Author Topic: idle speed solinoid  (Read 3720 times)

davids

  • Guest
idle speed solinoid
« on: April 12, 2012, 21:58:31 »
trying to hook up idle speed solinoid on 1971 280sl non euro does any now of a color coded wiring diagram that i could get a copy of?

twistedtree

  • Inactive
  • Gold
  • *****
  • USA, MA, Gloucester
  • Posts: 618
Re: idle speed solinoid
« Reply #1 on: April 12, 2012, 23:00:15 »
Check out the tech manual and the Premium Contents.  There's a really nice color wiring diagram.
Peter Hayden
1964 MB 230SL
1970 MB 280SL
2011 BMW 550xi

davids

  • Guest
Re: idle speed solinoid
« Reply #2 on: April 13, 2012, 15:17:54 »
there is not a color version for the 1971sl us version

ctaylor738

  • Full Member
  • Platinum
  • ******
  • USA, VA, Falls Church
  • Posts: 1169
Re: idle speed solinoid
« Reply #3 on: April 13, 2012, 15:40:29 »
What are you trying to hook the solenoid up to? 

It can be used to raise the idle when the auto trans goes into gear, or when the AC is turned on.
Chuck Taylor
1963 230SL #00133
1970 280SL #13027 (restored and sold)
1966 230SL #15274 (sold)
1970 280SL #14076 (sold)
Falls Church VA

davids

  • Guest
Re: idle speed solinoid
« Reply #4 on: April 13, 2012, 15:48:22 »
idle drops really low when we turn a/c on ,and there is no wiring going to idle speed control ,so trying to figure it out. i found one place that says it should be hooked up to valves on tranny and another post says it should go to venturie and kick down.dont know what to do.

ctaylor738

  • Full Member
  • Platinum
  • ******
  • USA, VA, Falls Church
  • Posts: 1169
Re: idle speed solinoid
« Reply #5 on: April 13, 2012, 16:01:12 »
If you want the solenoid to operate when the AC is turned on, run a wire from 87 on the AC compressor relay (or the compressor) to one terminal for positive, and have a constant ground on the other. 
Chuck Taylor
1963 230SL #00133
1970 280SL #13027 (restored and sold)
1966 230SL #15274 (sold)
1970 280SL #14076 (sold)
Falls Church VA

davids

  • Guest
Re: idle speed solinoid
« Reply #6 on: April 13, 2012, 16:07:50 »
Thank you that sounds simple will do .