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Ac blower quit?what switch is the ussaull culprit

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What make , model an year vehicle ? Probably blower motor or blower motor resistor or could be a control processor . But those are just guesses . Testing the blower motor electrical circuit is the proper way to a fix . Do you know how to do automotive electrical systems testing using a DVOM - digital volt ohm meter ? How to read an use a wiring diagram to pin point places in a wiring circuit to do testing at ?
Blower Motor Problems Auto Repair Help

How to test blower motor and resistor subscriber requested

Newer vehicles with automatic climate control have a control processor in charge
HVAC Blower Motor Circuit

If you don't know any of this your best bet would be to take to a qualified repair shop .

Posted on May 15, 2017

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It's rare that the condition your describing is caused from the switch itself. 99% of the time the culprit is the blower motor resistors. It's a set of resistors that lowers the voltage to the blower motor to control it's speed. It's usually a quick install and about $20-$40 in parts. Most likely only available from the dealer though.

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1995 Jeep Cherokee AC blower doesn't work. Replaced blower resister, blower, and Aux fan fuse and still it doesn't work. I'm running out of things to check. Original problem was that blower was screeching...


do you have feed to blower motor ?? sorry CSI is coming on TV now and er indoors is screaming that i spent too long on here '¡'¡'¡'¡'¡ usual ----typical woman ,if you have her i will throw my jag in the deal for free

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Front AC Blower quit working. Rear AC blower


The first thing I would do is check to see if a fuse is blown or bad relay. Then I would unplug the blower motor with a test light make sure you are getting power to the blower located on the far passenger side of the vehicle under the dash if it has power and good ground then suspect vaulty motor. If you are not getting power at the plug then you might have a bad switch or resister. If it does have a blown fuse remember they usually blow for a reason like faulty wiring or even a in the motor itself. I would also recommend that you change the ac cabin filters behind the glove box if they have not been changed most people neglect them on that vehicle because they are a little more difficult to change, after removing the glove box there is a metal bracket in the way of opening the cabin filter compartment. They wont cause a blower motor to not work, however they do restrict airflow to the evaporator and they protect you from pollen, dust, and even exhaust gases. Hope this helps.

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3 Answers

My blower motor quit working all together in my 04 sante fe. the relay is still working i can hear it clicking when i turn the switch on and off the motor also works because i have put straight power up to...


take the 2 screws out that are behind the ashtray and gently pull the blower controls away from dash on the main plug going into the harness you will find a loose connection with a thick blue wire
it may also be melted due to overheating nothing is wrong with your switch just the connection by looking at it you will have to determine the way you have to deal with the problem.

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