Hi. Yes I have receipts from the PO to prove it. Both the engine harness and EA harness have been replaced in the last 15K miles. The EA itself hasnt been replaced, I hope that is not bad though. I think it may be something as simple as a spring. In the above mentioned diagram, It shows 2 springs. I can only find one. Its a pain to diagnose since the intake it directly over it. The next warm day I will see if I can get a better look. I noticed that when pulling on the linkage (attached to the throttle cable), the secondary linkage (going to EA) is kind of lazy. The secondary linkage wont retract on its own, the first linkage pushes the secondary linkage back to the closed position. The diagram shows a spring on the second linkage so hopefully that is my problem. A cheap fix is always a welcome addition.

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93 300D 2.5 Turbo, Black/Palomino 273K
09 E350 Black/Black 41K