Air conditioner intermittently stops working

Tiny
BAZZELL247
  • MEMBER
  • 2007 TOYOTA CAMRY
  • V6
  • 2WD
  • AUTOMATIC
  • 175,623 MILES
My air conditioner works great most of the time, but sometimes when I turn it on, no air comes out of the vent, everything else is on but there's no air. It will just randomly start blowing. My daughter has the same car except hers is a 2006 model but the same issue.
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Monday, May 30th, 2022 AT 1:08 PM

3 Replies

Tiny
KENNY K
  • EXPERT
Just to be clear this is not an actual A/C issue, the air would stop working/blowing if you had it on heat as well?

This sounds like a blower motor issue, but I just want to be sure because I have had these issues in the past and people tend to use certain terms that imply one thing, but the issue is another.

So, if when you have the A/C on and all of a sudden there is no air blowing at all then that is a blower motor. However, if the A/C is on and all of a sudden it starts blowing warm then this is an A/C issue.

Here is a guide for what I understand is happening which is there is no air at all:

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

I am attaching the wiring diagram below, but I suspect this is one of two issues. Either the blower motor is failing because when they get hot, they will shut off until they cool down. Or this is a control module issue which is the A/C amplifier.

Basically, the way to find out is when this shuts off and is not working, we need to check and see if there is voltage. If there is no voltage, the Amp is the issue. If there is voltage the blower motor is the issue.

https://www.2carpros.com/articles/how-to-check-wiring

Let me know if you have questions. Thanks
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Monday, May 30th, 2022 AT 7:28 PM
Tiny
BAZZELL247
  • MEMBER
Hi, thank you for responding. So, it happens both hot and cold but usually when I first start the car. No air blows from the vents it usually starts blowing after driving for a while or after I stop and crank the car again. It's really random.
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Tuesday, May 31st, 2022 AT 4:56 PM
Tiny
KENNY K
  • EXPERT
This sounds like a blower motor that is beginning to fail. So, the only way we are going to know for sure is to check the voltage at the motor when this is happening.

So, the wiring diagram above is what we will need to use to confirm this.

Clearly this could be an amp issue but it does sound like a blower motor so that is where I would start. Let me know if you have questions on doing this.
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Tuesday, May 31st, 2022 AT 5:41 PM

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