Update, after some more cleaning, and checking vacuum lines (I thought MB diesels had a lot of vacuum lines) It will now rev to 3000 at start up without much problem. After about 30 seconds it's like a governer kicks in and speed drops to 1700-2000. If I drop back down to idle it will rev to 1700-2000 but not much higher. If I shut the car off and let it sit for a few min. it will do the same thing all over again. Any more ideas?

Thanks 4speed, I've got the cruise control unplugged for now until I can get everything else working properly.

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