I just replaced the final stage blower motor resistor in my car because the fan for my ac and heat quit working. The resistor for this motor that I replaced, which is shown in the picture attached below, looks extremely weird. I have never seen a resistor like this of any kind.

So my question is how does this work? Are the long metal rods extending out from the main body of the device just some sort of heat sink, or what? I am just curious about how this works, since there is no current flowing through those long rods.

Can someone explain to me why this resistor looks like this, and how it functions? My guess is there are several high powered resistors inside the black body and the long metal rods act as a heat sink to dissipate the heat from these high powered resistors...?

Thanks,
Michael Walden

edit: I attached the images instead of embedding them.

 

You took the whole dashboard out? I feel your pain.

I have replaced heater cores on a few vehicles. Massive job!

Looks like an heatsink to me.

 

You took the whole dashboard out? I feel your pain.

I have replaced heater cores on a few vehicles. Massive job!

Looks like an heatsink to me.

Well I took the glove compartment out, and I was able to reach in a barely squeeze it out. It was still a pain in the ass and took me a few hours. Everything was so tight.

Yeah I figured it was probably a heat sink. But it was $125 for that one part. I need to hurry up and fix everything on my car so I can sell it. It is at that point to where everytime I fix something, something else breaks. Time to sell now.

But I don't want to sell until I fix at least most of the stuff. Nothing major wrong with it anymore, just a bunch of little things.

Thanks for the reply.

-Michael Walden

 

Cars are great to work on. I've had a blast with them. Bolt on an rebuilt turbocharger, drop the gearbox and do the clutch. Install an state-of-the-art entertainment system. Turn up the tunes slam down a dozen beers and go for an 100 mile strap. Sweet as.

Don't get done by the Police and lose your license like me though.
Don't worry about jail though unless you're a peadophile. Go to jail and have a long nap.

 

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