Hi, I was really hoping I could get some help on hopefully diagnosing my car. Here's the story...I recently bought a 92 Mercury Sable from my grandmother that had been sitting in her driveway for about a year. The car has previously had the waterpump replaced. When I got the car we immediately got an oil change. For about 2 weeks I had heat in the car but it took a long time to heat up. The needle showed the appropriate tempature. Then all of a sudden I had no heat. I know nothing about cars, so unfortuantley I waited about a week and half before we put antifreeze in the cold fill section. After that the car had heat for about 2 days. Then, out of nowhere the car did not start. We had a stranger try to jump the car with a portable jumper? It didn't work so my fiance tried to start it again and it worked but then we noticed there was no heat coming out. The next day we replaced the thermostate. The car still took some work to start needing gas at the time of ignition and then there was a huge amount of exhaust. We took it the next day and got a power flush and the technition said there were air bubbles they had to work out, but it was looking good. When I went to leave the shop the car did not start and they jumped it. When I left I still had no heat, but the temp gage was not good but okay and I still had a HUGE amount of exhaust. I let the car run for about 45 minutes the next day and as I pulled out of the drive the car died again, but restarted. The exhaust is still huge and smells like antifreeze. I know this is a lot of information, but any help would be greatly appreciated.