S-10 :: 2003 - Compressor Comes On But No Cold Air From AC
Jun 26, 2015
Friend bought a 2003 s10 pickup. AC does not work so he brought over to my house so we could try to add freon.
Compressor come on when he puts ac switch but no cold air.
I tried to add freon and would not suck it in, can did not get cold.
I tried to see if any freon was in the system by pushing in the needle on the low side and nothing but air came out. I got it to where the compressor clutch stopped working. So I tried to add freon again and still nothing.
Does this sound like the compressor is gone and or the dry evaporator canister bad?
He is willing to get a used compressor and try and see if that is the problem since the compressor had no freon in it. If it still had air in the system and clutch turned on I might think there are no leaks if there was there should be no air in system and clutch should not work/come on.
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I have a 1991 Bonne LE with 150,000 miles. Have had GREAT luck with this car but realize it is getting high miles. I recently drove it about 250 mile trip and the A/C worked perfectly staying nice and cold. The next time I drove it, when I turned the A/C on, it got cold after about 5-10 seconds and then it was like you turned only the blower on with no A/C. It does the same thing every time I turn the A/C on, gets cold fast, then just neutral temp with no cold air.
I checked the compressor switch and it is working fine, and the compressor is engaging and staying engaged, but not outputting cold air except for the first 10 seconds or so. I do believe the temperature door inside the dash is opening properly. What I might check myself before taking the car in for A/C service? I am capable of replacing the compressor & seals myself but would have to have someone discharge the system and then recharge it afterwards.
The car is a rebuilder that I bought about 10 years ago. The fellow (very trustworthy) who rebuilt it replaced all the A/C o-ring seals when I bought it and made sure the system was fully charged. It has worked perfectly this whole time. He also gave me the a/c compressor and other parts from the parts car that was used to rebuild this one.
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The AC on my car (2002 Jetta 1.8t) quit blowing cold. Did some troubleshooting and...
1. Checked Freon- level was ok
2. Noticed cooling fans were not coming on with AC button pressed and ignition on. Fans also not coming on when car up to temperature, but gauge never went above normal. Seems strange considering I live in Houston and it was 95+ out.
3. tested fans with direct power and both high and low are fine.
4. jumped terminals 1,2 and 2,3 on plug for cooling fan switch and fans turn on high and low...so thought must be bad cooling fan switch.
5. Replaced cooling fan switch and still no fans or ac when AC button is pressed and ignition on.
6. replaced Fan control module. Still no fans.
7. Checked Freon once more...and although it was in the ok range decided to add a little more. (was in the middle of ok range, and a cheap gauge)
8. Compressor kicks on, along with cooling fan. End up using the 1 can I had and now have cold air and fans that come on when hitting the AC button with ignition set to on position.
I thought the mkiv cars would always turn on the fans when AC button is pressed with ignition on? Or does the compressor also need to be charged?
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With the hood popped and the a/c on, you can see that the compressor isnt engaging. The car makes a noise like its engaging the compressor, but nothing is happening that I can see visually. Seems as if the compressor is not getting the signal to engage. It sounds like its trying to make the compressor kick on about every 5 seconds or so. Basically that initial clicking sound that your hear RIGHT before the compressor comes on when its working normally.
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Here are the symptoms:
1) A/C doesn't blow cold, at times.
2) Compressor not coming on, according to mechanic.
3) Engine sounds like a freight train, at times. Like on a super cold day and it has to work hard.
4) Very poor fuel mileage since this started.
I took it to a shop, and they said it was the engine cooling fan that would not come on. So I replaced it. Same issue. I then took it back and was told there is a wiring problem. After 3 days they couldn't find it. I needed my truck back and dropped it off again. Then they said it was the A/C compressor, maybe. They wanted to try it and then see what happened. I told them no way.
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