Hi all,

Newbie alert i'm afraid, but i'm hoping someone can help me as my Vectra is doing my head in! I bought my 53 (2004) plate Vectra 1.8 SRI in April (2012) and all seemed to be ok until i started to notice that when i try and pull away from a busy junction there is a slight hesitation until you get to approx 2-3k revs and then it takes off. i took the car to VXL who did a diagnostics test and it showed a error "Fuel Trim Misfire Bank 1", they said that it could be a number of things (being MAF Sensor, Coil Pack, Air leak, Injectors etc) but said to try cleaning the throttle body 1st and see what happens, so i buy some Wynn's Carb cleaner and gave it a good clean up, no change so bought a new MAF Sensor, again no change so decided i could live with the problem for now as i try not to boot it unless i have to - now after about 2-3wks after changing the MAF the car is running really rough at idle and when driving at a set speed the car randomly slows up and the shoots forward (feels really strange!) and basically here i am, i have know idea where i should be going from here and need some advice, how can you check for air leaks and are there particular pipes that are more prone to leaks than others? I do have some Redex Advance but don't know whether that will make any difference or not? Having trawled through many forum sites looking for a solution i've decided to give it a go myself, i'm no expert mechanic (although i do try and do most repairs myself) so go easy lol. I Hope that someone can help, thanks guy's