TBA Solution
 

This is for all of you who own a 129/124/140/202 chassis and have had or are having problems with your TBA(Throttle body acutuator). I got mine from Mark at Mercedes Parts where I got a rebuilt unit for $400.00 plus 200 for the core. It was ALOT less expensive than the 1500-1800 they want now for a new one. It also comes with a 6 month warranty. When I spoke to him he said he doesnt offer technical support and to make sure that the TBA is the culprit.Often times as he stated it is the injection harness or wiring harness causing the fault first. Make sure that is ok before you replace the TBA. But he sounds like he stands behind his product. It has solved all of my running issues and it has been the last part I wanted to replace after the Head gasket, wiring harness etc. But it is soooo much nicer now, my cruise control works again and my car idles again with the AC on!!! :D I hope this helps everyone!!!!

Chris

Cool! A great resource Thanks for posting.
Brian

This might be worth looking at this link:

http://v12uberalles.com/throttle_actuator_rewire.htm