AC not blowing cold air

Tiny
DSTONEN
  • 2000 CADILLAC DEVILLE
  • 122,000 MILES

I cannot get car to blow cold air I checked freon, compressor, belts, fluid. It will bow out very hot air on passanger side an ambient air on driver side an rear air. Never felt cold air since I bought car. Freon compressor are fine. Also no outside temp reading on my digital dash bord its blank. Please help!

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Tuesday, July 24th, 2012 AT 6:04 PM

22 Replies

Tiny
ASEMASTER6371
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What are the exact pressures on the ac system?

Roy

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Tuesday, July 24th, 2012 AT 6:45 PM
Tiny
DSTONEN
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I dont remember it was a cheap tester from advance auto, I do no that it was right next to the red, right next to it, cause I asked if that was a problem!

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Tuesday, July 24th, 2012 AT 11:17 PM
Tiny
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Advanced auto is parts salesman, not techs.

We need the pressure to see what is happening so we can further help you.

Roy

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Wednesday, July 25th, 2012 AT 12:23 AM
Tiny
DSTONEN
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I said I used an advance auto pressure test I felt like that was a cheap test comared to a shop test. An I cant remember exact but the needle was right next to the red but still in the cold but very close to the red! (Preasure test)

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Wednesday, July 25th, 2012 AT 12:39 AM
Tiny
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Ok, sorry about the advance.

Can you hook it back up and give us the high and low side pressures while running? Pressures never are a sign of freon level but it will help us in determining other operations

Roy

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Wednesday, July 25th, 2012 AT 12:49 AM
Tiny
DSTONEN
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Ok sorry I was talkin about freon level but I cant till tomorow cause im at work is that ok?

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Wednesday, July 25th, 2012 AT 12:55 AM
Tiny
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Sure, when you can. There is always someone hear to answer.

Roy

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Wednesday, July 25th, 2012 AT 1:03 AM
Tiny
DSTONEN
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Thanks so much I had the pressure checked an it was very low it took 1 &1/2 cans it blows cold but not as cold as I exspected it was profetionally put in an checked so it was filled with freon to the t I now thats important, at one point I thought there air cut off an back on, on the drivers side, also I still hadnt got the ambient air temp sensor yet its on order, any help would b appretieated.

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Thursday, July 26th, 2012 AT 1:07 AM
Tiny
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Ok, what were the pressures?

Roy

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Thursday, July 26th, 2012 AT 1:11 AM
Tiny
DSTONEN
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Lol I dont no the tec did all that I remember below 200 an 42 or something like that.

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Thursday, July 26th, 2012 AT 1:13 AM
Tiny
DSTONEN
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268 liquid 48sucktion thats what the tech told me I didnt think it was that exact but thats what he said!

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Thursday, July 26th, 2012 AT 1:18 AM
Tiny
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Low side is too high. He may have overcharged it or the orfice tube may be clogged with dirt

Roy

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Thursday, July 26th, 2012 AT 1:29 AM
Tiny
DSTONEN
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Ok low side is sucktion or liquid an can u tell me what it should be?

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Thursday, July 26th, 2012 AT 1:32 AM
Tiny
DSTONEN
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Also would the ambient temp sensor hinder the air in any way?

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Thursday, July 26th, 2012 AT 1:34 AM
Tiny
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In most cases, it should be 30-35 lbs. The high side should be 2 times the outside temp plus 15%

Roy

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Thursday, July 26th, 2012 AT 1:35 AM
Tiny
DSTONEN
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I dont no if u got my second question about the ambient temp sensor?

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Thursday, July 26th, 2012 AT 1:41 AM
Tiny
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Yes it would but you need to have the system operating correctly first.

Roy

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Thursday, July 26th, 2012 AT 1:44 AM
Tiny
DSTONEN
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Ok I will check again tomorow an write down cause from what I saw I think he is wrong I now he added freon an it was at 200 an then he added more an it went a little below 200mabey 190 an the other was 43 or 33 an when he added more I did not recheck that but I will write down tomorow thanks an I will b donateing money on the 3rd when I get my check, you are a blessing thanks again.

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Thursday, July 26th, 2012 AT 1:50 AM
Tiny
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Good luck

Roy

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Thursday, July 26th, 2012 AT 1:52 AM
Tiny
DSTONEN
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The exact reading is 45/190 (pressure for ac) also the air seems to have a mind of its own its ice cold on minute an not so cold the next, I am exspecting the ambient temp sensor today, an tec says that we live in g.A an it is very hot an humid an that may b the reason for the hirer pressure reading. Thanks in advance!

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Thursday, July 26th, 2012 AT 1:47 PM

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