What is this thing?
Thread Starter
CF Veteran
Joined: Jan 2009
Posts: 1,964
Likes: 6
From: Baltimore, Maryland
Year: 1994 1993
Model: Cherokee
Engine: 4.0
What is this thing?
I just bought a 1993 XJ about a week ago and am slowly fixing a long list of problems it has. I noticed this in the engine compartment. It's on the drivers side fender almost back at the fire wall. My 1994 XJ doesn't have one.
CF Veteran
Joined: Oct 2010
Posts: 2,150
Likes: 12
From: Ontario, Canada
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 L 6 Renix
Ballast resistor, reduces voltage delivery to the fuel pump (9 to 11V range). Increases fuel pump longevity. You should carry a spare in case the resistor on the backside of the ceramic fractures and fails. No continuity will shut down your fuel pump. If it fails, In a pinch connect the two green wires to make it home.
Thread Starter
CF Veteran
Joined: Jan 2009
Posts: 1,964
Likes: 6
From: Baltimore, Maryland
Year: 1994 1993
Model: Cherokee
Engine: 4.0
Ballast resistor, reduces voltage delivery to the fuel pump (9 to 11V range). Increases fuel pump longevity. You should carry a spare in case the resistor on the backside of the ceramic fractures and fails. No continuity will shut down your fuel pump. If it fails, In a pinch connect the two green wires to make it home.
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
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From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Ballast resistor, reduces voltage delivery to the fuel pump (9 to 11V range). Increases fuel pump longevity. You should carry a spare in case the resistor on the backside of the ceramic fractures and fails. No continuity will shut down your fuel pump. If it fails, In a pinch connect the two green wires to make it home.
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