1989 Volvo 740 B12 - B17 Checking Fuel Pumps, Fuel Pressure and Regulator

1989 Volvo 740 L4-2320cc 2.3L SOHC Turbo VIN 87 B230FT

B12 - B17 Checking Fuel Pumps, Fuel Pressure and Regulator

B12 Connect Pressure Gauge 5011

Connect gauge between fuel pipe and fuel distribution manifold, use hose 5116 and nipple 5265,

Plug open end of hose with 5266.

Turn gauge cock to position 1, pointing toward hose 5116.

B13 Check Function Of Fuel Pump And Tank Pump

Pressure sensor is located next to expansion tank in engine compartment.

Disconnect connector from sensor.

Turn on ignition.

Connect wire (in connector) from relay to ground. (Note: both wires are yellow/black, check which one is ground).

Fuel pumps should start and be clearly heard.

B14 Check Tank Pump

Unscrew fuel filler cap and listen.

It is also possible to connect an ammeter between the fuse and pump wiring. Download File PDF


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