monster w/ a supercharger
Okay... Tank back in. Removed the in-tank fuel filter and hose. Replaced with a piece of copper pipe set about 1/2" above the bottom of the tank. Also replaced the fuel filter under the hood. Going to take Jeep on a test drive to see if it still starves for fuel. Idles and revs fine in driveway. If it starves, we'll put the electric fuel pump in. If it doesn't starve/die then..... Either assume problem was in the in-tank GASOLINE filter and/or fuel filter under hood OR drive it until there is another fuel issue... Lol
Senior Member
Joined: Nov 2011
Posts: 795
Likes: 0
From: Snowville, PA
Year: 1998
Model: Cherokee
Engine: 4.0 I6 torque monster w/ a supercharger
Test drive successful. Issue seems to be resolved. Electric fuel pump not required. So far so good. Lol
Tomorrow's project is to tackle the lift. -.-
Tomorrow's project is to tackle the lift. -.-
Senior Member
Joined: Nov 2011
Posts: 795
Likes: 0
From: Snowville, PA
Year: 1998
Model: Cherokee
Engine: 4.0 I6 torque monster w/ a supercharger
And so it begins.... Starting off in the front by replacing the rotors and pads with centric premium rotors and centric semi-metallic pads. Hopefully this will make it stop better. Old stuff had an almost glass-like feel/surface.
Front suspension is next.

Front suspension is next.




