Don't worry about the sensors now, just test the glow plugs ~ if you cannot figure out which hole to probe in the relay's MPC, touch each glow plug with the Ohmeter's probe, very easy and simple .

FWIW, as soon as it starts, if the outside temperature is in the 40's F, the engine should run smoothly off idle even when it's stone cold .

If not the trouble is else where .

Like everyone says : DO THE BASICS IN THE PROPER ORDER .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better