FIXED. Issue was a combination of a few small vac leaks (connectors for trans modulator and the 3 way tee at the climate/econ gauge by the firewall) as well as the air flap potentiometer being toasted, installed new potentiometer, cleaned the contacts on the distributor cap and rotor, and adjusted the CIS mixture a bit to fine tune. Runs smooth now.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)