Low pressure switch shutting the unit on and off. Possibly low on freon.
Probably a bad key switch.
Carb.? May need to be re-built or replaced
You have a problem
Check ur cps sensor
If you mean a inertia switch that shuts off the fuel pump in case of a wreck or something, No. The computer shuts it off if the engine is not running.
in most cases the term keeps running means it spits sputters and pings till it complete shuts down. this is a symptom of the timing be retarded to much. i would suggest checking you timing remember to disconnect the computer control to the distributer before checking the timing, not the power wire the other. if the car actually is running with the ignition off the the ignition switch is bad.
Replace the ignition module and see if that don't fix your problem.
Some turbo cars will be fitted with a turbo timer, which keeps the engine running for a specified time after the ignition is turned off. This allows the turbo to cool down before the engine shuts off, which prevents potential damage to the turbo.
Hard to say. If you mean it keeps running after you turn the key off it sounds like it's all carboned up. The carbon (inside the cylinders) gets hot and acts like little spark plugs and keeps the engine running and knocking a while. If it does this all the time I suggest you do a compression check to see if it has a bad timing chain.
It sounds like you might be running low on memory. If you get to a point where you can get to your desktop and access the internet, go to reimage.com and downlaod their 5 min scan for your hardrive to review your PC's stability/ performance.
Check your brake fluid level.