General Category > Quadrajet Carb Talk and Tips
Idle speed solenoid
zucchi:
I acknowledge this is an old thread but I have a solution for which I did a video posted on YouTube:
Classic car AC idle compensation options
Hope this helps.
Turbo26T:
Zucchi : Thanks for the reply..I had viewed your videos while researching a solution to my idle speed issue.. What I found was that those parts are long since discontinued
What I came up with is a 12v vacuum solenoid valve ( Omega Enviro Tech P/N 29-40000) that opens to sends manifold vacuum to a carb mounted vacuum dashpot( Guaranteed Parts P/N 779-269 , Rochester 7044055).. The dashpot is strong enough to overcome throttle spring pressure to increase idle speed ...When the AC cycles on 12V is sent to vac switch , that opens and routes manifold vacuum to dashpot increasing idle speed without having to blip the throttle....I had to custom make the dashpot to carb mount plate.
I tried to post pictures of the setup , but I dont know how to do that and could not get them to post
Stan
zucchi:
I'm glad to hear you devised a solution. I would like to see photos. I tried using the "Insert Image" button then insert the http address of the image but that didn't work.
Posting a link works…
https://drive.google.com/file/d/1JhEweHVQeCu4oqndJaPeR4skeX9ry-sM/view?usp=sharing
Uploading the image seems to work too.
Albeit some of the parts I listed in the video's description are discontinued, a couple of the TCS valves are reproduced and sold by restoration suppliers. Nevertheless, despite them being discontinued, it doesn't mean they are unobtainable.
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