Air conditioner not blowing

LMDUNLAP

MEMBER
2015 CHRYSLER 200
V6
TURBO
4WD
AUTOMATIC
52,000 MILES

The air in my car works fine in the mornings but in the afternoon when I start the car it doesn’t come on at all. If I roll the windows down a bit and drive on the freeway it blows just a little but not enough. If the car stops it goes off. What could this be? I stopped at a dealer and they thought that I might need to replace the radio/screen control system at $2,000.00 yikes! Could there be a cheaper solution?

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

Do you mean the blower motor doesn't work? If you are referring to the blower motor not turning on, I doubt that it is the control screen. Do you hear anything from the unit when you turn it on during the day? Basically, do you hear the blower motor running but there is no air flow?

Let me know.

Joe

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Tuesday, December 24th, 2019 AT 10:14 PM

LMDUNLAP

MEMBER
2 POSTS

Hi Joe,

I can have the blower turned all the way up and nothing comes out. Then I'll open the sunroof or crack a window and then it blows cold a little bit. But if I stop, the air will stop. Then randomly it will start blowing at full force, sometimes in 2 minutes, sometimes 30 mins. I don't hear any noise

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Thursday, December 26th, 2019 AT 11:25 AM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

When you open a window, chances are you are just feeling air naturally flow through the system. The problem seems related to the blower motor. Since it does turn on at times, then it isn't a fuse issue. At this point, we need to determine if power is making it to the blower motor when it refuses to turn on.

First, locate the blower motor relay in the under hood power distribution box. See pic 1. See if there is another relay with the same part number and switch them to see if that makes a difference.

Next, on the bottom of the blower motor is a power module. You will need to disconnect the connector I have in pic 2 and check to see if there is power to the motor when you turn the blower motor on.

If there is power, suspect a bad blower motor. If there is no power, then I suspect the power
module may be bad.

Here are a few links you may find helpful when testing.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

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

Here is a link that explains how to test a relay.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know if this helps or if you have other questions.

Take care,
Joe

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