A/C and heating come on or turn off while in the on mode?

2009 KIA SPECTRA
90,000 MILES • 2.0L • 4 CYL • 2WD • AUTOMATIC
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JIML3
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A/C and Heating are intermittent. Sometimes when hitting a bump, the A/C or heat will either turn off or come back on when it is in the run mode.
Feb 8, 2025 at 11:13 AM
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STRAILER
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This is coming when the blower motor starts to go out. here is the location so you can change it out which should fix the problem. Check out the images (below). Let us know if you need anything else.
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Feb 9, 2025 at 9:45 AM
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JIML3
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I read the answer however the fan motor functions properly. To me it acts like a poor ground, bad coil in the relay or a bare wire grounding out. I really need a wiring diagram so that I can trace the wires. I have not been able to find any. Do you know where I can find one for my vehicle? My problem is that the diagrams I find are not for the 2009 Kia Spectra EX but for different models.
Feb 9, 2025 at 12:48 PM
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STRAILER
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Okay, here is a guide to help you test the blower motor power and ground with the wiring diagrams in the images below.

https://www.2carpros.com/articles/how-to-test-an-automotive-hvac-system-blower-fan-motor-a-detailed

So, it is the blower that stopped working, correct? Check out the images (below). Please let us know what happens.





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Feb 10, 2025 at 9:46 AM
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JIML3
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No, the blower motor runs correctly. While the blower motor is working either the heat or cooling stops while the blower is running.
Feb 10, 2025 at 3:21 PM
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STRAILER
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Please start a new thread.
Feb 11, 2025 at 10:12 AM