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General Discussion / Re: TH400 Kick-Down Not working
« on: July 14, 2022, 12:03:47 PM »
I think what you are saying is that you think you can hear the solenoid in the valve body working when powered through the switch. If this is true then I would initially suspect that your modulator is either not adjusted properly (if its an adjustable unit) or the wrong modulator. Here is a link to adjusting the modulator. https://www.chevelles.com/threads/how-much-to-adjust-vacuum-modulator.146481/