A/C Heat Fan Speed Problem

[Count]

I'm a noob here, but you guys have a great site. This actuall concerns my 1991 Toyota Motorhome. It's actually just a Toyota Dually Chassis, so it's essentially just a pick-up.

The A/C-Heat fan only works on high speed, not the lower speeds. I plugged a new fan motor in and it made no difference. I removed the fan speed switch, opened it, and cleaned all contact points. Everything in the switch looked brand new. I hate to buy a new switch when I don't think thats the problem.

What else could it be? All advice is appreciated.

 

[CJF]

http://www.4crawler.com/4x4/CheapTricks/Blower.shtml#BlowerResistor

 

[WristPin]

CJF beat me to it.
its a simple fix.
the resistor. read the link.

 

[Count]

Thanks guys! I'll order the resistor, should be here in 2 days. The link wasn't really clear on whether I need to remove the blower motor or not ( I hope not, as I just re-installed it last night.)

Thanks again!

 

[John Smith]

No need to remove the fan. A single phillips head screw holds the resister in.

 

[2ndGenToyotaFan]

Did you make sure it was a 4 speed resister? Because there are 3 and 4 speed fans out there. Yours is probably a 4 if it's a 91.

 

[Count]

Did you make sure it was a 4 speed resister? Because there are 3 and 4 speed fans out there. Yours is probably a 4 if it's a 91.

I had the dealer look up the part off of the VIN so I'm assuming it's the 4-speed resistor. I'll check when I pick up the part today.

Thanks again for the help, I'll let you guys know when I get it installed.

 

[2ndGenToyotaFan]

If it's a 4 speed I think there should be 3 coiled resisters sticking out of it. If it's a 3 there will be only 2. Going from fuzzy memory.

 

[Count]

I installed it tonight and the fan works perfectly on all speeds. Thanks!!!

 

[CJF]

Tada!!

Hey, how about some pic's of your motorhome?

Curtis

 

[Count]

Once I get it cleaned up a little I'll try to post some pics.

Thanks again!