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Old 11-22-2003, 08:33 PM
ctaylor738 ctaylor738 is offline
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,316
This sounds like a more extreme version of a problem we fixed on hbofinger's 560SEL. The lambda cycle had a huge swing, like from 30% - 70%. You could watch the ratio fall and the idle go rough, then it would snap up to 70%, smooth out and start falling.

We richened the mix about a quarter turn and that moved the cycling to 45 - 55% and the idle smoothed out.

Why don't you put a meter on Pin 3 and see what's going on?
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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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