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Old 06-19-2018, 09:15 PM   #1
legaspi89
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2003 L-Series 2.2L Sedan
Default Air Conditioning Problem?

On my Saturn L200 2003, The AC Blows out warm air when the car is not moving. I have the AC temp turned all the way cold but it still blows out warm air. It starts getting cold when the car is in motion for some time. What can be the problem?

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Old 06-19-2018, 10:10 PM   #2
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2003 L-Series 3.0L Sedan
Default Re: Air Conditioning Problem?

Your system lost refrigerant. Buy and use a uv blacklight to find the source of the leak. Dye will glow greenish yellow, marking the leak site. Examples of dye - remove one of the service caps and look in to the valve.

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Old 06-21-2018, 09:50 AM   #3
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2000 L-Series 2.2L Sedan
Default Re: Air Conditioning Problem?

^ Absolutely correct.

If you're not inclined to do this kind of work to find a freon leak then you'll need to take the car to a reputable shop which can diagnose and repair the problem. Personally, I leave my A/C repair to professionals. A/C work is performed very seldom on the vast majority of cars so I choose not to purchase the tools required for this more specialized work. Diagnosis is part of the total labor cost for the repair.

As always, it's your choice to pursue whichever direction is best for you.

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Old 06-21-2018, 04:24 PM   #4
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2003 L-Series 3.0L Sedan
Default Re: Air Conditioning Problem?

I would agree with Pierrot. if you are not comfortable with AC work, then leave it to the professionals. They have all the right equipment and training to work on AC systems which operate UNDER PRESSURE.

The Service Caps Fryer mentioned are usually two different sizes and look a bit like over large valve dust caps on your tires. That's pretty much what they are - dust caps. If you twist off these 'dust caps', then you will see the valve. On my own Suburban I lost refrigerant one time and when I removed the dust caps, one valve had the green mineral oil visible and the other if you placed your finger over the end you could feel pressure against your finger. If the valves are OK, neither of those things should happen. Once again, to replace leaking valves will require working on the system, so it's not something an amateur could do without the gear.

On my son's 2003 L300, when we bought it used, his ac was not working. It turned out to be a split in the ac pipe that runs from the front of the engine all the way back to the rear of the engine. That was replaced by my indi garage, the system recharged and my son hasn't had an ounce of trouble with the ac in nearly 3 years since the job was done.

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Old 06-28-2018, 10:50 PM   #5
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Default Re: Air Conditioning Problem?

You may have low refrigerant due to other causes like loose connections, old hoses or the simple escape of refrigerant over time. These small leaks can cause your air conditioning system to stop blowing cold air

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