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Main Fuel Pump Volume Check (Fox)

  1. Disconnect wire harness connector the from fuel pump. See Fig 1 . With voltmeter attached to terminals, activate fuel pump by removing fuel pump relay and attaching jumper wire between terminals No. 30 (Red) and No. 87 (Red/White).
  2. Record voltage. Remove fuel line from outlet side of accumulator. See Fig 1 . Attach a piece of hose between return line and a graduated container. Activate fuel pump for 15 seconds. Compare volume with specifications given in FOX MAIN FUEL PUMP VOLUME  table.
FOX MAIN FUEL PUMP VOLUME

Fuel Pump Voltage Fuel Delivery: Oz. (L)
8.0 10.1 (.3)
10.0 17.0 (.5)
12.5 20.3 (.6)
14.0 27.2 (.8)
Fig 1: Fox Main Fuel Pump Mounting Arrangement
G121504Courtesy of VOLKSWAGEN UNITED STATES, INC.