You have a bad heater core the heater core is a small radiator type unit under the dash of your car that sends hot water from the cooling system runs through a fan blows on it and warm air comes out. It is in the cab under the dash and it is leaking that why you smell "hot water" You need a experienced mechanic or get a book Chiltons if you what to fix it yourself
If your radiator isnt leaking and car is having a over heating problem and coolant spewing out. Chances are your thermostat needs replaced. possible the radiator needs to be flushed. But more likley its thermostat
Bad thermostat maybe?
Either: 1) Thermostat is bad or 2) Radiator is clogged or 3) if your losing fluid or hearing a noise, check your water pump. If your not losing fluid or hearing a noise, the service the radiator by having it flushed. If this doesn't solve your problem, then change the thermostat. If your still having the problem then your radiator may need further service or even replacing. I'm having the same issue right now. I'm replacing my thermostat next. If it still is running hot, I'm going to take the radiator out and have it serviced. Good luck! And remember, DONT let the temperature get in the red!!
Have your radiator tested at a radiator shop, replace the thermostat, and if it was mine I would replace the water pump also. If fluid is leaking from under the front snout of the water pump, it needs replaced. If there is either white slurry in your oil or excess gas and black oil floating on top of your coolant, you may have a head gasket or cracked head causing the overheating. In most cases having the radiator cleaned/tested and a new thermostat should fix the problem.
I have a 1999 blazer. The heater core clogs up about once a year from the Dexcool. Try having it (heater core) flushed and use Prestone (Extended life) instead of Texaco.
You need to replace the thermostat and flush the system of crud.
Oil can do that. Check your head gasket. also check thermostat to make sure its opening. intake leaks can cause this. mixing different types of coolant...using stop leaks...not having cooling system flushed reguraly can all cause these symptoms as well as head gaskets.
Bottom of the engine where the lower radiator hose connects. Besides having to lay on the floor, it is easy to replace.
I was having the same problem with my car. When you take the thermostat out it will automatically read cool. But I later found out that I had a leak in my radiator and had to replace it. Turned out that my heads are warped and was leaking oil into my water and into the radiator itself. Once i replaced the radiator its been fine.
All you should need to do is follow the upper radiator hose back to the motor, Un-screw the bolts at the engine, lift and you will find the thermostat. If it has a rubber gaskit you should be able to reuse it.AnotherDon't reuse gaskets. They're a $1 part and over time they do become dried out. It's not worth having to dismantle the thermostat housing again when your gasket becomes completely shot. Do the job right the first time! Dawn
If you haven't done this, I would try a new Thermostat first I had the same problem and it was a clogged heater core , Try having it flushed out
Find and disconnect the upper radiator hose. This will be a hose going from the top of the radiator to the top of the engine block somewhere. The upper radiator hose attaches to the thermostat housing, which is usually secured by 2 or 4 bolts. The thermostat is inside and you will probably need a pick to get it out. Having said that, your thermostat probably isn't the problem if you are overheating. GM motors have really bad intake gasket design, which can cause your car to leak coolant, which will in turn cause it to overheat.