If little or no resistance is felt while operating the temperature control lever, the problem is most likely which of the following?
A)There is a vacuum leak between the intake manifold and control valve
B)The control cables have slipped loose from the dash control or door arm
C)The electric servomotor is burnt out
D)The heat control valve is seized

Question

Quizplus · Accepted Answer

The lack of resistance when operating the temperature control lever typically indicates a mechanical disconnect or slippage, such as the control cables having slipped loose from the dash control or door arm. This prevents the lever from properly actuating the mechanism it controls.

If Little or No Resistance Is Felt While Operating the Temperature