The computer decides to run the fans off of the signal from the engine coolant temp (ect) sensor and the air conditioning pressure. The ect is the two wire sensor nearest to the upper rad hose on the engine.
Hello (: I have a 2004 dodge stratus and its fans aren't turning on when their supposed to, but when they do they won't turn off and the sensor isn't detecting the temp, what could be the problem ...?
Take it to a mechanic and get them to check it, seems like a problem that we can't fix with words...
Cooling fans are controlled by the computer based on input from temperature sensor. After the vehicle is shut down, if the temperature is still high, the computer will turn on the fans to cool the engine.
A temp sensor
Yes
You have a 2 speed fan. If it is running on high then your cooling system is hotter than it should be.
It doesn't use a fan clutch. It has electric cooling fans.
The cooling fans are controlled by the engine computer. It watches the coolant temp sensor, which is near the thermostat, to decide when to run the fans. Yhe computer acuates a realy to turn the fans on.
Do they work when you turn the A/C or Defroster on? If so it could be temperature sensor If not it could be fuse
Could be a bad fuse Could be a bad temp sensor Could be a bad relay
this could be caused by a fautly cooling temp sensor, sending a false reading to the cooling fan relay, causing the fan to continue running, also, could be caused by a faulty relay, I would rerplace both.
hi, fans will work when power is jumped direct to fan wiring, . but not with relays or sensors, replaced relay number one but still not working as factory set up. is sensor on radiator a coolant level sensor or fan sensor to trigger relays