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natedogg · 07-25-2017, 07:28 PM

The torque converter in my 85 C10 is malfunctioning . At about 40mph it feels like it's wanting to lock up, but doesn't. So, I unplugged the vac switch on the firewall and the shuttering stopped and trans shifts like it should . Do I replace the converter or could it be the vac switch or something else? Thanks for any and all suggestions.

07-25-2017, 07:28 PM	#1
natedogg Registered User Join Date: Dec 2013 Location: West, TN Posts: 312	Turbo 350c lock up converter The torque converter in my 85 C10 is malfunctioning . At about 40mph it feels like it's wanting to lock up, but doesn't. So, I unplugged the vac switch on the firewall and the shuttering stopped and trans shifts like it should . Do I replace the converter or could it be the vac switch or something else? Thanks for any and all suggestions.