Fuel Pump - Noise On Fuel Injection Vehicles
86peugeot01BULLETIN NO. 200
DATE: October, 1986
SUBJECT: SUPPLEMENT TO S.B. NO. 190 - FUEL PUMP NOISE ON
FUEL INJECTION VEHICLES
Please note that reversed polarity at the priming pump, motor connection will render the pump inoperative. A constant cavitation noise will be emitted by the main fuel pump.
This condition can occur during priming pump modification if the wires are inadvertently disconnected and reversed upon reinstallation.
IMPORTANT: If the wires have been inadvertently disconnected, do not use wire color coding as a reference for positive (+) and negative (-) connection to the pump motor.
CHECKING FOR CORRECT POLARITY
This test is to be performed on a work-bench using an ohmmeter.
Both red and black wires should be disconnected from pump motor.
SEDAN PUMP
Connect one lead of ohmmeter to priming pump bullet terminal.
Use other lead of ohmmeter to determine which of the two pump motor wires has continuity with bullet terminal.
Connect wire with continuity to positive side. (+) marking on pump motor.
Connect other wire to ground side. (-) marking on pump motor.
STATION WAGON PUMP
Connect one lead of ohmmeter to female side of double pin connector.
Use other lead of ohmmeter to determine which of the two pump motor wires has continuity with female side of double pin connector.
Connect wire with continuity to positive side. (+) marking on pump motor.
Reconnect other wire to ground side. (-) marking on pump motor.