the float in the expansion tank isn't floating or getting stuck giving false reading of water level low
if u changed thermostat it has to be reset so fan can turn on correctly
lOW COOLANT OR BAD SENSOR
Low coolant?Bad sensor?
Bad sensor? == ==
Low coolant? Bad sensor?
If it is the low coolant light, it may mean your coolant is low. If it is not low, it may be the low coolant light sensor malfunctioning.
I'm having to guess it's the low coolant light? Possible coolant switch in the overflow bottle is dirty or defective., Is it low on coolant? Possible wiring issue to sensor.
why does the coolent light stay on in my 2000 mustang gt 4.8
Check your coolant sensor for built up sludge, or the sensor may need replacement.
bad coolant level sensor in either side or bottom of plasit coolant resivoir,
Assuming your coolant level isn't actually low, it's most likely a bad sensor
You are low on coolant or the low coolant sensor/wiring/connection is bad.