H3 AC not blowing cold air

[derian06]

2008 hummer h3 alpha
Started out with a strange swampy smell and me noticing that the air wasn't blowing as cold as it normally would, and now all it does it blow warm air regardless of the setting on the climate controls. What part normally causes a problem like this? What should my first step be?

 

[CaseyS]

Fly north for the summer.

 

[CaseyS]

Is the actual clutch engaging and the compressor turning? If the compressor is not coming on, likely an electrical or control issue. If the compressor is turning, then likely a refrigeration type issue.

 

[awalsh]

Ac fluid? Just had mine done because before that the Ac wasn't cold at all


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[alrock]

Is the actual clutch engaging and the compressor turning? If the compressor is not coming on, likely an electrical or control issue. If the compressor is turning, then likely a refrigeration type issue.

This. And it's not uncommon to need a recharge, i.e. to have a tiny leak. But if it's a leak, they should still do a test and make sure it's not a significant leak. My 07 has never needed a recharge but I've had a newer car that has.

 

[Peep]

I had that. There is a cheap unit on the firewall that allows the truck to open up the gas main tank or close just recycling what is in the lines. When it would stick on my that would happen. Bought a new one off amazon, and it's worked now for the last 3 years.

if you can't figure it out, I'll look it up for you. Sorry can't remember what is called, but if it's your problem it's a ultra cheap fix

 

[derian06]

Is the actual clutch engaging and the compressor turning? If the compressor is not coming on, likely an electrical or control issue. If the compressor is turning, then likely a refrigeration type issue.

The actual clutch is engaging and the compressor is turning.

Ac fluid? Just had mine done because before that the Ac wasn't cold at all


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they ever figure out where your leak was coming from?

I had that. There is a cheap unit on the firewall that allows the truck to open up the gas main tank or close just recycling what is in the lines. When it would stick on my that would happen. Bought a new one off amazon, and it's worked now for the last 3 years.

if you can't figure it out, I'll look it up for you. Sorry can't remember what is called, but if it's your problem it's a ultra cheap fix

With the new information provided above could this unit still be the cause of my issue?

Thanks for the responses yall.

 

[CaseyS]

Yes. Very possible. It the TXV or TXD thermal expansion valve.

 

[awalsh]

Not sure, after the engine swap they didn't have time to do a recharge so I drove around for a week before I got it done. Ac was warm and not blowing cold obviously but after the recharge it was super cold.


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