AC not cold

Tiny
LITTLET
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 88,000 MILES
My AC started losing cold air gradually over a couple week period, then I could hear the compressor trying to click on and off, then the compressor stopped working. The fan motor still works, but there is no cold air. Could it be a relay, or is it the compressor or both?
Thank you
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Friday, May 9th, 2008 AT 8:29 PM

36 Replies

Tiny
MASTERTECHTIM
  • MEMBER
Hello,

It sounds like you are low on Freon. Here is a video and guide to help you fix the problem.

https://youtu.be/uZrQCGwXfek

and

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

Please run down these guides and report back.
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Friday, May 9th, 2008 AT 8:35 PM
Tiny
SJJLKE6263
  • MEMBER
Thanks for this post I had this problem and had to get an AC recharge kit cost me $34.00 all fixed.
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Tuesday, September 3rd, 2019 AT 2:51 PM
Tiny
RONNIEML
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,987 MILES
I have this problem that is what ever mode your on, heat or ac the air blows weak. When u change direction of air flow it works perfectly in all directions but blows softly. I checked all the air vent doors and the vaccum actuators and the vaccumclimate control switch, all seem to be working fine. Is there a chance or have u ever heard of a clogged ac evaporator being the problem, because I believe that the stream of air leaves the blower motor ( which I checked as well, air is being drawn unobstructed from outside & the motor is in great shape) and then travels thru the ac evaporator then goes inside the duct work in the van.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
The only thing left to check is the evaporator. Anything is possible, and yes it could have obstruction.

Joe
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
EINNOB
  • MEMBER
  • 2003 CHEVROLET ASTRO
Air Conditioning problem
2003 Chevy Astro 6 cyl Two Wheel Drive Automatic

Air conditioner does not blow from 4 vents on dash. Rear air works one works and top of dash vent works. How do I remedy this problem
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
MMPRINCE4000
  • EXPERT
If blower motor is OK, then there are "blend doors" that divert air to the various positions. These are controlled by solenoids and switch.

You will have to test switch and if OK, remove part of dash and repair the blend doors.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
GREG MUMUGNIER
  • MEMBER
  • 2002 CHEVROLET ASTRO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 58,000 MILES
The blower will not turn on. Turn it on low nothing turn it on high nothing. It feels like the heater is making heat but, its just not being circulated in the car.

Thanks Greg
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
PMLACEY3521
  • MEMBER
Try checking the power to the blower motor under the hood- Its on the far left with a plug sticking out of it. If it's getting power, you need to replace the blower motor- same thing happened in mine.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
KHATHCOCK
  • MEMBER
  • 2002 CHEVROLET ASTRO
Air Conditioning problem
2002 Chevy Astro 6 cyl Two Wheel Drive Automatic

The fan is blowing but there is no air coming out of the ac duct it is all coming out @ the feet. Is there a fuse or a hose off somewhere that can be causing the problem. Thanks.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
DWD
  • MEMBER
I just had the same issue on a 2000. Found the small plastic vacuum hose (1/8" od) from the right side (from the front) intake manifold to the left side AC area broken. Replaced the hose and contol now works the vents.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
MARC
  • MEMBER
  • 2000 CHEVROLET ASTRO
I have a 2000 chevy astro and the ac isnt blowing. I figured out the compressor clutch wasnt kicking in, I checked the two pin plug going to the compressor clutch and there wasnt 12 volts. I checked the fuse and the ac relay and they were fine, I checked the low pressure switch and it read continuity, I dont know where to go from here ive also checked the contacts on the selector switch because the fan only blows semi cold air int he lo and medium positions but nothing in high?
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
2CEXPT
  • EXPERT
Next step is hook-up the manifold gauges and check if it needs freon-could also be the magnetic clutch
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Okay, it sounds like you may have two problems. First, have you checked the freon level in the system? If it is too low, the compressor will not engage. If it is good, have check the cycle switch.

Next, are you saying the blower motor doesn't work on high?

Let me know.
Joe
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
JDAUG0125
  • MEMBER
  • 2002 CHEVROLET ASTRO
Air Conditioning problem
2002 Chevy Astro Two Wheel Drive Automatic 81529 miles

Front AC works sporadically. Front AC MAX Fan and MAX cold trickles cold air sometimes and sometimes doesn't come on at all. Rear AC MAX Fan works constantly with a steady stream of lukewarm air. Followed directions in Haynes but still no positive results. Freon charge was 35lbs. Recharging freon with 134A to 37lbs did nothing. Both the front and rear accumulater are cold to the touch but the evaporator inlet pipe is warm/hot.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Hi
Was there a failure in system previously? Could you provide high side reading? It is possible that debris in system has blocked orifice tube and rear expavsion valve.
Let me know
Thanks for donate
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
JDAUG0125
  • MEMBER
A/C has never been serviced, however A/C (and heater) have been sporadic for a few months. My guage only fits low pressure port, high pressure port is a different size. Additional info, when vehicle reaches operating temp (210 F) and I engage the A/C, both front and rear accumulators ice up but the evaporator inlet pipe remains warm. When compressor kicks on, ice on accumulators melts and pressure rises to about 40lbs. When compressor turns off, pressure drops to about 25lbs and accumulators freeze up. Thanks for any and all help you can give me. I am about to drive across country after retiring from the military and it's going to be hot in Oklahoma, Texas, Arizona, etc.

Jerry
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Without high side hard to say for sure but for low side to go up and ice on accumulator leads to the logical conclusion orifice tube blocked as well as expansion.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
JDAUG0125
  • MEMBER
Is this something that I can fix myself or should I go to a professional? Trying to avoid added expense.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
SETSAIL75
  • MEMBER
  • 2002 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 91,958 MILES
Hi,

I was wondering if anyone could help me with this problem. My A/C only blows out of the defrost vents (by the driver and passenger door, windshield and under the dash). It was one of those instances where I got in the vehicle one day and started it like normal and then the A/C wouldn't come out the front vents. Before that it worked perfectly and showed no sign of any problems. Both the fan speed switch and the temperature control switch work fine.

When I turn the A/C selector knob, for instance, from off to Max A/C to A/C, etc. All the way to defrost, I can feel and hear the A/C going through its motions, so I don't think there's a problem there. It still blows cold enough. It simply won't divert from the defrost setting to blow out the front vents. I've checked all the fuses and the relays seem fine, but I haven't put a meter to the relays yet as I don't think that's the problem. That would be nice considering I don't want to do surgery on the dash to get at the internals. Is it possible that there are leaves or some such other blockage holding up the diverter? Any help anyone can provide would be greatly appreciated. Florida is unforgiving without A/C!

Thanks, Jeff
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Orfice tube needs special tool to remove located in evaporator where high side line attaches. Expansion valve on inlet side of rear evaporator couple whenches takes it off. Would start with orfice tube as it is easy to see if debris is problem. Parts house should have tool needed.
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Tuesday, September 3rd, 2019 AT 2:52 PM (Merged)

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