Is there supposed to be a thermostat in a 1999 Chevy Malibu?
yes, otherwise the engine will run too cool and you will get horrible gas mileage
When they change the engine on your 1999 Chevy Malibu a month ago and now it overheats what is the problem?
On the Malibu the Thermostat should be if I'm not mistaken Somewhere near the Manifold it looks like a copper colored spark plug it's thin and you should be able to remove it by using a small open ended wrench after you remove the sensor wire. Um, no. That is an oxygen sensor. The thermostat is located on the driver's side of the engine, underneath the airbox intake and throttle body. Follow the hose that…