Blower- 70 GT

[OPELFIEND]

All of a sudden, the blower fan quit. Fuse appeared OK, changed it anyway, still no fan. Any thoughts on this? Worked fine the other day. It just went.

[jerseyopel]

Mine did the same thing. Took it apart and pulled the mouse nest out and it worked fine.

[benncojr]

Check the wiring. Over time the wires that give the blower power to run will friy and break.

[OPELFIEND]

I found on these threads that earlier models have wires going to the blower that aren't that easy to get to. I don't see any wires under there, so do I have to pull the motor out to get to them?.

[Turbo X]

first off use a volt meter and test the wire going to the fan switch, and then from the switch to the fan, if you have power from the switch ,the fan or wire is bad, and need to be removed for further testing or repair.. since you have it a part i would take the heater core and have it tested at a radiator shop and flushed or just replace it with a new one.
take care of it now I am sure its never been touched.

there is nothing like doing something twice, especially when it a son of a bitch to do in the first place.

[Sparky73]

My first guess would be some type of nest. But that all depends on how often you drive the car. If your car is actually a driver, rule out a mouse nest. My next guess would be a ground. You don't have to test the wires right at the blower. Just get a wiring diagram and follow them back towards the fuse block.. a lot easier access.

[OPELFIEND]

Yes, I drive the car often. The thing has worked fine on both speeds since I've owned it, hasn't been making any funny noises or anything. Just quit working with no warning. Fuses are fine. 30 degrees this morning, kind of needed that defrost. Have warm air coming in, just no blower.

[ungermm]

You probably have a heater/blower with the wires connected to the resister posts at the top of the unit which are not accessible from underneath the dash. I'm not sure, but you might be able to locate the ground wire from underneath at the left bottom area. I would recheck and clean the ends of your fuse first.

[OPELFIEND]

So, the fuse is fine (cigarette lighter works), don't see any thing loose at the fuse box. The problem seems to be electrical however. This being a 70 model, do I have to pull the dash pad to see if everything is in working order electrical wise on the heater fan?

[ungermm]

Pulling out the dash isn't a very quick and easy task. IF you don't mind cutting into your glove box, I think you would be able to access the posts where your heater wires attach by cutting into the forward right side of the glove box area. The posts are behind a metal bracket that attaches to the frame. If you cut a 3 sided flap of about 2 inches on each side, you can pull the flap back, test for power at the posts and the functionality of the blower, and then push the flap back when done. It shouldn't be noticeable when you push the flap back. I've never done this...just a suggestion, if you want to try. I have a dash in place over the heater/blower unit to verify that the posts are in this area. On my 72 GT's the posts on on the bottom of the heater/blower unit and are visible from under the dash.
Jerry

[thescifiguy]

You might just have a dead spot in the blower motor or a tough leaf stuck in it.

I had that happen years ago on a '70 GT. I drilled a 1/4" hole into the heater box protrusion in the engine compartment(about 2-3" from the edges of the box). I used a screwdriver to poke down 1-2" into the fan blades and gave them a spin. Blower fixed! The problem reoccurred a couple of times during the next 15 years - my screw driver hole came in real handy.

You might try thumping the surrounding vicinity of the blower with a rubber mallet. That's an old trick for unsticking starter motors, electric fuel pumps, muffin fans, etc.