It is within the water outlet which is at the bottom of the top radiator hose. Mark
If you don't know how to do this then you don't have the right equipment to do it safely.
If the thermostat is stuck open, the engine will never warm up to proper temperature.
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It is a defective fuel sending unit. I know, I just replaced it on my car. You have to drop the gas tank to replace it.
WE DON'T KNOW!
When you lock the doors, there will be a small red light on the dash that flashes to tell you the alarm is arming.
If you do not know how to replace it, then you should not try to replace it. If you want to know WHERE it is, then look near the thermostat housing.
Need to know which engine you have.
start the car and let it idle while the car is running unplug the mass airflow sensor if the idle does not change then the sensor is probably bad if the idle does change or the engine dies out then it is working so leave it alone cause they arent cheap. A Chrysler Cirrus does not use a maf.
Follow hose from radiator to engine. The hose at top of radiator near coolant reservoir tank. Where it connects to engine is where the thermostat is. There are two screws. Stripped mine. You know its the thermestat because the hose going there stays hard after running engine for a while, and you would be able to squeeze it if the thermostat opened up.
For the cost of a new one, if you suspect it might be bad just replace it.
all i know is that it is in the bottom rad hose