Jaymz1176

Bought a Monte Carlo 1.6 TDi in October (42k miles) . Since then warranty has replaced both the exhaust gas temperature sensors pre and post dpf due to the dash giving me the disco coil light. But throughout all of this I have a judder / misfire at specific points in the rev range 1350-1500rpm in 4th gear at 40mph 1350 - 1500rpm in 5th gear at 50mph Driving at constant 40 or 50 is a nightmare. Garage claims that the diagnostic says nothing is wrong and they don't know what is wrong. Owner of the garage drove the car himself and acknowledged something wasn't right but the service depart have said as it does it when driving they can't diagnose it or fix and I'll have to live with it. The mechanics didn't even drive the car to feel it for themselves. PS I've had the wheels all checked etc and the clutch is fine.