Fuel Pump, Three Wire Verses Two Wire Types
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CF Veteran
Joined: Dec 2017
Posts: 1,508
Likes: 409
From: San Mateo, CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0 Renix, stock.
Fuel Pump, Three Wire Verses Two Wire Types
My 1990 XJ, Renix jeep needs a new pump, old pump has two wires, new pump has three, what gives?
New pump....
New pump....
CF Veteran
Joined: Aug 2020
Posts: 2,109
Likes: 576
From: SoCal
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
Does the connector on the main harness have 2 or 3 wires?
My FSM show 3 wires. Pump, sender and ground. Looks like the ground is missing. Perhaps it grounds through metal to metal contact?
My FSM show 3 wires. Pump, sender and ground. Looks like the ground is missing. Perhaps it grounds through metal to metal contact?
CF Veteran
Joined: Jun 2009
Posts: 2,607
Likes: 446
From: Michigan
Year: 1987 MJ, 1973 J2000, 1986 XJ, 08 JK
Model: Comanche (MJ)
Engine: 4.0L H.O
I may be wrong but I believe the former setup has a hang down spade from the inside of the sending unit plate soo it does in fact ground to the tank itself
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