I had a bunch of work done about a month ago and this problem seemed to appear after that. The engine runs smooth in idle when it's in park, but when it's in gear it starts reving up and down. It's a real problem when trying to parallel park, the car moves in surges. If I put the pedal down it stabilizes.
The work was; rebuilt injectors (from MS), new fast glow plugs, new valve cover gasket, valve adjustment, replaced leaky o-rings on injector pump. . .
It seems to me to be in the injector pump, any thoughts?