I took apart the intake manifold and i checked the intake flap and there is no binding or scoring against the sides,it moves freely i dont understand what you ment by putting a magnet over the bolt cuz theres already a magnet over it? Could you explain further, also i dont know which sensor is the right one for the temp sensor is it one unit or 4 little ones. PLease help, pictures would be great thanks

Allen, the temp sensor involved in these tests is located at the very back of the engine, on the driver side of the valve cover. It's either connected to a big black electrical connector as shown in the photo below, or it's connected to two wires and looks like the photo dlevitt posted in post #34 above. There was a production change in '88 or '89. The big black one is referred to as the 4-pin sensor, the green one is a 2-pin sensor; it's one or the other, but they operate in exactly the same manner. The procedure for testing the 4-pin sensor is what I gave you in my last post above. The test for the 2-pin is slightly different, as shown in the image below.

Attached Thumbnails

   

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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't