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Old 06-08-2011, 10:29 PM
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350SL4spd 350SL4spd is offline
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Join Date: Feb 2004
Location: WNY/NoVA
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After more testing and much more frustration, I have now replaced the ECM with a warrantied used one (no change) and a new O2 sensor (nearly no change).

I still am running at 99% Lean (.10v) after warm up. With the new O2 sensor it seems to run at pretty good DC for a couple minutes after warm-up, oscillating from 5.5-6.5v give or take for maybe 2min (temp is around 70deg C at this point), then it drops to the .10v when it reaches around 80deg.

The car still runs PERFECTLY if you nudge the AF Plate down a couple on millimeters with your finger.

Any new suggestions or info? I'm a couple of weeks away from a burial at sea at this point...
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1972 350SL Euro 4spd
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