1997 Other Saturn Models Catalytic Converter

Hi,

My Saturn is an SC2. It has serious issues and has cost me $ 1000 in repairs in the last 3 weeks (all cooling system related).

My car has been burning huge quantities of oil
for a very long time. I take into a shop and they say "it's a Saturn". That's all fine and well but now there is blue/black smoke billowing from the tail pipe. It is hesitating when I try to give it gas, almost as though it I is deciding whether or not it wants to accept the fuel. And now the dreaded "Service Engine Soon" light has come on and is staying on.

The car really is not worth the cost of anymore repairs but I cannot get another car any time soon.

My question is, if I do nothing, how much time or how many miles do you think I might have before it just blows up? Are there any qucick /temporary fixes that don't cost $$$$$$? Do I need to worry about any safety issues other tahn the car dying/stalling out while I'm driving it?

Please help. I'm afraid to drive it to work in the morning ( a 5 minute drive down a major highway).