450se cold start idle

[Bizarre]

I have a mercedes 450se w116 1979 with i think is a little problem.
When i cold start the car the idle speed is very high, and when the engine gets hot the idle speed becomes very low, even so low that the engine stops running when i realese the throttle.

Anyone have any thoughts of whats the problem might be
(Sorry that my english isnt that good)

[mbdoc]

Car uses a mechanical warm-up additional air valve, thermostatically controlled.

Most likely your issue.

[Bizarre]

Originally Posted by M.B.DOC

Car uses a mechanical warm-up additional air valve, thermostatically controlled.

Most likely your issue.

Okay. a stupid question tho, do you perhaps know where it is located?

Thanks for replying

[Bizarre]

Originally Posted by Bizarre

Okay. a stupid question tho, do you perhaps know where it is located?

Thanks for replying

Doesnt anyone know?

[jimandsuzy]

On my 500SEC it's at the front of the engine laying horizontal, just a little to the drivers side. It has a 2 pin connector and some vacuum hoses on it. If you do a search you can find pics of it.

[Bizarre]

Originally Posted by jimandsuzy

On my 500SEC it's at the front of the engine laying horizontal, just a little to the drivers side. It has a 2 pin connector and some vacuum hoses on it. If you do a search you can find pics of it.

Okay, yeah ive done some searches now and i found out where its located. gonna go to the garage where i have stored the 450 for the winter and check it out sometime next week to see what might be the problem.

Thanks for the reply