94 Sunfire/sunbird that sounds like a lawn mower

[gottabike]

I'm normally a buick guy but i'm helping out my aunt with her car. She's got a 94 sunbird that sounds like a thrashing machine to me. It grinds and sputters extremely loud like a busted motor mount. Now i've looked at them, they seem to be ok. I'm curious though because i think its all tied in to one another with the problems she's got. Its got 93k on it and it was a rental, not in to bad of shape.

1. its noisier than hell.

2. you have to put water/antifreeze in about every week. I'm thinkin a leak at the water pump that was replaced not to long ago. Plus and occasional overheating a little right around that time.

I think she might have let it go hot a little to long and warped something.

3. It idles extremely rough and sounds like its grinding. I've checked the oil and so on. Seems clean, no shavings showing when its drained.

4. When you hit the gas and get it going the car doesnt seem to have any intertia like my big park ave does. I'm thinking all this might tie in somewhere with the flywheel possible for the noise?

Any advice would be appriciated....