Quote Originally Posted by kenney View Post
Hi Found this information,but since the vehicle is still under warranty,this should not be your problem. Misfiring at above 3500 rpm.
Mainly no complaint logged. In isolated cases the complaint “ G28 implausible signal” is logged.Rust on the contact surface of the impulse sender G28 to the engine block. This increases the distance of the impulse sender to the sender wheel and the signal can become inaccurate at high engine speeds.One other thing comes to mind and that there has been problems with the wiring harness for the injectors

Thanks will investigate the latter, but 3500rpm? I'd be doing over 100mph at those revs on the motorway! The lumpy running seems to occur more when you ease off the revs and goes when thenpower goes on again.