Hi guys, i actually have two issue first.. if i let the clutch out to hard or jerk the car hard it sounds like a loud knock coming from the rear end.. anyone ever have the same problem and know what this could be? Also my stang was sitting for a good 6-7 months and ran completely fine before besides the knock..when i went to crank her over she didnt start i assumed it was the battery and i was right the battery was completely dead so i jumped it to try n charge the battery but after 15 mins or so she just shut off. And all the gages were reading correct nothing seemed wrong.. does anyone have any insight on what this could be??