Fuel Pump/ Relay

Hello,

The fuel pump relay is in the middle here is a guide to help you check it and a diagram below to help you see the location.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Hi umwolvefan. Welcome to the forum. What are the symptoms or what is the problem that sent you to the pump? You're right; 9 volts is too low. Where are you grounding your voltmeter? When things don't make sense after finding low supply voltage, I have to remind myself to look at the ground circuit. Measure the voltage between the pump's ground terminal and a good clean spot on the body. If you find near 0 volts, split the supply side in half by sticking wires in the relay socket terminals so you can measure the voltage on the two contact pins while the pump is drawing current and running. If you have near full battery voltage on both pins, suspect a corroded pin in a connector going to the pump. If you find 9 volts on the relay pins, we have to work backwards toward the battery to find the 3 volt drop.

It sounds like you understand electrical theory so it shouldn't be necessary to run through all of that. Holler back with your findings.

Caradiodoc

Have you checked for spark and fuel to the engine? Have you checked the Electronic Engine Control (ECC) relay?

Let me know.

Joe