I am tracking down a slightly rough idle problem and intermittent warm start issue - nothing major. I cleaned the idle control valve tonight and was just trying to check the sensors.

I don't have a pic - but I'll try to post one tomorrow.

I do not see one anywhere near the rear of the engine - and I finally located the correct FSM picture showing one at the thermostat housing - at least I think I did. I haven't pulled off the connection yet - really tight.

ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE