More Electrical Gremlins

[tbrend]

I have been having electrical issues lately. Probably time for a upgraded wire harness.

The new one is my heater motor.

I did the chevy upgrade a couple years ago. Everything has been working fine until the other day. I turned the switch and nothing happened. It is starting to get warm and I am going to drive it to work, so I need the heat in the morning.

I pulled the heater motor and put the voltmeter on the hot wire. I got a about 12 volts on both high and low. So I don't think it is the power. Although, I did hook the old motor up and it wouldn't go either. The wire is hot and everything is grounded. Any suggestions?


Thanks

 

[Skiddy]

Sounds like your motor has died

 

[tbrend]

I even tried the old motor that worked when I pulled it out.

I suppose I will grab a new motor and try it.

 

[Skiddy]

So if you checked the wires coming from the switch and they were hot, it has to be the motor or not grounded.

 

[Kidney]

I vote for a bad ground. I had the same issue earlier in the year. I did a number of things, so I can't say exactly what fixed it. I made a new ground cable, cleaned up the ends of the bolts that go into the fire wall and pulled the fuse box to clean up the blades. After a lot of fussing and new spade connectors I finally got it going.

 

[RRRAAAYYY2]

You may have 12volts but how much amperage? If you have 12volts and and it doesnt drop at all when you turn the switch on you have either a bad ground or a bad motor. Run a jumper cable to a known good ground. Still dont work, try a new motor.

 

[deltarat]

Hook the motor up to a battery charger and you can tell if it is the motor or not.

 

[tbrend]

It turns out I actually had a gremlin.

The ground was the original ground that was mounted up underneath the cowl. A little mouse had made his house up there in the insulation and he likes to eat wires. I regrounded it and it works fine.

I wonder what else will show up?