Hi have been having a bad vibration from 1300 - 1700rpm on my TD4....(bad in 4th & 5th at 30/40mph) engine goes well and is willing.....but I had this boomy vibration I could not source. Well, on my truck I had different tyres front to back in pairs. (as with the car when I bought it)....Landranger services thought it would lead to trouble .... with the IRD ..... so I measured tyres and found a 5mm mismatch in diameter!!!
So I changed the front tyres so they were all the same.....and bingo car felt no different....but 90% of vibration has gone! I can only think the 4wd set up on these waggons is real sensative......maybe you get a weird harmonic being generated that effects the dual mass flywheel......so to all you effected check your tyres and perhaps try changing front to back...
So I changed the front tyres so they were all the same.....and bingo car felt no different....but 90% of vibration has gone! I can only think the 4wd set up on these waggons is real sensative......maybe you get a weird harmonic being generated that effects the dual mass flywheel......so to all you effected check your tyres and perhaps try changing front to back...