Few weeks ago, the blower motor stopped working one night in my IROC. It was WAY too cold to not have heat, but I was only a few minutes from the house when it happened. Came back out of the store, and it was working again...okay.


Fast forward a few more days, it does it again. Except this time it never starts working again. So I go through the normal procedures...

- Checked the fuse. It's fine. Circuit is not loose.
- Checked all the voltages at the resistor pack, and all those were fine.
- Ran power straight to the fan motor, it worked fine.


I ended up replacing the relay, mainly because it was in pretty sorry shape, and the connector on the relay itself was damaged.

No change. Okay, so no loss, I was leaning towards the fan switch in the car anway.

So $10 or so and 10 minutes later, I replaced the fan switch. All was well, fan has been working fine ever since.


Then this morning, went out and started the car so it would warm up. When my son and I got in the car to leave, I realized the fan motor wasn't working. After a few minutes, it just started working.


So on the way to work I pulled over at a friend's shop and started looking around under the hood.

Seems the ground on the rear of the pass side cylinder head looks pretty beat up. There's also a "mystery" wire, that appears to have once been connected to this ground point as well. Everything in the car has worked fine...so maybe this is causing an intermittent thing with the fan motor.


It's still working. So tomorrow morning, I'll go ahead and re run the main ground, clean the contact, as well as splice in a new ground for the broken wire. I've been meaning to wrestle with the one remaining AIR hard line that's mounted back there anyway, since I removed the AIR system awhile back.

Any easy tips before I just try my patience and use a wrench on that nut on the back of the cylinder head? I've messed with these before, and for the life of me can't find the torched / hacked / bent old dist wrench I used to make these much less painful.

So hopefully, this is causing the intermittent fan trouble. If not, I'll throw a fan motor in it for kicks...since I get a good guy price from a buddy, it will only cost $15 or so. Mine is kind of loud anyway