Can anyone help with component identification with the attached engine pic. 1985 MB 500 SL euro. I am having a problem with high-idle and need to troubleshoot it. The haynes manual is beyond useless..

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as a followup: I've numbered the items that need ID in the attached Pic.
Which one is the ICV? Crossover valve? Enrichment valve? etc.
Come on guys, somebodys gotta know..

Number 4 is the idle control valve. Number 6 is the cruise control actuator. Number 1 is the control pressure regulator. The sensors I always verify in the etm.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

That leaves 2,3 and 5.
I think 2 & 3 are temp sensors. Is 5 the enrichment solenoid?
And where is the crossover solenoid?

I have never heard or either an enrichment solenoid or crossover solenoid. At least not by those terms. There is a cold start valve/solenoid which plays no part in a running motor. The picture of item 5 is partially covered by the number and isn't clear enough for me to state.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

This would be another view of item 5. Which could be the cold start valve you refer to.

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Also check the Idle Control Unit. Tap it with a screw driver handle while running if it shuts down or fluctuates when tapped(rapped smartly) then it's the ICU.

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1986 Euro 500SEC "RUF" 9:1CR, "Rose"
1985 Euro 500SEC Cabriolet AMG Widebody
1982 Euro 500SEL "Blue"
2001 Texas Heeler (Aussie/Queensland X) "Sulphie",
2012 Queensland Red Heeler "Squeak"
Best dogs I've ever had.

Ok, try it tomorrow AM, where is the OVP and ICU on this car.
Behind glove box?