Fuel Pump Relay

1991 Volvo 740 Base, 4D Wagon, Automatic, AW70LSECTION Fuel Pump Relay

Connect jumper wire between fuel injection ECU terminal No. 21 and ground. Connect another jumper wire between fuel injection ECU terminal No. 20 and ground. Fuel pump relay should close and fuel pump should run. Replace relay as necessary.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.