all kinds of problems

HAHA.. There is a better solution to this than a hand grenade ;) Let me help you.. First off, you should definitely take your car in and have all spark plugs AND wires changed. Have them check the distributor and the cap. This will help your cars performance very much from the sounds of it. If there are continued problems with the shutting off and sputtering, then also replace your fuel filter and have the fuel pressure checked (this may be caused by a faulty fuel pump as well. As for the over-heating, make sure this is not just because you have low coolant level. After you have made sure of that, this problem is most likely the THERMOSTAT and/or WATER PUMP. The thermostat is fairly cheap to replace. Depending on the number of miles, you should have your timing belt AND water pump replaced. They go hand-in-hand. When you do one, you do the other. This could be the problem. You have a big list to go through.. : / but, GOOD LUCK!! I hope this is better than a grenade.. hehe