Re: So much trouble through polishing the car
You could try to remove the MAF sensor connection to see if that improves the cars performance. If it doe sthen the MAF has gone bad.
The naf, on a 2.0L is btween the air filte rbox & the throttle housings, got 5 wires in its connector.
A an battery that goes flat from excessive use often times never revover properly. Try fitting another into it from a nmates car.
BTW when jumping cars you need to connect + RED to + RED & - Black on the jumping cat to *some metal part like engine or gear box* of the car been jumped.
DO NOT connect Black to Black.