Some cars have ground wires connected on the Thermostat housing bolts & the wires break. SOME aftermarket Thermostats (EL CHEEPO'S) are total JUNK.NAME Brands are best 2 go with.HOPEFULLY (IT) is installed correctly-SOME U have a 50/50 chance -The thremo Bulb goes away from the radiator .
Check the temperature sender. not the sensor, the sender. the sender goes from the thermostat to the computer. They have been know to prevent vehicles from running. I second that.
check the fan clutch
The typical signs for a blown head gasket is white exhaust coming from the tailpipe, gradual coolant loss, rough idle, temp gauge may fluctuate a bit while driving.
Has the rad ever been flushed? Try that if there is no indication of water pump failure (leaking or venting coolant from pump.)
if your thermostat was bad your engine will over heat but it has nothing to do with the fan,fans are driven by a diffrent mechanism. try checking your thermostatic switch/ heat sensitive switch or sensor, located somewhere in the cooling system(radiator,engine block or thermostat housing) which is the one that tells the fan when to come on.(only electric fans)it may be faulty wiring
Check into the temperature control valve--this is different than the thermostat.
Is you Geo Tracker overheating or the temperature is running almost hot then you need to change you thermostat
either your low on anti-freeze or the thermostat is broken. i just changed my thermostat today and i cost $11 so it won't hurt to get it replaced even if your not sure its broken.
Thermostat probably needs to be replaced.
When the thermostat and radiator were replaced, coolant could have dripped into an electrical connector or a sensor could be disconnected or damaged. Check the temperature sensor and crankshaft sensors first.
If your engine takes a much longer time for the thermostat heat guage to reach its required level of operatiing temperature then the thermostat may be stuck in the open position which means that it will need to be replaced.
Be careful there is a temperature coolant switch mounted next to the thermostat housing. I thought this was the sensor and replaced it by mistake. There is another sensor.
The thermostat is done it has to be replaced.......
If the car is overheating or if the temperature gauge is not coming up to normal operating temperature which is normally half way up the gauge then the thermostat needs replacing. As the water pump should be replaced at the same time as the cam belt every 90,000 miles, you should also replace the thermostat and coolant.If the car is overheating or if the temperature gauge is not coming up to normal operating temperature which is normally half way up the gauge then the thermostat needs replacing. As the water pump should be replaced at the same time as the cam belt every 90,000 miles, you should also replace the thermostat and coolant.
There is an engine temperature sensor that operates the cooling fan.
You need to check coolant temperature sensor and the water pump.
The thermostat or the fan relay for the radiator fan. If the temperature gauge shows the engine to be hot the fan should be on. If the fan isn't on you can check it by removing the electrical connection to the temperature sensor. If the fan is all right it will come on by default when the wiring connector is removed. Usually it is the thermostat which needs to be replaced when the engine is overheating. If the top hose going to the radiator isn't hot when the temperature gauge shows the engine to be hot the thermostat is stuck shut and should be replaced.