I have this problem,

1 .My Skoda Fabia 2002 motor is shaking a lot when i am stopped, in Neutro o 1 Gear. i took it to the technician and we changed the sparks and put the computer, but still the problem, he says that is something called "coil" ? the piece that goes connected to the sparks? the thing is that it is consumming a lot of gasoline.. may this be related...?

2. This problem is with the Air Conditioner, which in speed 4 makes the typical sound of a fan running its maximiun capacity, but there is no such strong air flow, i ve heard there is a filter... dont know.. need help...

1.The coil supplies the spark plug with voltage needed. If it's faulty it will misfire.

2.There is a pollen filter. It maybe blocked.

pollen filter housing cover under the glovebox area , just slide the 2 clips along and the cover comes off , then you can pul the filter down , put a plastic bag or something on the carpet to stop the bits