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I wasn't doing Mopars back then, but on GM cars the slow closers on the throttle were mostly on stick cars. The reason being that during emissions testing, dropping the throttle closed quickly increased the unburned HC and CO. Stick cars had many more times of throttle-off, throttle-on because of shifting.

R.

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Dont want to start a debate here but that is wrong. The dashpots are used mostly on auto cars. I just read it again in one of my auto training manuals from years ago just to be sure my memory was still working. Ron

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Ron , sorry but you are wrong , my 69 383 4 speed bee and dart both have dashpots , as far as mopars are concerned it's a 4 speed thing.

The electric solenoids are used to set idle speed, some engines had a run on issue and the way around it was to set the throttle blades completely closed and use an electric solenoid to set and maintain idle speed.

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Ok John it looks like we are both right. Here is a page from one of my auto books I got over the years and it says they use them on auto's.



Then I decided to pull out my 68 Dodge service manual and it says its used on manual trans. So can we both be right ?? Why not ?

And here is the page from the Dodge 68 service manual. I was surprised to see this as all of my books I got over the last 35 years in my tech training seemed to always say auto cars have them but I was wrong to doubt some on here who were also right. Ron