Resolved 2gNT cooling fans not kicking on

[rideyamaha287]

hey guys im new 2 this site i need some help with my cooling fans. i swapped the motor for a built one and ever since then ive had overheating problems due to the fans not kicking on. It i tried replacing the relays and i changed the thermostat. (BUT) whenever i unplug the temp. sensor the fans kick on. please if you know of anything let me know.

 

[96TurboGS]

Have you properly burped your coolant system, meaning all air is out of the system? Have you checked the resistance to confirm the sensor isn't showing subzero resistances?

 

[my dreamt dsm]

Bend paper clips into the fan relay pins, does the fans still turn on?

 

[96TurboGS]

The OP stated that when he removed the sensor's harness the fan switched on, so that tells you the relay and the PCM are working fine. Testing with paper clips isn't the best method as you can blow a fuse if you come in contact with the wrong pins.

 

[rideyamaha287]

Have you properly burped your coolant system, meaning all air is out of the system? Have you checked the resistance to confirm the sensor isn't showing subzero resistances?

I was looking in the service manual and it said to take the sensor off the put it in hot water and then check the resistance. Is that correct?

 

[VelocitàPaola]

I was looking in the service manual and it said to take the sensor off the put it in hott water and then check the resistance it that correct..

That's the way to fully check the sensor. I believe 96TurboGS meant to quickly check the sensor to ensure it's not open or shorted. If you check its resistance, you should measure something in the kilo-ohm range.

If that checks out, you may consider removing the sensor and following the steps in the service manual. You will need a multimeter and a thermometer, along with water, ice and a stove to complete these tests.

 

[rideyamaha287]

That's the way to fully check the sensor. I believe 96TurboGS meant to quickly check the sensor to ensure it's not open or shorted. If you check its resistance, you should measure something in the kilo-ohm range.

If that checks out, you may consider removing the sensor and following the steps in the service manual. You will need a multimeter and a thermometer, along with water, ice and a stove to complete these tests.

it was the sensor the fans work now thanks guys