In january I had my flywheel and clutch changed now the car at around 1500 to 1800 revs jerks/judders like hell when I put my foot down then it goes when i reach 1900 revs,its a 130 tdi 2002.I had it back to the garage who fitted it and he says its the flywheel,as I sourced the parts myself they are Sachs parts i spoke to the supplier and he said that its not the flywheel.Is it possible to get faulty flywheel and would it cause this problem.