The 2 vacuum tubes to the vacuum switch at the key switch aren't symmetric, if like my 1985 300D. Insure you didn't swap them. That switch is a single pole double throw (SPDT). The hose to the stop actuator must be to the common of the switch. The switch connects its common port to either vacuum or atmosphere.
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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans
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