Hello again All,

I have had an account here before, and have recieved some great help from Phil before...it seems my account must have expired.

So, I have an '82 380SEL with an odd idle issue. The car will sometimes rev to 2000+ idle speed, but at other times idle perfectly normal. It may race for a week, or a day, or an hour. It may idle normally for the same amount of (completely random) time.

I have guessed, after reading through the forums, that it may be the idle control system ECU. I would guess the problem is much more likely to be electronics rather than vacuum, given the randomeness of it's occurance.

If it is the ECU, where on the car would I locate the box? I think under the dash...but where?

Thanks for the advice/help!