Being winter in NY, it is nice to have a good working heater.In my 91 Crx,the fan only works on settings 3 and 4. The fan doesn't work on the 1 & 2 settings.It can't be the motor if it works on 3 & 4. So what could it possibly be?

 

I would think it would be the switch. The actual switch behind the lever you move with you hand must be bad. That would be the first thing i'd check.

 

There's a resistor pack under the dash that handles fan speeds. You blew the first two resistors. 1 goes first b/c you use it more than the rest. Then you start using 2 the most and it goes...

Find the resistor pack and either replace it w/ a new one or fix it by soldering in a new resistor. I've heard you can re-solder the break in the resistor, rather then replace it altogether. -scott

 

Would you happen to know where in the viciniity of the dash this resistor would be.
Thanks for the help guys!!

 

It is mounted on the blower housing under the dash behind the glove box. Do not try to resolder it. You can either get a new one ($30 at dealer) or find one from salvage for less.

 

That's funny for a while now my 1, 2, & 4 speed work fine but when I hit speed 3 the heater stops, then resumes on 4, so I must have a similar problem with mine.