Vacuum Pump - Noise/Vibration

CATEGORY
Brakes

SECTION
5

ISSUE
07/96-0697

PAGE
14

CODE
000

Subject:
Correcting a Customer Complaint of Noise or Vibration
Coming from the Vacuum Pump

Application:
Certain 1994- 900 Models

This bulletin contains information about a resistor harness that can be installed to address a Customer Complaint of vacuum pump noise or vibration following installation of vacuum pump kit, P/N 47 78 411 (refer to PSI 04/96-0679). The resistor harness lowers the operating voltage of the pump, which lowers objectionable noise. Normally, the vacuum pump only runs for 1-2 seconds and most customers would not find this brief operation objectionable.

Cars Affected:

1994 900 Models with 2.5 liter V6 engine with automatic transmission and without air pump.

1994- 900 Models with 2.3 liter 4-cylinder engine with automatic transmission and with air pump.

1995- 900 Models with 2.5 liter V6 engine with automatic transmission and with air pump.

Parts:

Resistor wiring harness 48 06 428

Action:

1. Unplug the vacuum pump adapter harness at the vacuum pump.

2. Plug one end of the resistor harness, P/N 48 06 428, into the connection at the vacuum pump.

3. Plug the other end of the resistor wiring harness to the vacuum pump adapter harness.

4. Reconnect the negative battery cable.

Warranty Information:

To resolve a customer complaint for a vehicle in warranty, submit a claim using the following information:

Failure code: 54125-40-0-01-05

Labor operation number: 54128

Please update your DCS operation number table using the following information:

Labor operation: 54128
Description: Inst Harness Br Vac Kit
Trans. Type: B
Eng. Type: 9
Diag. Reqd: 0
Begin Yr: 94
End Yr: 96
Hours: 0.4