Overheating problems does my 1996 chev cavalier 2.4 call for a thermostat...doesnt have one so i replaced it and it leaks..it overheats and i just keep adding coolant and it doesnt seem to get better i cant find any leaks except for the thermastat n gasket that i replaced..i cant figure it out...i do loose water but i dont know from where. i can hear it boiling throught out moter when it does overheat HELP ME PLEASE THANK YOU DAWN

sounds like the radiator is blocked either coolant flow or ext air flow through the matrix the thermostat can get ruined when the system overheats so allways change the stat after a overheat problem GET THE RAD CHECKED FIRST if ok check the coolant pump

If you don't have any noticeable coolant leaks, you might want to check the fan or fans if you have 2, start car and when it starts to overheat check to see if the fan is working. good Luck.

That is normal. If you want it to run cooler, then change to a cooler thermostat.
If you have a problem, still, check out this walk through for a diagnosis of overheating engines.

I am having the same problem. I have read that only a GM thermostat may work aftermarket thermostats dont work in some cases. If the top radiator hose is hot and the bottom is is dramatically cooler, then more than likely, the thermostate is not opening. The other part I dont know yet is how to purge the system of air. Trying to find that out now. Good luck.

Bad injectors causing the vehicle to run poorly can cause other damages to sensors etc. Buy a code reader and check the codes.

Overheating can be a mystery-but I find that most of this problem is putting in the thermostat backwards, and/or not getting all the air out of hoses(upper and lower)-posible that water pump is shot, and or fan belt that drves pump is no good(unless driven by timing belt)-flush radiator to make sure that isn't clogged up...

REPLACE THE THERMOSTAT

check your fuses on your fan.the fuses are located on the drivers side of the dash you will need to open the door for you to access them. if there is a blown fuse replace it and see if this fixes your problem. if it does and you are still over heating turn the heat on full blast and see if the temp goes down if so than you need to replace the thermostat. if there are no fuses blown than you need to check the plug on the fan unit to make sure it has not come disconnected.

if ur antifreeze keeps showing low or none , there is a leak in the system. check for leaks in the radiator or in the colling systems piping.

The first thing to check after the thermostat is if the radiator cooling fan is still functioning.