i went thru a big pothole on the road and got a flat tire i changed it with a donut and got on the highway heading my house. the car felt so light and faster with a donut i was just flying i think the car went into the red zone in the rmps but the car was still driving good. next day i turned my car on and i started driving it and it started forcing it self but not moving or forcing the engine and moving little or wen i press gas the car goes on neutral forces it self and then hits 1 or 2nd gear. and wen somethings wen u let go of the gas the car starts slowing down its self. feels like im hitting the breaks for 2 seconds and lettin it go again. oh its automatic 2000 honda civic 4dr. could it be the sparplugs or the transmition

 

well first off DO NOT DRIVE FAST WITH A DONUT TIRE!!!!!!!! you should have read it on the donut itself!

so either get your tire replaced and back on the car or at least remove the donut tire from the front and put it on the rear.
i never put the donut tire on the front its really not safe!
see the donut tire is smaller than the regular size tire so one wheel is not turning as fast as the other and with them being the drivetrain wheels thats bad! i would only put them on the rear rolling wheels.
and still never drive over the recomended speed on the tire!