It's lean. Check for vacuum leaks, and make sure the fuel supply is functioning properly.
Clean the carbeurator and lube the throttle cable.
could be a vacuum leak, or throttle positioning sensor
No
Yes it can.
I don't think your asking the Q right it must be the engine doing it, maybe egr
Sounds like a vaccum leak
I would check the ignition timing and set it to the desired specifications. Next I would clean the throttle plate.
lack of fuel
bad fuel bad spark plugs incorrect timing
water in the fuel can cause an idling motor to sputter and/or die.
a rapist in your trunk
Yes. When you suspect it is clogged, replace it.