[RESOLVED] fan not working

[saleener94]

anyone know why my fans are not working? there is a manual switch that runs to the battery and when on, it works fine. I never use that switch but I want to know why my fans dont turn when hot. I was overheating as soon as I pulled up the driveway. I switched relays around and still same result any ideas?

 

[MLutin]

your fans seem to be hardwired to your battery and skipping all sensors like your thermostat. I would check vfaq and rewire.

 

[5150DSM]

Agree with Mlutin. Fans are hardwired, thereby bypassing the relay. Talk to the previous owner to see if there is a reason for the hardwire or just follow the diagram and remove the switch.

 

[saleener94]

The guy sold it to me for that reason and installed that manual switch. I know he also replaced the ECT sensor. After I took the car it would run fine and has since nov 07. this is the first time it overheats and also its the first time I drove with A/C at about 100 degrees outside.

 

[saleener94]

Hey guys I already changed the coolant temp sensor at it still overheats. I was looking at the wires out of the driver side connector and there is a blue and white wire that appears to be cut but there is nothing on the other end. th 3 other wires go up to ecu. where does this wire go and is it important?might this be my problem?

 

[Silver99GSX]

no fried wires?

 

[saleener94]

how can you tell if they are fried?

 

[Calan]

They will be black in spots with burnt insulation and look fried.

 

[saleener94]

no not fried any ideas on that blue and white wire?

 

[saleener94]

ok guys. problem solved. The things that are said to cause rad fan to not work are coolant temp sensor, relay,fuse and wiring. after checking all I took off some old tape off the wiring and discovered some light blue corrosion like the battery post tend to grow. I cleaned it with a brush retaped it turned it on and couple minutes later fans came on. keep in mind when they were not working I would hear noises and clicks as if they were about to go on. Blue and white wire i guess its not used, i dont know. Anyways thanks everone.