Timelord217

So this just started happening, yesterday everything was fine, and after going on a quick 10 minute trip, I come back home, turn off the ignition, my blower turns off, but a few seconds later, it kicks back on. Does anyone have any ideas on what the problem might be? For the moment I have my battery disconnected. It's not a huge issue for now, but a really annoying one I'd like to get fixed very soon. Thanks!

Sig220

Are you talking about the engine cooling fan or the AC/Heater blower?

Timelord217

Sorry for not being clear, I was talking about my AC/Heater blower

boxburn

Does it still stay running with it selected to OFF? If so it sounds like there could be a few issues going on here.

The motor gets power through a relay which should be off with the ignition off. The motor then grounds through the mode selection switch.

If it turns on with both the ignition off and the mode selection off, it is getting both a power feed and a ground when it shouldn't be.

Buddence Limbeck

Same issue, AC Blower motor is on after car is off regardless of whether the AC control is on, off or, auto. I pulled 40Amp cb under hood, but car won't start with that pulled. Was considering running q wire with a switch to it as a temp fix and kill switch. Any ideas what it is thats causing it though? Resistor? Control gone bad? Thanks!

Timelord217

Yeah, found out the pigtail harness for the blower motor relay (not resistor) had melted and also had to replace the relay as well. I'd check that.