I had broken the key inside the tumbler but was twisted so I couldn't get it out, I bought and replaced the cylinder but now the new keys will not come out of the tumbler/cylinder. and can not move gear shift out of park

this has been happening since the car was almost new. Love the car, like new but for these darned lights.

Replaced the thermostat and checked the vacuum valve above the gas pedal. It seems to be working, but still no heat?

Out of nowhere, our A/C stopped working in our Mystique. Did some testing and then some research online and came up with replacing the blower motor. Did that and it's still not working. What else could it be? A/C & heat not working at all, no problems before today and the car has only been driven on highway the day before. Tested switch & power & they were fine.

Car overheats in minutes, doesn't blow white smoke or lose any anti-freeze. Replaced thermostat, radiator cap, water pump and flushed radiator. Radiator stays cold and system doesn't pressurize

Replaced fuel filter,air filter,M.A.S.,pcv filter in air box,cleaned idle control valve,new computer with update flash(car acts the same with no check engine light),change oil and with proper oil filter,recharged air conditioning system,flushed transmission and transmission cooler. Checked transmission selector switch,seemed to be in proper possition but indicator lights at shifter give duplicate readings.
Runs weird and even weirder with accessories on fluctuating idle but can be revved to over rev rpms and can get over over rev rpms in first gear with a running start but can't pull hills or accelerate off the line have to gradually get momentum, Tried idle reset procederures from Haynes manual,this Mystique is a mystery Sears found no error codes and neither did Ford dealership.

Car has been sitting for 5 years or so. I drained tank, filled with new gas & changed filter. Fuse, inertia switch, & relay are good. Car starts while spraying starting fluid into air intake. Checked fuel pump wires; no power when ignition is on; but it does get power when I remove relay & jump 2 large relay contacts, but no pressure at rail. Any ideas?

i changed thermostat it runs hot and heater not working it worked before i flushed the heater core lines

Getting fuel to the injectors ok checked the line.