Date registered: May 2004
Vehicle: 1983 380SL, ivory/dk brown, 46k miles, dual roller timing chain. 1986 560SL, red/white, 190K mile.
Location: Advance, NC
Mentioned: 23 Post(s)
Quoted: 1748 Post(s)
I have a 1986 560SL that idles a little rough but accelerates silky smooth.
Still have it even after replacing my O2 sensor.
My old O2 sensor was sorta a hack job, so I replaced it with a $20 O2 Sensor off Ebay.
I've done a lot of tinkering trying to fix this idle.
Might try disconnecting mine, and might even purchase an OEM O2 sensor to try.
BTW, whats your fuel economy with the O2 sensor disconnected?
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"You have chosen to drive a MERCEDES-BENZ, a car in whose construction and production we have taken great pains because we believe that quality is not a matter of chance." -- page 3, Owners Manual 380SL
Timing Chain, Subframe, wiring harness, Climate Control, Rust prevention, etc.