Main Fuel Pump Volume Check

WARNING: This page is about a different car, the 1995 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before testing main fuel pump, check transfer pump. See TRANSFER PUMP CHECK .

Remove fuel pump relay from relay panel. Activate fuel pumps using Remote Control (VAG 1348/3A). Measure voltage being applied to fuel pump when activating with remote control. Record voltage.
Fuel volume is relative to voltage applied to fuel pumps. Activate fuel pumps for 30 seconds. Compare volume with values in FUEL PUMP PERFORMANCE table.

FUEL PUMP PERFORMANCE ⁽¹⁾

Application

Pressure psi (kg/cm² )

Min. Vol. In 30 Sec. Pts. (L)

Passat

58 (4.0)

1.0-1.4 (0.5-0.7)

⁽¹⁾	Fuel pump energized, with 10-12 volts at fuel pump, and engine off.