AC not cold

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.

Thanks for this post I had this problem and had to get an AC recharge kit cost me $34.00 all fixed.

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.

Hi:
The only thing left to check is the evaporator. Anything is possible, and yes it could have obstruction.

Joe

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

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.

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

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...

Air Conditioning problem
2002 Chevy Astro 6 cyl Two Wheel Drive Automatic
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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.

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.

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.????????

Next step is hook-up the manifold gauges and check if it needs freon-could also be the magnetic clutch

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

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.

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

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

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.

Is this something that I can fix myself or should I go to a professional? Trying to avoid added expense.

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

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.

Hello Jeff
More than likely the blend door motor is bad, this is a fairly common problem. The replacement part runs about $50.00 and is available at most part stores.

John

Don't want to sound like an idiot but don't I need to have the system discharged by a professional prior to checking the orifice tube? This doesn't sound like something i can do myself.

John
Thanks for the advice thusfar. I appreciate you getting back to me so quickly. I've removed some of the plenum on the passenger side as well as the center console in search of the blend door motor. Could you guide me to where it is? Is it behind the A/C switches in the dash or elsewhere? I've also checked the vaccuum lines and solenoids and they all seem fine. Thank you again for your help!

Jeff

That would be the acceptable way not releasing 134 into atmosphere. And using a profesional maybe the way to go cause there a chance evaporator can be damaged if orfice not properly handled.

Jeff
It is located on the side of the plenum, has a plug with about 5 or 6 wires going into it.
John

Not to be rude, but wasn't that what I asked on my previous post..."Is this something that I can fix myself or should I go to a professional?" If I hadn't read in Haynes about discharging the system prior to checking the orifice tube screen, who knows what could have happened. Your post at 12:10 to my previous post said nothing about discharging the system. You only said i needed a special tool and that a parts house should have it. Thanks for the information that you provided but I probably could have had a free A/C check at a local shop and gotten the same info.

I just finished fixing the vacuum hose problem that is common on Astros-- causing no air through dash vents. I pulled the dash and the doghouse, replaced the entire small vacuum line as, well as line from T connection to the vacuum ball. I have LOTS of air flow now-- BUT, now it's not cold. It was plenty cold before I 'fixed' it and the rear air worked great. Now neither front or rear is cold. I'm guessing I disturbed a wire somewhere. The compressor seems to kick on OK and you can hear the stronger airflow when switch is in MAX position-- but it's not cooling. Any help?? There is a wire connection on the top of the doghouse that I unplugged when removing it. Of course I plugged it back in-- What is that wire? Any thoughts what I did to stop the cool?
Thanks!

Be sure th eheater control valve is working properly, you may have caused that to put hot water into the heater core all of the time. also check the blend door to be sure it is switching from hot to cold. Look to see if you pinched the vacuum harness that hangs down on top of the dog house, that could cause a problem too

i don'tknow your capibilities you had gague readings and appeared to have somwe knowledge. Most people on site are DIY assumed you where the same.
It never occured that I needed to tell someone system needs discharge before opening up. It's shut water off before replacing fauset washers.
Sorry just trying to help

Thanks-- I don't know "Heater control valve" and "blend door". Can you explain a little more? Where located and what I might have done? I'll check the vacuum harness.

Thanks-
Brad

Sounds like Doc is correct with some kind of restriction in the system. We never know the abilities of the people posting in here,so it is hard to know what anyone is capable of. Evacuating/charging the system is something that you can have a shop do, then replace the parts yourself to save money. It is also difficult to accuratly diagnose an a/c problem without high-side readings, that is where the magic happens and it is critical to proper operation.If you haev anymore questions, feel free to email me @ [email protected]

Heater control valve is up by the firewall where the heater hoses connect. It is an inline valve that is vacuum operated and lets hot water flow through the heater core.Blend door is th edoor that directs air from hot (heater core) to cold(evap core)

Hi Guys,

The air in my van is blowing cold through the rear vents and also through the floor vents up front. However, the front vents in the dash are not blowing anything. For a while, they simply worked on the middle and highest speeds. Then they worked intermittently whenever they wanted to! Now they do not work at all. The air is on and works just fine through the other vents. What could be the problem? Is it something we can fix ourselves? We live in Florida and so garages charge an arm and a leg to fix A/C problems because they know you can't live without your A/C here. Any advice would be appreciated. Thanks

It sounds like you have two different problems. First, the air flow problem is most likely a vacuum leak. The vents that direct the air flow are run by vacuum. If there is a leak, that is what will happen. As far as the fan speed not working, it is either going to be the blower motor resister or the fan relay.

Let me know what you find.

Joe

My Chevy Astro Vans front air vents blow air but not cold. The rear air works fine blowing cold air. Is there a way that I could repair the front air conditioning or is the problem serious enough to take to a repair shop.

Thanks

It sounds like a problem with the blend air door. It determines if you get AC or heat. It is located near the heater core. Check to see if it is working.