A/C problem, need help.
OK im having a problem with my A/C. it blows cold air but the selector wont change it from vent to floor and what not. i know some of the older vehicles worked off vacum. is my car that way or is it electronic? the reason i ask about the vacum is because it started soon after i took my intake off to change out knock sensors. just wondering if i have a line off or if its deeper than that. i dont have a clue were to start.





