Engine Coolant-Please help

[NebDb]

Hello. I have read a few messages in regards to problems with the engine coolant. My husband changed the thermostat in our 96 Cavalier, and now, the low coolant light will not go off, it did not do this prior. We have ran the car for several minutes at a time, after adding a 50/50 mixture of water and antifreeze, and after an hour or so, the level is low again, I am assuming there is air in the line?? It seems to be leveling off though now.It is not leaking-and I read a post that said something about drilling an 1/8 hole near the thermostat? And perhaps disconnecting battery overnight, to reset the light? Well, is there anything else that I can try to do to that's less invasive? Neither of us are saavy when it comes to fixing vehicles. I really appreciate your help!

[thecommi]

I would assume you do have air in stuck in the system someware. Drilling a hole in the thermostat houseing and placing a bleeder valve there is an option. some cars come stock with that, Grand am's for example. Usualy the easiest way to purge the air that I found is to drive the car. let it warm up make sure its close to normal opeating temp, and drive it. stay close to home, keep an eye on the temp gauge to make sure it wont overheat, beat on it alittle bit. as the thermostat opens up to allow coolant flow some of the air will be purged. Give that a try. Note... disconnecting the battery on a 96 or newer vehicle does not reset lights anymore, nor can you test alternators that way anymore.

[NebDb]

Thanks, thecommi-I appreciate your input. After I posted my message, I called a local Chev dealer, and the guy told me that often the sensor sticks to the bottom of the tank, so to tap it with a screwdriver to loosen it, and it worked! Thanks again!