i have a 2004 f350 6.0L, diesel lariat. only thing new is a new intake. 241,000 kms
last year i replaced FICM and also computer harness at a dealer ship.
while driving the truck the speed between 70km - 90km (50mph- 60mph) the trucks starts to shake and kick only when the rpms are sitting around the 1000 and up mark. it seems that its shakes and sputters only around that area. if give more throttle slowly the shaking and kicks are harder and rapid. i took the truck in once to fix this and they said it was the ficm and they fixed it.... ya not the problem as soon as i drove it home it started kicking in that area. for a while there were no kicks and then just yesterday they are back and harder. im thinking its the transmission cause it only happens when i hit last gear and the rpms are low, i checked codes and nothing at all. what could be the problem????? cause everytime i bring in the truck they fix something else and my bank account gets really low...