9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Control Assembly: All Technical Service Bulletins
Climate Control Unit - High Frequency Noise
CATEGORY: Body
SECTION: 8
PAGE: 97
ISSUE: 10/94-0513
CODE: 854
Subject:
Noise From Climate Control Unit
Application:
9000 M92-94
When recirculation is selected, some air leakage may occur at the cable lead-through beside the heating and ventilation box. This is due to excess
pressure building up at the fresh air intake when the recirculation damper is closed. This may result in a high frequency noise developing at highway
speeds.
This air leakage can be stopped by sealing the cable lead-through with suitable sealant. To ensure that this measure will be fully effective, the cable
lead-through should be sealed on both sides (i.e. from the passenger compartment and engine bay).
Cars Affected:
9000 models M92-94 up to VIN Serial No.R1017979
Parts:
Sealant
30 20 716
Action:
First, test drive the car to verify that the noise is occurring as described above.
1.
Remove the upper part of the dashboard.
2.
Remove the defroster duct and air duct to the side vents.
