I only get cool air through my floor vents and I found out from output system diagnostic cycles that the air mix doors beneath the heater core were not opening to let heat through.
I know that the power servo controlling these doors is holding vacuum.
I will be following the diagnostic procedures for the doors, auto amplifier, and solenoids but I was wondering if someone already has experience with this issue and if a broken potentio-balance resistor could cause this. Also, I have trouble understanding the leftward arrows and "(Ad)", "(Av)", and "(Af)" drawn in table K1 of the FSM (1984) on page HA-73- Trouble Diagnosis: 2) Doors, Water Cock, and Compressor Diagnosis.
I know that the power servo controlling these doors is holding vacuum.
I will be following the diagnostic procedures for the doors, auto amplifier, and solenoids but I was wondering if someone already has experience with this issue and if a broken potentio-balance resistor could cause this. Also, I have trouble understanding the leftward arrows and "(Ad)", "(Av)", and "(Af)" drawn in table K1 of the FSM (1984) on page HA-73- Trouble Diagnosis: 2) Doors, Water Cock, and Compressor Diagnosis.
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