Automotive Air Conditioning Information Forum

Generally a system leaks refrigerant as well as oil - generally. We have seen instances where either item leaked out without losing much of the other.

A system that has been "topped off" a couple of times will be somewhat low on oil. It kind of sounds like your compressor is trying to seize when ...

We,, as GMTech used to say

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of ...

How many miles on the '06 Sienna?

Any history on the vehicle? A/C service? 1500 hours of soccer mom idling?

The condenser is the primary filter. The screen is there to tell you how much trash made it all the way through. The good news is OEM Denso condensers are cheap & available. Good call on ...

That vehicle has a variable displacement compressor. Recover the charge & weigh it - probably not much left.

A new AC Delco condenser is under 150 bucks with a new dryer if you need one. TXV about 60 bucks.

Could be you just need a new control valve in the compressor, or just a fully charged ...

"Stopped working" is a pretty general term, but I read it as the compressor stopped. If it was running, and not cooling it could be several things. Too bad you don't recall the exact pressures.

You have an empty system. The two choices are add refrigerant & diagnose the issue, or break it down ...

If it still had pressure when it quit, it may have been something as simple as an excessive clutch gap.

Any chance you can get an electronic leak detector? If so charge a few ounces & go looking for a leak.

The suction line nut on the compressor could be loose, I have seen it before. Try it with a ...

Fixed Displacement compressors with a TXV may cycle. If the heat load exceeds the capacity of the system the compressor stays running.

The only reason for the compressor to cycle off is to prevent ice formation on the evaporator. Around here at 115f & 7% RH I can let an evaporator get to 20f ...

The 2012 Corvette is equipped with a CVC compressor, a variable displacement unit. It does not cycle, it just reduces displacement to maintain a pre set low side pressure.

Are you keeping the 2012 Corvette PCM?

Since the compressor is designed to perform the same function as the POA, I can only ...

A wheel type pipe cutter will pop that dryer can in half with no fuss if you want to see what went wrong with the old one. Cut the bottom 2 inches off for fun...

When you can't actually change the fan speed on it, the blower speed module is done. It gave you a couple of warnings, now it is failed completely.

The auto climate units use a solid state control instead of a resistor, but it is located in the same place.