Club Wagon is correct----first have to determine if your CC is OEM or some system the converter threw on. OEM will have switches in the steering wheel, after market systems tend to have some sort of control stalk mounted on the column shroud.

Honestly the OEM systems were pretty robust including the throttle cables. Since the throttle was still cable driven from the gas pedal the servo/cable system makes sense. Sadly the company supplying these systems to Ford SCS/Frigette is now out of business so replacement parts for them might be difficult to obtain-----perhaps there were several suppliers though?

Also as Club Wagon says the clockspring could be the culprit but so could the control switches and the servo itself.

Does your steering wheel have the switches in its middle?