driving home from work last night on the motorway I noticed shuddering or quiet knocking in 6th gear and rpm seemed almost 'stuck' at 2000rpm, it felt almost as if was trying to pull away in too higher gear.
then today as i drove to work everything initially seemed fine, no noises, good acceleration, however after about 10 minutes the car began to judder again, with the same knocking noise but this time in every gear bar 1 and 2 anytime i had my foot on the accelerator even at slow speeds.
Initially i thought it was a flat spot on an alloy wheel, however when the clutch was down the shuddering stopped completely.
looking on the forums several people have suggested is is a driveshaft issue. - how can i check this? is it a garage job only?
is there any other possibilities? i have no warning lights and i will connect my computer tonight and update you with and ECU issues.
im planning on cleaning my EGR valve this weekend (due to black smoke at high revs and general poor performance), could this be to do with it?
ECU has also been playing up, window problems and flashing odometer
i only bought the car 2 months ago, ran totally fine on test drive, nightmare now.
this knocking/shuddering has to have priority now though. i can live with a blinking light on my dash