Common fault on mk3s this

Ive just replaced my drivers side lifter (regulator) on the 3dr.
With the car on, try the switch at the door itself, if you hear a "click" the motor is ok. Its the lifter that is stuffed.
Always good to have a mate hold the glass as you fit the new lifter. Getting past the intrusion bar can be a bit of a pain though.
Be patient

The front lifters in the 3 and 5 door mk3s are the same part, the rears in the 5dr are smaller and different.
If mine stuff out again i will upgrade to good old windys, like the early mk3s had.