All,
My 528 auto has an annoying flat spot around 2500 - 3000 rpm ... it doesn't have it all the time but seems worse when it's hot - she's certainly fastest when the engine is cold (unfortunately).
Is my 'vanos' unit, or perhaps the control solenoid kapput? (I have the single vanos unit it seems)
tia
Steve
have you checked the ground? I've seen bad ground at the ignition coils do similar problems. for some reason bmw's and mercedes have lots of electrical problems for at least the past 8 years.
Oskar
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