My 1991 t-bird will not start. my starter keeps making a clicking sound but it won't start anymore. what can I do because I have no money to go to a repair shop

You need fuel air and spark to run. Check the wires, check you have sufficient fuel.
First guess with Clicking could be a low battery
If the battery is fully charged and all the cables are clean and solidly attached, next culprit would be the starter (bendix)

Go through these checklists
https://www.carbibles.com/why-wont-my-car-start/https://www.familyhandyman.com/automotive/car-won-t-start/https://www.readersdigest.ca/cars/maintenance/what-do-when-your-car-wont-start/

your starter sounds like its sticking. the carbon brushes in older models wear down and need to be replaced. or, starter needs replacing/reconditioning. first try to tap lightly on the starter with a hammer then try to turn the key(bring hammer with you!!)
failing that you may need to get it checked. you could try a hill start to see if it is just the starter.

Are you saying the starter is grinding but the engine is not cranking, or the engine is cranking and making noise and not starting ?

Check battery connections and battery fuse. Battery may not be large enough for the size of your van

If you turn your head lights on and they are dull, the battery is flat or dead.If not may be a starter motor issue.

It sounds as though your connection is not grounded. The starter take a lot of juice from the battery and your connection has to be solid. Check and make sure it is free of debris and make certain that all connections are secure. There should be no wiggling in wires. Make sure also. That you don’t have a starter ”fuse”. Some cars have a fuse and a relay.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/sam_2aa3897a693549cc

Did you also change the starter solenoid when you changed the starter? That is a possible cause.

Can you turn the engine over by hand from the crankshaft pulley to make sure the engine is not frozen or blocked? You will need a large socket to do that, but if you can't turn the engine over by hand, the starter won't be able to turn the flywheel either. The one click is probably the solenoid firing the starter piston to the flywheel but then nothing makes me think the engine is frozen in some way.

But if the starter and solenoid and battery is trying to turn a frozen flywheel, you should notice some drawdown of light intensity. Do you notice any change?

sounds like you have a bad starter.not your alternator.if the battery is good the car should start even if the alternator is bad.you can even drive the car until the battery runs low.the alternator job is to keep the battery charged.soulds like the solinoid is clicking.but no responce from the starter.have starter checked.

I’m happy to help further over the phone at https://www.6ya.com/expert/kenneth_3efc1f8510674f04

have you checked all the grounds and did you replace the starter?

this is always the starter solenoid that does this, replace the starter solenoid.