BMW E28 heater blower motor
The E28 heater blower rattles or slows down – what is wrong?
The rattling often comes from the blower fan blades rubbing against the housing. You can see the cause by taking the blower plate off and turning the motor by hand. If the bearings make a rattling noise, they are worn out and replacing them is not worthwhile.
How do you replace the E28 heater blower motor?
1. Remove the screws of the black protective panel or cover plate on the bulkhead. 2. Disconnect a couple of wires. 3. Open the quick-release fastener or clip holding the motor and lift the motor out. 4. Move the fan blades from the old motor to the new one, the right way round. 5. Install it and check that the motor spins in the correct direction.
Does another model's blower motor fit the E28?
The E28 has only one size of blower motor, so a 59 mm motor fits directly. The fan blades still have to be moved from the old motor to the new one.
Where are the E28 blower resistor pack and fuse?
The resistor pack is behind the centre console in the same housing as the thermostat cell. The fuse for the blower circuit is number 14 (25 A), and it receives power through a relay when the ignition is on.