Dead AUDI Fuel Pump - Insulate/Clean Connection (AUD0421AP)

Publication date: 1989-12-01
Reference number: AUD0421AP

DEAD AUDI FUEL PUMP - INSULATE/CLEAN CONNECTION

TECHNICAL INFORMATION TIP

Reference Number(s): AUD0421AP, Date of Issue: December 1989

VEHICLE QUITS RUNNING WHEN FUEL PUMP LOSES POWER

YEAR(S): 1978-88

MANUFACTURER: Audi

MODELS: 4000; 5000

DATE OF ISSUE: December 1989

ISSUE & TIP

A number of Audi 4000 and 5000 models have quit running when the fuel pump lost power. The green and yellow power supply wire to the fuel pump goes through a connector beneath the rear seat. We remove the rear seat cushion to solder and insulate the connection.

(Editor's Note: We have also gotten some reports that the ground connection for the pump, which is also located beneath the rear seat, can corrode, causing a similar problem. This is ground connection number 14 in the Audi wiring diagram. You might as well clean and tighten this connection while the seat is removed.)

Courtesy of Import Service Magazine

with thanks to:

Frank Hanrahan

Haus of Performance

Costa Mesa, California

REFERENCE NUMBER

AUD0421AP

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