Re: BMW 120D 2.0 2005 - Poor performance until 3000 rpm (waveforms) #
Mark Robins
Carl you are definitely on to something, I just checked the car now, when first staring it there is no fault but the problem usually develops in a matter of seconds. So when we started it with no fault present I moved the flaps with my hand and the missy feel under acceleration was there. The weird thing is that after messing about under the manifold the fault has totally disappered. Now this is supposedly a known good second hand manifold, from what I can see I guess the flaps are operated by vacuum via a control solenoid but it's difficult to see so I'm focused on that at the moment. Thanks to all for your insights will let you know how things progressed. Mark
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