most likely the coil housing is cracked or distributor cap
Not sure why you are describing the shut down as being power factor related. If it shuts down after a short period I would expect that the motor has a thermal protection cutoff and the shut down is being caused by a bearing over heating.
More than likely you have a clogged line, the sweeper heats up and shuts off before the motor burns up. After it cools down it will start again. Take the sweeper apart and clear the lines or take it to a repair shop.
no just the motor shuts down
Hold the power button until it shuts down and then when it has, wait about five minutes. After that, press the power button to start it back up again.
The starts and pressure drop start it again and it shuts off again
well that means that your car just BLOWS
YOU WILL HAVE TO INCREASE THE IDLE RPM.
Replace blower motor it's burned up.
the battery is flat or its to old
Ignition module
I think that you might have a bad blower motor, but I'm not really sure. Here is a link to a "How To" video of replacing the blower motor--> http://www.youtube.com/watch?v=frZl49p2quk It is very easy to do and don't waste money taking it somewhere to get it installed.
Need more info. What kind of car? What model? What year? How many miles? Most cars will run with no oil in the motor, Only for A short time, This will ALWAYS ruin motor, Oil level being full does not make the car have oil pressure, although the car will not have oil pressure without oil in the motor. Going by the info. given, The motor needs rebuilt, This may not be the case though. could simply have a bad sending unit or guage.