I have a 2003 Olds Alero. It started overheating periodically and loosing a little fluid, so my insisted that it was the waterpump. He changed it and it still got hot I bought a thermostat and radiator cap. Still got hot. It turns out the thermostat was the wrong one, so we got the right one, still hot...I am so frustrated right just need my car back this has been three months ago. So I took it out myself today to see
So I took it out myself today to see ? took what out ,to see what ?
Do the cooling fans work ? Could be the step motor that controls the temp. gauge . How are you determining that the vehicle is overheating ? Gauge on insturment cluster ? GM had bad step motors inside thier insturment cluster's . 2003 to 2006 ! Your best bet , take it to GM dealer .
SOURCE: 2002 oldsmobile alero coolant light and fuel
You must always check the coolant hot, expansion will cause a big change in level, how low was it? top it off hot and then drive a few days and recheck the level, I don't think you have an issue here.
SOURCE: 1995 dodge intrepid overheating problem
I currently am having the same issue. I have traced the issue back to the fans. The fans would not kick on so i let it run to almost overheating temperature, and checked the fans.... nothing was working. I slammed the hood to test a wild hair idea that one of the wires or the fans wasnt getting power. When i slammed the hood, The fans kicked on and the temp. dropped. So now its on to wire chasing.
SOURCE: Where is the radiator cap on 2001 Olds Alero?
if you dont see a radiator cap then the cap for your resevoir tank also serves as your radiator cap, thats where you would put your radiator cleaner and dex-cool in at. it is pressurized just like a normally radiator is with a normal radiator cap on it so dont open it when its hot! the resevoir cap should also have dex-cool stamped on it
SOURCE: 1999 Olds Alero leaking coolant and running rough
in my experience it sounds like a head gasket problem it maybe leaking into the cylinders or could be a small leak from one of the hoses I would do a compression test just to make sure and then pressurize the entire system using radiator and coolant tester if pressure holds then its not a leak as far as the fans go just have the car running when it reaches the middle of the temp gauge it should come one if not you may need to run check on temp sensor or fan switch and fans them selves I would follow repair manual troubleshooting section on heating and cooling haynes or chiltons will do.
SOURCE: Overheating
there is a coolant cap on the overflow bottle check it for seal
i'd just replace it
also if you put the new thermostat in backward the overheating would be significant
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