BenzWorld Junior Member
Date registered: Jul 2004
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RE: Hesitation at 6 grand RPM
It looks like it's the supplementary air valve that went kapoot. If any of you ever have load issues, i.e., an a/c unit that brings rpms down quite a bit and won't readjust, I recommend looking at this. Another symptom is the car has difficulty idling right after cold start. Until it warms or unless you raise rpms with the throttle it will stall.
The Bosch number is 0-280-140-017 (it will differ slightly with other models but not by much). Further, I was told this is a fairly common problem so just a heads-up.
Also, my points were pitted and needed to be filed (for a temporary fix). I am going to an ALL electronic ignition system soon and will report back to you guys if you have an interest in saying goodbye to points.
71 280SE 3.5 4speed manual