System for controlling an automatic transmission throttle valve and method of use

A system (20) for controlling a transmission throttle valve in a vehicle having a fuel management device (500) having a rotatable linkage member (508) includes an adapter plate (22) which is mountable beneath the fuel management device (500), a bracket (26) which is connectable to the adapter plate (22), and a throttle valve cable (30) which is connectable to the bracket (26). Throttle valve cable (30) has a tubular housing (32) which is fixedly connectable to bracket (26) and a cable (34) which is slidably disposed within tubular housing (32), the cable (34) having a first end (36) and an opposite second end connectable to the transmission throttle valve. An adjustment mechanism (38) having a slot (40) is connectable to the rotatable linkage member (508). First end (36) is selectively connectable along slot (40) so that at any connected position a cable pull distance (CP) is substantially constant. Different first end (36) connection positions along slot (40) result in correspondingly different rates of cable pull and therefore different transmission responses.