Question about 2002 Chevrolet Astro

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I took my 2002 astro in to get the head gasket replaced. Now my ac is blowing hot air only. The compressor is not kicking on either. Is this a vacuum line and if so where is it located?

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Sounds like the mechanic discharged the ac while replacing the gasket. Have the freon replaced.

Posted on Jun 27, 2009

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I have a 2002 pt cruiser that is blowing the ac 10amp fuse repeatedly. I mean within minutes of changing it. Also the ac is only blowing hot air. Can someone please help.


An AC system blowing hot air is usually due to a low freon charge or a non operational AC compressor. If the fuse blows, disconnect the compressor electrical plug and turn on the AC. If the fuse doesn't blow, suspect a compressor problem. If the fuse continues to blow with the compressor disconnected, there is a direct short between the ON/OFF switch and the compressor which can take hours to diagnose

Sep 07, 2015 | AC Cars & Trucks

1 Answer

My 2002 Yukon XL A/C blows only hot air?


Is compressor kicking in? Fuses? Blend air door actuator failed or vacuum leak? bad vacuum check valve?

May 07, 2015 | Cars & Trucks

1 Answer

1995 Buick Century blowing hot air.


A mechanic would check the system with a set of pressure gauges. If the compressor is running, the low side would read around 30psi and the high side would be around 250psi. That is how you know if the system is full of freon or not.
You may have to get a professional diagnosis to proceed. If you replace the compressor, the accumulator needs to be replaced and a vac pump is used to pull all of the air out before the freon is added.

May 07, 2013 | 1995 Buick Century

1 Answer

How do I change expansion valve on 02 astro


Well you have to evacuate the freon into a storage machine, then take the inside trim panel off to access the ac unit. The expansion valve should be attached with pipe fittings. After the part is replaced a vacuum is pulled and then freon added back.

Jul 27, 2012 | 2002 Chevrolet Astro

1 Answer

I own a 2002 2500 4x4 diesel when I step on the brakes sometimes the ac will kick off and blow hot air in, to fix I turn off ac switch just for 2 to 5 seconds and turn back on and it blows cold air again....


Vacuum. Your brakes probably work off of it too so it feeds all of the vacuum to the brakes and pulls it away from the A/C. I had an S-10 Blazer that did that.

Sep 06, 2010 | Dodge Ram 2500 Cars & Trucks

1 Answer

My 2002 Expedition air conditioner will sometimes blow hot air and others cold air


I would check the following possibilities:
1. Is compressor clutch working? - You need to do this when the ac is blowing hot air only - locate compressor drive pulley on engine - rubber belt wraps around it. Start engine and set to max ac. When the ac is blowing hot air, look at the center of the compressor drive pulley using a good flash light - watch it for a while, it should be spinning with the pulley - this means the compressor is engaged. If not, the compressor is not engaged. If your ac is blowing hot air, then the compressor should be engaged and running (trying to cool). If it is not engaged, then your compressor clutch is probably going out. Could be low voltage to clutch, but more likely the clutch is worn out and only working some of the time. Note: if working normally, the compressor clutch will engage and disengage in cycles- but the air should always be cold. If clutch is bad, compressor would need to be replaced (sold as one unit). This is tricky to diagnose and could take some time - you need to do it when ac is blowing hot air but set to max cooling.

2. Low on refrigerant or refrigerant has moisture in it? If your ac blows cold initially after being off for a while, then heats up, and continues to regularly cycle back and forth between hot and cool air, then the system may be low on refrigerant or the refrigerant may have moisture in it that is freezing and restricting refrigerant flow. An a/c shop can check refrigerant level and even replace refrigerant if moisture is suspected.

Could be other issues, but I would start with these.

Good luck

May 07, 2010 | 1999 Ford Expedition

1 Answer

My 2002 Sentra's AC just blows warm air. The


You most likely just to to have the freon recharged.

Jul 08, 2009 | 2002 Nissan Sentra

1 Answer

I have a 2002 Ford Mustang. My air conditioner is not working properly. It blows into the defrost when I take off and when I let off and go a steady speed it blows out cold. It blows hot air sitting at...


if it never comes out face vents then u have a door actuator motor not working ,,if it jumps around letting off throttle then it is a vacuum problem vacuum under hood going into the firewall needs to be checked,,and vacuum resovoir might have hole in it if it is vacuum cantrol,,,the reason for warm and cald temp changes is probley not enough air flow threw radiator and condenser this will rise the high side and low side heating up the freon and it cant cool the freon down enogh to get col air ,electic fan not coming on would cause this or fan clutch (if it has one ) would also cause this .look for fan relay not working ,also did u change accumilator and dryer? ,also may have blockage in condenser i hope i shed some light on the problem

Jun 30, 2009 | 2002 Ford Expedition

2 Answers

Grand prix 3800 blowing only hot air please help


check the temp control switch in the dash

Jun 19, 2009 | 2002 Pontiac Grand Prix

2 Answers

No cold air


air doors stuck broke or not getting vacuum.

Apr 16, 2009 | 1998 GMC Jimmy

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