Author Topic: Idle Stop Solenoid  (Read 4760 times)

Offline Paul97

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Idle Stop Solenoid
« on: March 07, 2015 - 08:57:50 PM »
How can I determine if my car originally came with an idle stop solenoid?  It is a 1970 340 4 speed cuda.  The original carb was long gone when I bought the car, but I have since found a Carter 4933S that I intend to install when I complete the restoration.  The 4933S I found does not have the idle stop solenoid or a bracket for one.  I don't see any wiring in the engine bay for an idle stop solenoid, but it could have been removed.  I read somewhere that I should only have the stop solenoid if the car was set up for California Emmissions.  Having trouble finding good information.  Do any of you guys know? :1zhelp:




Offline Paul97

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Re: Idle Stop Solenoid
« Reply #1 on: March 07, 2015 - 09:33:42 PM »
No AC.

Offline Topcat

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Re: Idle Stop Solenoid
« Reply #2 on: March 07, 2015 - 09:52:18 PM »
Here is the list I have.
Match your correct year carb series number and year and it'll indicate which solenoid is required.

I have another article on these and I'll try to find it.


3514520 Early (AVS)
3549318 Late (AVS)
DR1114421
70 440 4737S,4739S, 4741S, 4740S
Hex head with cap, no integral bracket

3514892 (AVS)
DR1114442
70 340 4936S, 4937S
Round head, no integral bracket

3438303 (AVS)
DR1114442 or DR1114447 (Have reports of both)
70 440 4738S
71 440 4968S
Hex head with cap, no integral bracket

3438777 (Holley)
DR1114441
71 383 4667A, 4734A, 4668A, 4735A, 6191A, 6193A
Hex head with cap, no integral bracket, but includes wiring harness

2875975 (Holley, AFB)
DR1114429
70 440+6 4375A, 4734A, 4376A, 4144A
70 34043
71 440+6+6 4791A, 4792A
70 426 4745S, 4746S
71 426 4969S, 4970S
Round head with integral bracket

3438338 (Holley)
DR11144 4669A, 4670A
Hex head with cap, and integral bracket

3412059 (Holley)
DR1114420
69 440+6
Hex head with cap, and integral bracket

3438333 (Same as 2875975) (TQ)
DR1114429
71 340 4972S, 4973S
Round head with integral bracket
Mike, Fremont, CA.


Offline Topcat

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Re: Idle Stop Solenoid
« Reply #3 on: March 07, 2015 - 09:56:44 PM »
I found the solenoid article in my archived files.
It's a pdf. Send me a PM with your e-mail and I'll reply back with it.

A very good article with visual identifications.
Mike, Fremont, CA.


Offline Paul97

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Re: Idle Stop Solenoid
« Reply #4 on: March 07, 2015 - 10:37:39 PM »
Thanks Topcat.  PM Sent.  Look forward to seeing it.

Checked my service manual against the carbs you had listed for a 1970 340.  For 1970 with a 340 the AVS-4936S and AVS-4937S are both shown with a Fast Curb Idle Solenoid and are listed for ECS (Evaporation Control System).  The figure clearly shows a solenoid installed.

My car does not have any of the ECS items, so the AVS-4933S is listed as the correct carb for a 1970 Cuda with manual transmission.  The 4933S is listed as a CAS (Cleaner Air System) and when you go to the figure they reference, it does not show a fast curb idle solenoid installed.

I think my confusion came because I saw a number of restored AVS-4933S carbs for sale that had solenoids installed?  Looking at the carb I have, the threads at the mounting holes are shiny and not oxidized.  Makes me think one was installed and then removed.
« Last Edit: March 08, 2015 - 08:46:00 AM by Paul97 »

Offline Topcat

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Re: Idle Stop Solenoid
« Reply #5 on: September 10, 2016 - 06:36:33 PM »
DR1114429 reproduction solenoid is rapidly disappearing.
It doesn't appear they will be reproduced again either.


Dale's Cuda Shop no longer has them
Mega Parts no longer carries them.
many other vendors are out as well.

The only place I was able to get one was a place out of W. VA. called Little Detroit.
If this part is on your wish list, I would get it now while there are a few left.

Mike, Fremont, CA.


Offline Topcat

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Re: Idle Stop Solenoid
« Reply #6 on: September 17, 2016 - 10:40:39 PM »
Mike, Fremont, CA.


Offline 1 Wild R/T

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Re: Idle Stop Solenoid
« Reply #7 on: September 18, 2016 - 01:01:14 AM »
I should have bought a truckload back when they were literally $6......... But Who Knew.....  If I'd bought a truckload I could have probably gotten a pretty good discount.. :smilielol:
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline Topcat

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Re: Idle Stop Solenoid
« Reply #8 on: September 20, 2016 - 10:02:58 PM »
Holy crap!

It sold for $501.00 dollars.
Mike, Fremont, CA.


Offline anlauto

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Re: Idle Stop Solenoid
« Reply #9 on: September 20, 2016 - 10:08:22 PM »
« Last Edit: September 20, 2016 - 10:29:53 PM by anlauto »
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Offline Topcat

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Re: Idle Stop Solenoid
« Reply #10 on: September 20, 2016 - 10:17:04 PM »
All 1970 and 71 Hemi engines were equipped with a carb idle solenoid.  The solenoid is attached to a special bracket mounted between the front and rear carbs on the left side, figure 10. 
The plunger (adjustable) should have a ROUND brass head.  The ID number DR1114429 (note: same as 70 440-6 and 340-6, see fig. 7) is stamped into the barrel facing the front (radiator) of the car.  The positive wire, medium blue in color, connects to the terminal at the bottom of the solenoid, figure 10A.  The wire is a part of the wiring harness.

The 1971 340-4bbl engines utilized a Thermo-quad carb and did not use the types of solenoids discussed here.

I'll be glad to send you the word document with pictures per your pm your e-mail.
« Last Edit: September 20, 2016 - 10:18:44 PM by Topcat »
Mike, Fremont, CA.


Offline Topcat

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Re: Idle Stop Solenoid
« Reply #11 on: September 20, 2016 - 10:54:00 PM »
Here is the link on doing a search. I can't do a direct link since it's a word doc.

Carb_Idle_Solenoids_L1.doc - A12 Mopar

a12mopar.com/yabb/Attachments/Carb_Idle_Solenoids_L1.doc

PARTS-SMARTS 1969 1/2 TO 1971 CARB IDLE SOLENOIDS. Text and Photos by Frank Badalson. In this article, I will attempt to straighten out all the ...
Mike, Fremont, CA.


Offline 60K T/A

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Re: Idle Stop Solenoid
« Reply #12 on: September 21, 2016 - 08:26:50 PM »
Holy crap!

It sold for $501.00 dollars.

For that sale price I'll bet you will see a lot more of them listed on Ebay. That s one of the cleanest solenoids I ve seen.
« Last Edit: September 21, 2016 - 08:31:41 PM by 60K T/A »
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Offline Tazinhawaii

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Re: Idle Stop Solenoid
« Reply #13 on: September 26, 2016 - 04:28:01 PM »
For that sale price I'll bet you will see a lot more of them listed on Ebay. That s one of the cleanest solenoids I ve seen.

 :iagree:  I'm not using mine...  For that price I would part with it.   :thinkerg:
1971 Cuda 440 six pack.  Original TX9 Black on Black.  Located in southern NH.