9000 Hatchback L4-2290cc 2.3L DOHC Turbo EFI (1994)
Housing Assembly HVAC: Service and Repair
Air Leakage, Sealing
When recirculation is selected, some air leakage may occur at the cable entry beside the heating and ventilation unit. This is due to excess pressure
building up at the fresh air intake when the recirculation damper is closed. Air leakage can cause a high-frequency noise to develop at speeds above 100
km/h. This air leakage is corrected by sealing the cable entry with a suitable sealant. To ensure that this measure will be fully effective, the cable entry
should be sealed on both sides, from the cabin and the engine compartment.
Materials
Sealant, part No. (16) 3020 716
Action
First test drive the car to check that the noise occurs as described above.
1
Remove the top part of the facia.
2
Remove the defroster duct and air duct to the side vents.
3
Apply sealant around the cable entry beside the heating and ventilation unit. Also seal the air apertures (A) above and below the cable entry.
4
Open the bonnet and remove the cover over the bulkhead space.
5
Apply sealant around the cable entry beside the heating and ventilation unit. Also seal the air apertures (A) above and below the cable entry.
6
Reinstall the cover over the bulkhead.
7
Reinstall the air duct and top section of the facia.
