New to Mercedes World, 1984 380SL
 

Hi all,
I first want to say...what a great place. I am just starting to work on a Mercedes Project...the car came with the new girlfriend. :D and its alot different than my 351C in my Cougar.

Here's the deal...when the car gets semi warm the idle will go way up, up so far it the car will do at least 15-20mph on its own without the brake on. I have read other postings and started to check out the Idle control Unit,the airslide, and temp sensor, over voltage regulator and various other electronic components, only all this is new to me.


What is the logical order to check these parts? Which one I do one first and how? And am I missing anything>>

Thanks for all of your help already and I look forward to "hopefully" getting this car in good running condition...not to say it doesn't already, it does but needs a few fixes. I just dont want to screw anything up.

i would check
 

the idle control unit first. it sounds like that is the problem to me.

tom w

How do I check it the idle control unit?
 

Is there a way to check it without buying a new one first?
Thanks

I think you would have to remove the idle unit and use a volt meter or somthing to test the current going into it

i believe it is
 

possible to disassemble and clean it.

tom w

Here's a site for you:

http://sl107.com/6/ubb.x?cdra=Y&s=4936035941