Hi. I've got a puma thunder and it has developed a vibration at idle. You can feel the car shake which I really annoying to say the least. This is my fourth puma and gave never came across this problem. I have replaced the spark plugs and ht leads. Also the coil pack. Put in redex to clean fuel system and also cleaned the Maf. It's doing my head in. Has anyone any ideas. I have a drop in K&n filter. Wonder has any crap got into the throttle body?