[MargaretKelley]

I'm pretty sure I need to replace the rear air blower motor, but wanted to double check first.

Have a 2008 EX-L with 188k miles that I bought last summer. Noticed a month or so ago that the backseat doesn't get air. I replaced the transistor and now if I turn the fans ALL the way up, you can get a trickle of air in the backseat, like what comes out of the front vent on the lowest fan setting. I cleaned off the (filthy) air filter when I replaced the transistor. I checked on the rear blower motor and noticed that it does vibrate when the air is on and vibrates more when I turn the fans up to max, but again, back seat isn't getting the airflow I'd expect.

This sounds like a rear blower motor issue, right? Or should I troubleshoot some other area first?

 

[ImBroke]

Maybe a dumb question, but did you vacuum the screen over the motor? Driver side.

 

[MargaretKelley]

Yup, vacuumed then wiped off the screen with a damp microfiber rag to remove all the stubborn dust. It's as clean as a whistle right now.

 

[ckev70]

Service Manual

From: 21-129. Based on this, if you can provide 12 to the proper connector, then this will determine if the blower motor functions or not.

 

[plplplpl]

Can we assume you've gone through all this?

Also, make sure your thermistor legs a well-insulated, Note the red rubber insulation around the replacement's legs. You don't want any shorts/unwanted contacts.

 

[MargaretKelley]

I will admit that I can't find the multimeter to test the new transistor nor have I disassembled the transistor, but I did follow those steps to replace it with a new one.