I have a 2004 Hyundai Sonata with a problem with the a/c. When at idle it will not blow cold. I notice the rpm change when turning the a/c on but it does not seem to engage the clutch on the compressor. However, while driving on the highway it will start blowing cold as it should. I was told by a fr…

Raise the hood and see if the cooling fan is operating. Fans are not needed at high speeds but are necessary at low speeds.

An A/C shop could probably diagnose it and give a repair estimate for small or no cost.

I bought a recharge with gauge for low side. The charge showing on the gauge provided with the can says it’s normal. My friend was a mechanic for years before he lost his right eye. Now he makes parts for Harley-Davidson motor cycles. He said the valve he told me about being clogged or not operating…

2004 Hyundai Sonata A/C

Maintenance/Repairs

Tester April 28, 2021, 5:04pm 4

Have a shop connect a set of refrigerant gauges to the AC system to check the state of charge of the system.

That’s the first thing done in your case.

Tester

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2004 Hyundai Sonata A/C

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