thermostat

[mosnismo]

I bought a thermostat for a 92 240sx 9 months ago. Because of the leak I have with my car water pump, and pipe from manifold. I started using just water in the radiator. 8 months later I fixed the water pump and the pipe. For about a month my car was running fine without overheating. Now my car is overheating again and it is worst than before. I put antifreeze in there now. I bled the cooling system and its still the same. Could the thermostat go bad again? When I turn my heater on sometimes when its running fine the heat comes on but when its hot no heat comes in the blower. thanks for the help

[biggie]

Little clarification would help.

If you did a coolant change and it started after that I would say you didn't get all the air bubbles out.

[mosnismo]

I just change the thermostat because it was overheating. then 1 month later water pump went out on me. Then a pipe that was the source of all the problem started leaking before thermostat and water pump gave out. Hope that clears it.

The car runs rough now. I forgot to mention that. I took the number 4 spark plug and the white thing on the spark plug broke off. I change all but 1 spark plug because there is somthing that is blocking the number 1 spark plug. So when the car idles it is running rough but when i cruise on the street it runs normal. So I don't know what the number 1 spark plug looks like. I don't know if it is a blown head gasket would also be a problem.

[mosnismo]

I just change the thermostat because it was overheating. then 1 month later water pump went out on me. Then a pipe that was the source of all the problem started leaking before thermostat and water pump gave out. Hope that clears it.

The car runs rough now. I forgot to mention that. I took the number 4 spark plug and the white thing on the spark plug broke off. I change all but 1 spark plug because there is somthing that is blocking the number 1 spark plug. So when the car idles it is running rough but when i cruise on the street it runs normal. So I don't know what the number 1 spark plug looks like. I don't know if it is a blown head gasket would also be a problem.

[biggie]

Well if you've been running it and its overheating then yeah its blown HG and/or warped head.