If it still moves up and down at all it probably just needs to be cleaned and lubricated. This should always be done when you change the oil. (Good advice for all of your cars.) If it won't go up or down the drive cable is broken. It is a nylon cable that is inside the antennae and is what pushes it up and down from the inside. Over time and many cycles of flexing they eventually break. The repair is to either replace the entire antennae (expensive) or get a mast kit, take the antennae power unit apart, replace the mast, and reassemble. Other less likely causes are electrical in the motor, relay, wiring, fuses. These are troubleshot in the usual manner. To rule out just get a meter or test light on the wires going to the motor and make sure it's getting power. Make sure the antennae is securely fastened as it needs to be grounded good to work properly. David Teitelbaum vin 10757 --- In dmcnews@xxxx, RJRavalli@xxxx wrote: > I know old automatic car antennas have a tendency to not go > up and down properly all the time, but what is the usual problem > causing this? I've only had mine working one day for the first > time since I've owned the car (just got the radio replaced yesterday) > and I'm already having problems with it not "descending" all the > way down. A couple of the sections seem to not want to collapse > and go down. So what is probably my problem? > > As always, thank you in advance for the helpful replies, > > Richard