Q&A

 Rookie

i was doinf a self test on the truck trying to see if i had any stored codes...truck was running fine after i put a iat sensor on it,anyway i hooked the pos.wire into the pin where your supposed to hook to communicate with the ecm...well after that the truck would not start,i waited an hour and truck runs but i have to hold the throttle some,it will not idle on its own.i figure i likely damaged the ecm but wanted to check relays?so i have the battery unhooked for the nite and will try again tommorow otherwise i figure on a new ecm from advance...any suggestions would greatly be appreciated,thanks