When I come to a stop or a real slow pace, Foot down on the clutch and the engine gives one BIG rattle, then climbs back to the 900. and then its fine. Doesn't always do it, just 3 times out of 5 i would say. Its p*ssing me off...proper!

Any ideas people?? Thanks!

 

Coil pack(s) or plugs maybe the cause, quick and easy to check/change

 

MAF?

 

idle control valve?