A/C blowing warm air

PODGE1

MEMBER
2010 OPEL ASTRA
1.6L
2WD
MANUAL
100,000 MILES

My A/C is blowing air, but not cold. I went to the store and bought refrigerant as I thought the system was empty. After filling it up the air was still ambient temperature when I turned it on, and didn't cool at all. There doesn’t seem to be any more obvious signs, only one being the air is not cold.

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

We need to start with two things. First. turn the engine on and the A/C and look under the hood and see if the compressor is turning on and off. If not, then we may have a compressor issue, still low Freon, or a pressure sensor issue.

If the compressor does not come on then we could have a compressor issue, electrical issue, or still low Freon.

After that if the compressor is coming on then we need to check the pressure with a gauge set to get the high and low side pressure. If it is not coming on then we need to find out why it is not coming on.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Let us know this info and we can go from there. Thanks

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Sunday, September 6th, 2020 AT 3:39 PM

PODGE1

MEMBER
2 POSTS

I have a very limited knowledge of cars, but open to learning.
From what I can see, it seems like the clutch does not engage and it continues to run. Maybe I’m looking at the wrong place. I will include photos.
The A/C seems to be cool but not nearly as cold as other cars when the A/C is turned on and fans to max.

Is this the compressor that I have labelled?

Images (Click to make bigger)

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Monday, September 7th, 2020 AT 8:42 AM

KASEKENNY

MECHANIC
18,907 POSTS

Are you saying it does not disengage and just keep running? If that is the case it is because it is not building pressure to trip the cycling of the compressor.

That does not look like the compressor. I circled the two that appear to be the compressor. Can you get the same picture with the engine off and I will try to identify the compressor clutch which would be the compressor.

However, this all just points to even more about why we need to get the high and low side pressures.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

You should be able to rent a gauge set shown in the pictures and then just hook them up to the service ports and start the engine to get the pressures. Let me know what they are with the A/C on and we can go from there. Thanks

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Monday, September 7th, 2020 AT 7:23 PM