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Fuel pressure regulator could be your problem. Need to check yours and check fuel pressure in the line after that.
Just about any 50/50 mix will do. As for the capacity it should be listed in your owners manual. If not, fill radiator and fill reservoir turn engine on and check reservoir level and fill as needed to keep at operating level. Parts store will assist you with amount for your vechicle.
This sounds like a classic catalytic converter failure or plugging up. You probably do not have any check engine lights on as the catalytic converter doesn't have any for itself but might trip an o2 sensor. Have catalytic converter checked but this does sound like the issue.
No, one is the shift interlock solenoid and the other is the transmission position sensor. Two different parts. Can't tell you anything else because you didn't say what the issue is??
Usual culprits are: spark plugs need changed, spark plug coils are going bad or you got a tank of bad gas with water in it. Try some fuel system cleaner in your tank and then watch to see if engine light returns. If so, refer to the first 2 possibilities.
No, you cannot unplug the torque converter you need to have this checked at a transmission shop.
Sounds like you are still not getting fuel to the engine. Need to test for power to the pump and check the fuel relay. http://www.autozone.com/autozone/parts/1991-Jeep-Wrangler-4WD/Relay-Fuel-Pump/_/N-itxmuZ8vdvu?filterByKeyWord=fuel&fromString=search Probably would not hurt to change fuel filter as well.
I would suggest replacing the key ignition and see if your vechicle goes back to normal operation http://www.autozone.com/autozone/parts/1995-Ford-F150-1-2-ton-P-U-4WD/Ignition-Lock-Cylinder-Keys/_/N-j1zamZ8ii3i?filterByKeyWord=ignition&fromString=search
Sounds like a transmission issue. Do you have any check engine lights on?
You probably have a bad thermostat that needs replaced. Secondly, you need to let us know if your engine cooling fan is running after engine warms up.