Hi all. Ive been a idiot and got the jump leads mixed up jumping my 172 the battery seems fine but the car wont start now just turns over for a few seconds then stops itself? ive got a feeling the fuel pump isn't working but all the fuses seem fine somebody has said ecu will be ca put, is it just as simple swopping them or does it have to be coded or anything else? Please help im on the tracks in 2 weeks Thanks a lot john