Author Topic: Device (constant Speed Solenoid) on intake. Why is it there ?  (Read 254 times)

Pinder

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I have always wondered why on my car which is  a 4 speed manual there is this device on my intake that is not wired and does nothing. I think it is for automatics. why is it there on my 1970? maybe this is a replaced intake? or maybe this is just how they installed it for both manual and automatic in 1970? thoughts on this?

Regards
 
  Pinder
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.

ja17

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Re: Device (constant Speed Solenoid) on intake. Why is it there ?
« Reply #1 on: August 04, 2022, 04:44:09 »
I have seen other pagodas which came from the factory with these constant speed solenoids never wired and never meant to be used.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
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Cees Klumper

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Re: Device (constant Speed Solenoid) on intake. Why is it there ?
« Reply #2 on: August 04, 2022, 05:23:11 »
Was it not also used on A/C equipped cars? I suppose your car does not have A/C though, or not anymore.
Either way it's somewhat valuable these days, Authentic Classics selling it for almost $1,300.
Cees Klumper
1969 Mercedes 280 SL automatic cream white
1972 Lancia Fulvia Coupe 1.3 rosso corsa "Luigi"
1990 Ford Bronco II 2WD colonial white

Jonny B

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Re: Device (constant Speed Solenoid) on intake. Why is it there ?
« Reply #3 on: August 04, 2022, 15:17:14 »
I agree with Cees. My 1970 (automatic, no A/C) has the solenoid and it is not wired in.
Jonny B
1967 250 SL Auto, DB 568
1970 280 SL Auto, DB 904

Mike Hughes

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Re: Device (constant Speed Solenoid) on intake. Why is it there ?
« Reply #4 on: August 04, 2022, 16:09:24 »
I would venture a guess that, in an age when it was NOT a $1300 part, this might have been included in what might be termed a "USA" or "North American" spec package as it became clear that dealers were adding A/C to 280SLs with increasing frequency.
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Pinder

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Re: Device (constant Speed Solenoid) on intake. Why is it there ?
« Reply #5 on: August 05, 2022, 16:29:06 »
Thats great information. I confirm mine has no AC and is a stick shift. I did power it up and it does work!
1970 280 SL Light Ivory DB 670. 4 Speed manual shift no AC Limited Slip Diff.