derek537

i recently added coolant to my A/C system and after about a day i started getting a weird sound like a lose pulley i think. it sound like a bit of a grinding in way and metal kinda slapping together at idle. any ideas anyone? i also have another sound, more like a ticking in the valve cover area, it mostly happens between 2 and 3 grand when its at a steady idleor while cruising at those RPMS. i would like to get an idea of what the sounds could be before i have some joe shmo telling me something else.