hi im new to this whole fourm thing, but i have learned alot from here so i figured maybe some one can help me, the issue i am having is my 85 firebird with the tune port has a stumble to it with light throttle but if i stomp on it it reves up like normal and i noticed that non of my gauges work the back light turnes on but they are all froze in there last posision. now it drove fine earlyer today and all i did to it after i drove it was change the oil and replaced the fuel filter, and i checked twice and i did put the filter on in the right direction. soim just wondering could the computer be the issue to my it stumbles and my gauges dont work or is there somthing else that could cause this, i mean maybe the gauge thing is just another issue that happened at the same time. idk i need help thanks