Hey guys, in an effort to find out why my car doesn't run right/idle while cold, i checked the resistance on the coolant temperature sensor.
Key-on, when cold: 635 ohms
no key on, cold: 1350 ohms
And the weird thing is, the resistance rises as the temperature rises. I read the FSM, and the resistance is suppose to fall as the temperature rises. The temperature outside is about 40 degrees. Can the sensor actually go bad and make the resistance start low and rise? Or is this an ecu problem?
![Image]()
Also, i put a 150 ohm resistor in the coolant temp sensor plug to see if the fans would come on, and they don't. My fans do not come on at all. I bled the coolant system of air, also.
Key-on, when cold: 635 ohms
no key on, cold: 1350 ohms
And the weird thing is, the resistance rises as the temperature rises. I read the FSM, and the resistance is suppose to fall as the temperature rises. The temperature outside is about 40 degrees. Can the sensor actually go bad and make the resistance start low and rise? Or is this an ecu problem?
Also, i put a 150 ohm resistor in the coolant temp sensor plug to see if the fans would come on, and they don't. My fans do not come on at all. I bled the coolant system of air, also.
