I have a 97 Tacoma and recently ive noticed a sort of clanking (?) sound coming from the rear end of it. Ive only noticed it at slow speeds so far and i havent really driven at high speeds since ive noticed it. I was wondering if anyone had any ideas on what it could be, and an estimate on how much it would cost to fix. Also, recently my A/C quit blowing cold, and it smells really bad if I do run it. Any ideas on that along with an estimate would be great too. Thanks!