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I removed the rubber seal on the shaft at the front of the pump and pushed the shaft in several times as the engine sat at 2000 rpm. As I pushed it in, the rack closed and the engine speed reduced; to shut off if I went far enough. Each time I released it, it sprang back without any sign of sticking, but to the 2000 rpm position. Seems like it is just set to rest there at "idle". I have run it with the linkage off and no change.
My one bad throttle body is middle left as predicted. I have run it with all the linkage rods disconnected.
When adjusted to 114mm, the rod opens the rack slightly.
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