How do you change a starter on a 1991 thunder bird

Usually under the dash board or under the hood will be a black plastic box. Lift the lid and there will be a diagram inside showing what fuse or relay goes to what circuit. Good luck. Jeff M.

Some older cars have an OBD1 (code reader) plugs either under the hood on the driver's side next to the hinge, or under the dash on driver's side for OBDII

You should want to hear it cranking with a fully charged battery. Maybe it will start at normal cranking speed.
Too much friction, resistance in the engine? If oil is too heavy, it might cause that. How does the oil appear? Black and gooey? Any indication of sludge-give it a pass-the owner has not done regular maintenance.

Generally speaking, yes.
You could drill out the lock cylinder, or remove the switch on the bottom of the steering column.
The steering wheel and shifter would still be locked.

is your 96 a 4,6 and the 95 is a 5,0 for starters the computer programming is completely different if all connectors are connected make sure the pcm is compatable for the engine swap!!!!

The computer for a 1991 ford t-bird is located on the pass/side lower kick panel, heres a diagram it lists a few module locations but i circled the computer you are looking for . hope this helps.

I have had this problem with my 90' SC, easy check is to clean your IAC valve. Carbon build up prevents if from working right.

this clicking is caused by a defective starter solenoid, on this starter this part can be replaced without replacing the wholestarter.

Did you hook up the wires from the correctly? Some batteries have the pos and neg reversed on the mounting posts. You may need to double check battery cables and alternator cables are charging. If you have a volt meter, you can perform more diagnostic tests on your own. Like testing output of alternator to ensure you are putting out the correct polarity.

stop working on the front brakes you have a weel cylnder in the back hung up and its pushing all the fluid to the right front tire