so i just got this car and just got it running to find out the heat doesn't work. i have no idea where to even start. but it needs to work because the winters are cold in pa lol. it doesn't turn on no matter what setting it is on. any ideas?
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heater doesnt work!
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If your blower does not work then you will not get any heat output from the heater core into the cabin. Get to your heater core (inside the car under the dash...there is diy instructions) and feel it to see if it is hot. If yes, then troubleshoot your blower. It might just be the blower resistor that needs replaced.
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After you've checked to make sure your electrical is in order, you may want to see if you're getting warm coolant to the heater core. Next to your Brake booster is where those hoses are, give them a feel and see if coolant is circulating. If not, you may need to add coolant or properly bleed the cooling system.
I also see you removed the AC. That may have some bearing on your problem if the AC system is like the GM systems I've worked on. But since I haven't messed with any on my BMWs, I'll let someone more experienced speak on that.
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OK went and looked at the car I'm parting, then looked at my wiring diagrams. Looked like that wire to the compressor wouldn't have anything to do with the blower motor. So I went to my daily driver and umplugged that wire, my thought was correct, I still have all speeds on my blower.
So you're left with Fuse-Relay-Switch-Resistor-Motor to check. I have a hunch it may be the points in your resistor, if it's not the fuse or relay, but ya never can tell till you poke around.
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That tends to be the general consensus. I would check the fuse, relay and then the switch first, they're easier to get at. Then check the resistor.
There was another thread last month where someone didn't have any speeds and renewing the points brought it back, but that's the first I'd heard of total loss, from the points.
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