1992 Dodge Caravan fuel pump and fuel level sending unit

1992 DODGE CARAVAN
150,000 MILES • 6 CYL • 2WD • AUTOMATIC
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ADB2486
  • MEMBER
  • 1 POST
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.
Jan 20, 2010 at 2:32 PM
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JDL
  • ✓Experienced 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://images.2carpros.com/forum/automotive_pictures/170934_fuel_pump_sender_unit_1.jpg

Jan 21, 2010 at 8:14 AM
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