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Home >> Volkswagen >> 1995 >> Passat GLS, 2.0 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Main Fuel Pump Volume Check

Main Fuel Pump Volume Check

NOTE: Before testing main fuel pump, check transfer pump. See TRANSFER PUMP CHECK .
  1. 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.
  2. 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.
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