Dukenukemx

I'm trying to figure out why my AC isn't as cold as it used to be and I see that only the drivers side fan turns on, but the passenger never turns on. I ran wires from the battery and tested the passenger fan and it does work. I jumped the #2 relay to see if that turns it on, which it does. But the relay does click when the drivers side fan goes on. What could be the problem? Anyone have a digram of how these fan relays work?

BTW 2001 Lexus RX300 AWD.

Dukenukemx

Ok I figured out the problem. There was a missing 40a Female Maxi fuse that I bought and put it in and now both fans turn on. Bought this RX300 used so go figure why someone would remove it and not replace it.

salimshah

I hope not, but in few days you may find out why.

Salim

Dukenukemx

Wait, why is it bad that I put in a fuse where one should be?

owenstrawn

It may have been removed to hide a problem. Hopefully not.

salimshah

You did absolutely the right thing [hopefully used the specified Amp fuse].

Fuses are pretty robust and the manufacturer chooses them with plenty of thought process. When a fuse pops, it can be attributed to 'one off' or mostly due to human error and at times due to component going bad. Then there are reasons to remove/disable fuse to eliminate the load.

I am hoping that it was 'one off' for you. The caution was for the other cases.

Salim

Dukenukemx

Drove it upstate NY and back which was like a 6 hours total drive and nothing happened so far.