No Heat!

[cxh10]

I recently fixed up my heater but now the darn blower has gone out. It would quit working periodically last year for like a couple days or a week at a time and then would magically start working perfectly again. Both speeds always worked. It would just either not function at all or it would work perfectly. Anyways, it has quit working entirely again and it's been over a month. Looks like it's time to fix the problem before my girlfriend freezes to death haha. I know the switch is discontinued by toyota so does anyone know which years an 82' is compatible with? Mine has a picture of a fan blade on it as opposed to the one's that say "fan pull". I've located some of the latter ones and wasn't sure if they'd be compatable or not. I'm no expert but I figured the switch would be the quickest and cheapest thing to try first (already checked the fuses) unless someone who has experience this problem has some advice for me. Thanks!

 

[poose]

I pulled all of the switches heater etc from my 78 I will look for it if you want them.

 

[65swb45]

Best case scenario: the knob on your switch might be interchangeable with the one on an older switch, which are cheap and plentiful [e.g.$10 at Mark's Off Road].

Get a pic of the plug on the backside of the switch and we can go from there.

Best

Mark A.

 

[cxh10]

I'm betting a 78' is new enough to be compatible. So that'd be great if you could find that. I'll try and get a pic up soon of the back of the switch.

 

[Vicm]

Unless you run some tests to see what the problem is, it is only a guessing game that might go to overtime.

 

[igotta40]

Exactly.

When you pull the switch knob, does your amp gauge needle move? If so, switch is fine. Try a couple drops of 3 in 1 or sewing machine oil on the blower motor shaft.

If the amp gauge needle doesn't move, clean the contacts in the switch and make sure it's properly grounded. A test light is your friend.

 

[3DAMAN!]

Check to make sure the wires attached to the blower resister are still connected and solid,{not broken}

 

[cxh10]

I just realized I never posted a resolution to this problem. Well I feel like a moron. I went to the trouble of replacing the entire blower motor only to find out that it was in fact the fuse. I had replaced the fuse even though it looked fine and it didn't fix the problem. After replacing the motor and it still not working. I examined everything closely again for an hour or more. Finally realized that corrosion had built up on the fuse box. I sanded the metal clips that hold the fuses and that was the end of the problem.

 

[65swb45]

I just realized I never posted a resolution to this problem. Well I feel like a moron. I went to the trouble of replacing the entire blower motor only to find out that it was in fact the fuse. I had replaced the fuse even though it looked fine and it didn't fix the problem. After replacing the motor and it still not working. I examined everything closely again for an hour or more. Finally realized that corrosion had built up on the fuse box. I sanded the metal clips that hold the fuses and that was the end of the problem.

Hopefully you will be vigilant in helping the next guy diagnose this before he makes the same mistake. THAT is the MUD legacy!