i had this problem once. On 88-02 if you adjust the cable at the thumb throttle, it can pull the cable at the TORS and open the sensor switch on the TORS unit, which will say the throttle is open, but the switch on the thumb throttle stays switch closed =throttle closed
if the TORS unit thinks the throttle is open and the thumb switch says the throttle is closed, it causes the TORS computer to engage and kill the engine, same as if the throttle is stuck open.
On the pre -02 Blasters, when the TORS is functional, the thumb throttle switch must open before the TORS unit switch or the TORS computer will kill the spark. I would loosen the cable at the thumb throttle to give it 3-5mm free play, make sure and test it at all steering angles. You can also just unhook the wires going into the TORS unit on the carb and/or unhook the wires going to the tors unit under the little hood, then it will never activate the TORS unit, you will loose protection from a stuck throttle, and it is advisable to hook up a kill tether so if you wreck or fall off it will kill the motor throttle stuck or not.