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Originally Posted by 1987MB260E
Idle Air Control (IAC) Module = Idle Control Valve ??
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Yup, that's the IAC. Cute, ain't it?
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Originally Posted by 1987MB260E
Symptoms of a faulty PCV valve are poor idle and excessive pressure in the crankcase.
I could not locate the PCV on 260E. Where should I look for it?
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There is no PCV valve. Just a rubber tube from the valve cover to the intake manifold. As you're standing in front of the bumper, looking at the engine, it comes out of the driver's side of the valve cover, about halfway back. It makes a 90 degree turn down and attaches to the intake manifold. If you pull it off the valve cover while the engine's running, there should be a pretty strong vacuum at idle.
As to the other two vacuum goodies, I haven't a clue.
Vacuous,