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#1
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Odd W126 Idle Control Valve with a speed adjusting screw
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2000 Mercedes S500 1990 Mercedes 560SEL 1970 Triumph Spitfire |
#2
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Wow... that's interesting. I just came out of a huge ordeal dealing with the idle control system. I looked high and low for valves and control units. My impression of the whole thing is that the control unit adjusts the frequency of the solenoid in the valve so that a mechanical regulator (like a screw in the flow path) wouldn't be needed. I think 1000 - 1500 is kind of high for idling in park. I'd check your original valve to see if it wasn't sticking.
I had one that read perfect in ohms, but got stuck. Granted, I haven't tried to clean it with brake cleaner and wd-40 and it probably is worth a shot, but anyhoo. I'm guessing your original valve got stuck in the range where it effectively limited air flow down low enough to achieve ~700 idle in park. -Troy
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- - - '77 federal 280e - 222k miles - - - '85 380se - 129k miles - - - '07 Chevy truck - - - '79 Datsun 280zx with '82 turbo motor - - - Currently looking for a clean 190e with less than 160k miles. |
#3
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Check out Dave Petryk's creation at the end of this thread over in the SL forum. Idle Speed Air/Control/Slide Valve Confidence Check
Does the OP have a picture of this ICV?
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1986 560SL 2002 Toyota Camry 1993 Lexus |
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