Originally Posted by
AK83
Symptoms sound very similar to my brother's TD5 D2.
Suddenly developed rough running. No error codes from the nanocom tho.
Changed all the obvious stuff, MAF made the most difference, but as OP describes seems to feel like it's running on 4-4.5 cyls.
Similar vibration like a out of balance wheel or something just on lockup at about 80-ish km/h.
Difference is that this one you can power out of it a little to rid the vibes(and or back off too).
Other thing with the vibes in 4th at lockup point, if we drop down to third, engine revs rise from about 2K to about 3K RPM .... vibes all but gone.
He's doing the injector loom next up to see if that fixes it.
Any luck on yours(yet) Fluids?
