Ok, i feel like nothign has gone right with this car the last few days. I replaced the battery yesterday, the old was was having trouble holding a charge, simple i change it no biggy it starts, ran good, on my way home yest i stopped for gas, got some shell gas and was on my way, about 2 min later i hear my engine making a loud noise, sounded like i had my foot on the gas slightly i get home and check the oil, its fine no shavings smells good, the trans is old with it being cold i planned on changing it this weekend, everything seemed normal, this am i start her up, making that same loud noise again, i let her warm up a bit and goto shift i makes a strange noise shifting into gear, ok maybe still cold, as im driving shes not shifting the same and the noise is still there from the engine, but i have not lost any engine power. HELP!