I have a fiat punto 75 n-reg mk1 1.25litre. A while a go i noticed the warning light showing there was a fault in the induction system. Now it comes on frequently and sometimes my car will suddenly pick up the revs and kick forward which can be dangerous especially when driving at slow speeds behind other cars. Also the car will rev at 2500 revs and this is pretty embarassing. I replaced the manifold on the exhaust but this hasn't done anything except now there is a whistling noise everytime i press the accelerator. Can anyone help me with any one of these problems?