Aloha all, seems both my fans don't turn on any more on my 2000 Accord EX. I can drive around town and sit at a stop light for 2-3 minutes before the temperature starts to rise, so I've been putting off fixing it (stupid, I know )

In any case, I've tried swapping the relays in the engine compartment (basically, took all 3 fan relays and plugged them into the horn relay, and honked the horn to test). Turning on the A/C doesn't engage the A/C fan either, so now I'm looking to test the fans themselves.

The actual question is - can I just run 2 wires from the fan plugs straight to the battery to test, or is this a bad idea? All my previous vehicles had the fan attached to the motor, so I don't want to take the chance of making something worse

If the fans do indeed work, where else should I check? I don't have any blown fuses either.

Mahalo!

 

The fan brushes or commutators are likely worn out.

If you use a jumper wire you should use a fused jumper in the event the windings in the fan motor are shorted. Wouldn't be the end of the world, just a good practise.

 

So basically, I can just run 2 wires from the fan to the battery (fused for protection) to test them?

How big of a fuse should I use?

And thanks

 

Just run two wires from the fan to the battery. That would complete the circuit.

Well, I'd say 20 amps would be appropriate for most circuit testing.

Keep in mind I have seen motors fail by short circuit within the windings which would obviously be a faulty fan motor but would also most likely cause the fuse to fail. So, if you find that the motor doesn't turn when directly powered, keep in mind that if the motor has a short circuit, the fuse for the fans could be blown.

 

Just read you don't have blown fuses. That's good.

 

awesome, will give it a whirl tomorrow and see what happens.

Mahalo!