My 91 Lincoln towncar won't start. I get 1 click

SOURCE: Problems with Gearshift 2004 Lincoln Navigator

Turn the key forward a notch then it should come out. If you are turning the key all the way off it enables the accessories (radio etc), locks the key in the ignition and disables the gear shifter.
If thats not the case then there is a button to be depressed so that the key can turn anticlockwise>off another click and the key can be removed.
It'll be one or the other....faulty ignition lock is the only other diagnosis

SOURCE: Car will not let you take it out of park

under the dash, above the break peddle are two switches, check for adjustment of those switches . one is for the break lights and another one is for the solenoid what is locking your shifter.

SOURCE: 91 toyota camry 4 cyl. It will not start even with

Hi Mike
Try lightly tapping the starter with a spanner and at the same time turning the key to start, if it starts you need the starter overhauled.

Regards Gary M

SOURCE: 1997 Lincoln Towncar. Shifter stuck in park

There is a switch mounted on the arm of the brake pedal (under a plastic cover held on with 3 plastic push-pins). There is an electical connection attached to this switch. In my case one of the wires had broken and was not supplying electricity to the switch. By fixing the broken wire it allowed the shifter to properly move and got the brake lights working again.

SOURCE: My brand new 2011 Dodge

It has to be under warranty....Call the dealer and have them pick it up....