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1992 Dodge Caravan fuel pump and fuel level sending unit

Tiny
ADB2486
  • MEMBER
  • 1992 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I replaced my fuel pump with a used one. The electrical sockets are different. My old one had 4 wires and now the other one has 3 wires. The Pump gets voltage for a second as I first turn over the engine and the fuel sender registers 8 v. But the gas gauge does not register. I am asking for a wiring diagram or a lead in what direction to go.
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Wednesday, January 20th, 2010 AT 10:32 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum. What did the used pump come off of, year---make-- and model. I spent 30 minutes trying to find wiring info on your vehicle. For me, the older systems are sometimes hard to find wiring info. If the fuel tank sending was for a digital instrument cluster and the used one is for a different type cluster. I'm not sure I can help you?

My info for the 92 shows the fuel pump sending unit sends a signal to the BCM, the bcm, in turn, sends a serial data signal to the instrument cluster. If you use a used pump the used one needs to be exactly like the one you took out, connector and all.

I found this diagram at showmetheparts.com/airtex/


https://www.2carpros.com/forum/automotive_pictures/170934_fuel_pump_sender_unit_1.jpg

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Thursday, January 21st, 2010 AT 4:14 PM

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