Johan Boltendal Posted July 28, 2022 Share Posted July 28, 2022 What purpose does this part have on a 41 Chrysler hydramatic? It is electric operated and is conneted to the fule bowl of the Stromberg carb. thanks Johan Link to comment Share on other sites More sharing options...
TerryB Posted July 28, 2022 Share Posted July 28, 2022 I believe it is a control or “kick down” switch for the transmission. Link to comment Share on other sites More sharing options...
Johan Boltendal Posted July 28, 2022 Author Share Posted July 28, 2022 Hi, thank you for your reply, what makes you think it is what you say it is, also what could be the function of the direct/open link with the float chamber of the carb. Link to comment Share on other sites More sharing options...
TerryB Posted July 28, 2022 Share Posted July 28, 2022 (edited) Your post said your car was equipped with a hydramatic transmission which I believe you meant automatic transmission. A hydramatic transmission is a General Motors product. Chrysler had a semi automatic transmission that required a switch mounted on the carburetor to operate. When the Chrysler car got to a certain speed you had to lift your foot off the accelerator which allowed a switch on the carburetor to send a signal to the transmission to shift gears. I was thinking the switch in your picture was the one that sent that signal. I did not look closely at its connection to the float bowl. If the switch is sensing fuel pressure in the float bowl then I’m not sure what it’s function might be. Edited July 28, 2022 by TerryB (see edit history) Link to comment Share on other sites More sharing options...
CarlLaFong Posted July 28, 2022 Share Posted July 28, 2022 Whatever it is, it looks non stock to me. I can't imagine why any transmission switch or sensor would be plumbed into the fuel inlet 1 Link to comment Share on other sites More sharing options...
Johan Boltendal Posted July 29, 2022 Author Share Posted July 29, 2022 Thank you both for sharing the thoughts and info. I'm a Cadillac guy hnce the hudramatic, sorry for the confusion Johan Link to comment Share on other sites More sharing options...
61polara Posted July 29, 2022 Share Posted July 29, 2022 I agree that this is aftermarket, but confused about what it may be. It looks like it is attached to the fuel inlet on the carburetor with no fuel line going to it. It also, looks like it has a vacuum diaphragm which actuates the switch, but again, it looks like it is screwed into the fuel inlet, which would have no vacuum. The semi-automatic transmission on the '41 and '42 Chryslers were vacuum shifted. The only function of the carburetor switch was to momentarily kill the ignition to permit the transmission to be downshifted for additional acceleration. It was actuated by the throttle linkage. Link to comment Share on other sites More sharing options...
sagefinds Posted July 29, 2022 Share Posted July 29, 2022 There is a nub on the opposite end of the outlet,maybe there is an inlet that doesn't show in the picture. Could it be an electric fuel pump although smaller than any I have seen.? 1 Link to comment Share on other sites More sharing options...
TerryB Posted July 29, 2022 Share Posted July 29, 2022 Or a pressure switch to turn off an electric pump? Link to comment Share on other sites More sharing options...
supercub Posted August 1, 2022 Share Posted August 1, 2022 Enrichener device for cold engine or auto choke? Link to comment Share on other sites More sharing options...
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