Ok, 97 TC Sig Series just driving to work AC on come to light car surges bogs down battery light comes on, so I turn off AC light goes away(batt is old, corroded) so I pull in to work batt light comes back and I loose power steering! So I'm like WTF! So I run in, leave car running in case it won't start back up when I leave, I come back out my son says dad your car was smoking, so I hop in and temp gauge is flashing! Sure enough I'm over heating!!! I pop hood overfill is empty, AC compressor has coolant on it? No leaks from hoses? I don't get it???? I'm stumped, can't be just the battery that caused the overheating right? I know the power steering is because of the batt. Help!