idle speed too high ~1800RPM [excerpted from MB DIAG. CD-ROM]
check overprotection relay, fuse on relay may be blown or relay defective, air/fuel mixture too lean. oxygen sensor shorted to ground, check wiring between CIS-E control unit and EHA/Electro-Hydrauilic Actuator; EHA current should be ~75mA

turned out to be that the overprotection relay was blown
started up like a champ after replacing fuse. idles cold at about 850RPM manual says should be around 650 when warmed up.
but after the engine got hot was back up tp 1500 RPM what gives ?? adjusting fuel/air mixture made no difference either.
if i jumped on accelerator jumped down to 900 then worked its way back up again , in gear drops down closer to where it should be manual says idle is supposed to be 650 but is around 800 in gear.