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Unfortunately the heater box as a whole needs to be deinstalled. Even though you can see the motor from the engine compartment, it will not fit up and out of the cowl vent area...( I've tried twice...)

If the car has A/C, its a bit more difficult. The non-A/C version is simpler, the flimsy plastic tray must carefully be removed from the cowl area under the hood. The radiator must be drained. There are two medium size hoses that run from the engine compartment through the firewall and to the heater core. You can find them and the clamps that hold them very near the gas pedal. Its a good idea to just cut them and replace them with new ones so they don't fail later. If you want to reuse the ones you've got, you must be VERY careful to loosen the hose from the pipe that goes inside it after you loosen the clamp. Sometimes I resort to using a small screwdriver to slide between the hose and pipe to break the friction of years of attachment. You will also need to deinstall the radio to access the two screws that hold the heater control mechanism in place. The fan knob and vent/heat control knobs just pull straight out of the dash. There is also a pair of wiring plugs above the gas pedal that must be disconnected. (yellow, brown, and white wires?) There is a plastic bracket between the dashpad and the heater unit that has one screw through it. There are 4 screws with 8mm heads under the hood near the fan motor itself that are probably obscured with sealant. They hold the heater unit in place. I've found that a 1/4" drive ratchet, short extension, and short socket work best for removing these screws. the unit will likely be held in place by the sealant around the mounting flange after you remove all the screws. When you dislodge it, be careful of the control tab on the bottom of the unit that opens and closes the floor heat flapper, its easy to break it off. The blower motor itself is held in the heater unit by only one screw.

Reinstallation is mostly just the reversal of the procedure. You will need to apply some sort of sealant to the mounting flange to keep water from getting into the car after your done. I often use weatherstripping ribbon that you might get from a home improvement or hardware store.

If your car has the knee bar/ tray under the dash... you should try to find a Bentley Manual to follow the removal procedure. I have found that you have to disassemble a major portion of the dash to access the mounting screws for the kneebar.

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2010-01-10 15:51:20
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Q: How do you install the blower motor in a 88 VW cabriolet?
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