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Re: Bad Blower Fan
If the fan is noisy and you're smelling burning stuff, you should replace the fan. might as well replace the resistor and capacitor if it has one while you're in their. it's not a place or position you'll want to spend much time in.
temp control issue is probably unrelated, unless heater core is toast and leaked into fan box.
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RR/HVAC fuse 30amp located in the under hood fuse box. You can check it but highly doubt it's the problem . More then like it's the blower motor control module that's bad .
The auxiliary blower motor is a variable speed fan. The HVAC control module controls the fan speed by sending a pulse width modulated signal to the auxiliary blower motor control module. The auxiliary blower motor control module varies the duty cycle across the auxiliary blower motor in relation to the pulse width modulated signal. The auxiliary blower motor speed can be adjusted from 10 percent to 90 percent duty cycle (PWM), 90 percent is high speed fan.
Watch this video for testing purpose's only , this is a front blower motor control module . Same way your back one works . GM is GM Chevy , Buick ,GMC , Cadillac .
Your Blower Control Module/ Blower resistor is probably bad. It controls fan speeds. The blower motor itself could be bad, I doubt it unless it was making noise previously. The blower resistor is under the passenger side dash.
You will need to do some checks .. First remove glove box. Then you can gain access to the blower motor. You will need a voltmeter or test lamp. Disconnect the plug to the blower motor. With the blower control turned to on check for voltage 12 volts, on one wire. The other should be less than a volt which is your ground. If so the motor is bad. If not then it will require more time and testing. If you want to try the "tap" method try tapping the blower motor with the wires still hooked up if it starts then blower motor is bad
The rotary control switch on the dash controls the blower motor for the A/C. The A/C will not turn on unless the blower motor is functioning properly. The passenger-side radiator fan will not turn on until the A/C begins running. BUT the driver's side radiator fan should always work. Ergo, check the function of the blower motor (located underneath the dash behind the glove box). Usually when it goes bad, it's because of the blower motor RESISTOR (mounted inside the blower motor housing). When the resistor goes bad, the blower motor shorts out, causing it to fail. The switch rarely ever fails. The radiator fan relays are located next to & on both ends of the radiator. Check them too. In the link, the blower motor RESISTOR is #5. Acura Parts AcuraOEMparts com Genuine Acura OEM Parts from Delray Acura
it could be a bad blower motor resister that controls fan speed depending on what fan setting you have set the dash switch on.it could also be the blower motor itself that needs to be replaced.with the blower on try tapping the motor and see if it tries to start.if it tries or starts to work then the motor will need replacing.
Blower motor may be going bad or have a loose connection if certain speeds do not work the blower resistor is bad.the Blower motor is located beneath the dash on passenger side under the glove box.There may be a cover that will need to removed to gain access.