KMJ Posted November 13, 2018 Share Posted November 13, 2018 My "49 Chrysler stalls at stops when down shifting. Otherwise it runs great. Any ideas? Link to comment Share on other sites More sharing options...
Rusty_OToole Posted November 13, 2018 Share Posted November 13, 2018 Could need a tuneup. Could be worn out engine. Could be idle speed. Could be governor points need cleaning. Could be a lot of things. I would start with compression test and tuneup if they have not been done in a while, otherwise clean the governor points. Be careful, they are soft silver. Spray with contact cleaner and drag a strip of white typing paper between them to clean. If they leave a dirty streak on the paper do it again. Link to comment Share on other sites More sharing options...
c49er Posted November 14, 2018 Share Posted November 14, 2018 How long have you owned the car? Did the car use to down shift OK before? Is the transmission wiring all original and in good condition? Does the engine idle really smooth in nuetral? Link to comment Share on other sites More sharing options...
KMJ Posted November 29, 2018 Author Share Posted November 29, 2018 On 11/13/2018 at 5:37 PM, c49er said: How long have you owned the car? Did the car use to down shift OK before? Is the transmission wiring all original and in good condition? Does the engine idle really smooth in nuetral? Link to comment Share on other sites More sharing options...
KMJ Posted November 29, 2018 Author Share Posted November 29, 2018 i had the car for 6 years , it was grandfathers, always stored inside and in incredible condition. Only 29,000 m. Yes it did downshift fine, idles really smooth in nuetral, original wiring in great condition. I take great care of it, all work done by me. this is the first issue to come up. Always dependable, never has let us down. Link to comment Share on other sites More sharing options...
c49er Posted November 29, 2018 Share Posted November 29, 2018 (edited) Go to mymopar.com and search for factory training films. The one I mentioned volume 4-1 shows the 1949 chrysler transmission diagnosis.. All the factory service films for your car are there. ... there are 3 filmsalone on the M-6 trans and show downshifting issues and idle. As already mentioned you should check the transmission governor points for oil saturation... carefully clean them with electric contact cleaner.... If it only dies when you feel it downshift automatically coming to a sto................ yet you can leave it in gear idling smoothly say in the driveway..... Then it's probably a transmission circuit issue that's groundingthe ignition points too long on down shift. Edited November 29, 2018 by c49er (see edit history) Link to comment Share on other sites More sharing options...
KMJ Posted December 1, 2018 Author Share Posted December 1, 2018 On 11/28/2018 at 10:31 PM, c49er said: Go to mymopar.com and search for factory training films. The one I mentioned volume 4-1 shows the 1949 chrysler transmission diagnosis.. All the factory service films for your car are there. ... there are 3 filmsalone on the M-6 trans and show downshifting issues and idle. As already mentioned you should check the transmission governor points for oil saturation... carefully clean them with electric contact cleaner.... If it only dies when you feel it downshift automatically coming to a sto................ yet you can leave it in gear idling smoothly say in the driveway..... Then it's probably a transmission circuit issue that's groundingthe ignition points too long on down shift. On 11/13/2018 at 5:37 PM, c49er said: How long have you owned the car? Did the car use to down shift OK before? Is the transmission wiring all original and in good condition? Does the engine idle really smooth in nuetral? Link to comment Share on other sites More sharing options...
KMJ Posted December 1, 2018 Author Share Posted December 1, 2018 Thank you so much, the service videos were great, I wish we could go back to 1949 . I think I have it narrowed down to the interrupter switch. Thanks again for your the tip. 1 Link to comment Share on other sites More sharing options...
c49er Posted December 1, 2018 Share Posted December 1, 2018 I bought over 200 of those Dealer Ross Roy filmstrips/records and tech booklets back in the early 70's and used to watch/listen to all of them including the car and truck sales films. They taught me everything about the 1948-52 MoPar cars which I still have today and I still have all these filmstrips and records.🙄 But now that they are on the internet it only takes a few moments to find one online to look at! Mr tech sure is smart! He's the man.👍 Link to comment Share on other sites More sharing options...
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