If fuel has stopped reaching the engine (im guessing as you misspelled that word). Show to the same mechanic who fix the radiator, he must have fingured something for you to come back again and pay some money. lol.
I really think these both things arent related and you must be thinking this due to some other reason.
Cruise is electronic wired wire hold the throttle and nothing else it do on engine. Its a same throttle that you push with gas pedal or with cruise control wire, its same.