How Automotive Variable Displacement A/C Scroll Compressors Work and Fail
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- เผยแพร่เมื่อ 30 ธ.ค. 2016
- If you have a concern with your variable displacement compressor in your Ford Five Hundred, Freestyle or Montego save money and fix it with a new valve or All new Compressor not the Ford unit for $900!
Variable Displacement Scroll Valve Fix for poor cooling at low RPM's-
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All New Compressor I recommend for units with housing leaks-
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Scroll Compressor Animation-
• Scroll Compressor
Variable Displacement Valve Operation-
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Come along as we pull apart a Scroll Compressor to see how it all works!
My Company BSG Automotive offers Auto Repair services in the greater Chicagoland area.
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I've handled many thousands of compressors and never torn one apart completely. Thank you.
This was a fascinating and very well done explanation of this type of compressor. Thanks!
Happy New Year. Great Video. I used to love tearing stuff apart just to put it back together. That's when I learned to study and pay attention to the why of things. Best Time Ever!
Check out AvE on these tubes.
Interesting compressor design, I have never come across one of the scrolls. Thanks for sharing
Happy New year Thanks for all your great video's .
I have a HVAC channel and we use scroll compressors very widely. In fact there is a compressor that does similar variable capacity for home heat and air. It's a little different than what you showed here. Looks like the variable valve bleeds high pressure back to the low side of scroll and that is probably why it needed that thermal overload because compressors are cooled by the suction gas.
Great tear down and explanation! I was curious about scroll compressors because all I've dealt with in the past were piston. That compressor looks identical to the one I just replaced in my '05 Saturn Vue with the Honda 3.5L V6. I'm pretty sure my problem (aside from the compressor leaking) was the variable valve was sticking, good cooling on highways or when accelerating but high 50's to mid 60's vent temps in town/traffic.
Great tear down and explanation. Great job
Extremely fascinating Brian!! Thank you for doing that.
Excellent & informative video, thank you..
The "gasket" is not a gasket, is a shim, used to regulate the tolerances between the scrolls. Some compresors have two or tree. The seal is made by the o-ring
Very interesting! Nice simple "reliable" design.
Great video man help me to repair my self and save lot a money.
Great job. Thanks for posting. I think I have this same compressor on a 2003 Saturn L200 believe it or not.
I recently bought a 2013 Edge. I assume it has a standard compressor? Love your videos!
Thanks for explaining
Another outstanding video Brian! Thanks and Happy New Year to you and family!
Our 2006 Ford 500 had one of these and the seal at the main shaft failed somehow.
Leading to a massive refrig leak...it only lasted 75,000 miles.
Any insight into why the main shaft seal would have failed on this unit?
Osu IT in okmulgee Oklahoma would teach about this. Those professors are the best your money can buy for learning hvac theory.
I think non-servicable today, just means (parts are too cheap and labor is too expensive)
2003 ford taurus..140k. AC compressor clutch is disintegrating but compressor still works. I made the decision to replace the whole unit vs rebuild the clutch. I got the whole compressor and hoses o-rings orifice tube and whatnot for 200 bucks. The clutch rebuild was going to cost 85 bucks. In your experience, is this the right move.
Does the 2003-2011 Town Car also have a scroll compressor?
Will a bad scroll valve cause the compressor to be noise and have a high low side reading I don't have a good set of gages anymore to check the high side psi
I was thinking maybe a bad expansion valve but now this profile thing has me thinking
does this valve prevent the compressor from cycling and letting freon flow when compressor is over charged?
buena tarde como cambio el rodamiento o balinera de ese compresor?
thank you
When the valve on the back is activating, will you hear a hissing sound like freon escaping? I just replaced this compressor on a 2007 Escape Hybrid and it keeps hissing at about 300-350 PSI (at which point the PSI on the gauges will start to dip), when the over pressure is minimum of 550 PSI, the fan switch does not activate until 310PSI, and the high pressure switch range of 435-475PSI. Where is the over pressure (pressure relief) valve?
i have 2.3l 2011 mondeo "mk4" 6speed awf21 auto transmission , i want to change the transmission fluid , do i need to use any type of sealant on the drain plug when i finish draining the fluid and is it a seal system meaning can i change the fluid without changing the filter ?? if there is anything else i need to know plz tell me
i really like your videos and i need your help on this one
Abu Cezar
I don't know if yours is a sealed transmission, but I would say it's probably better to change filter if possible for just in case factor if it's time for fluid change. also like oil drain plug I've never heard of sealant for drain plug. if you do and are able to change the filter you would need gasket seal for transmission pan. don't know 100% I'm right but I've done some home mechanic work. all procedures are variable by design and changes over time
What is the cause for higher discharge pressure and higher suction pressure ie high side PSI 200 and low side low side PSI 40 and cooling is poor
I'm having problems with this type of compressor on my 2006 Lincoln LS
My 2010 F150 compressor feels like it is over working and shakes the whole engine when in use. Had the system evacuated and refilled with no change. Is my compression the same style as this? Can I repair the internals and not the whole unit?
Daniel Frank might be loading the engine to much and dropping the rpm to a point that causes it to shake.
isn't it also used in weaker vehicles? my chevy s10 has a variable compressor like that. I put a regular compressor on and when the compressor comes on the engine revs change dramatically and it has to compensate
the s10 4 cylinder engine has 118hp for a 3000 pound truck. I switched it back to the variable compressor and it was back to normal. u can't feel any clutch engagement except for the initial engagement and when it disengages.
0-60 in like 12 sec lol
I removed my old valve and replaced with a new one, and the car is only blowing real cold when the engine is around 2500 rpm, but not at idle. I am wondering if the new valve is not working properly. Is there some kind of 'bench test' for this valve?
Also, the old valve had a substance on it that was 'blackish' and a bit tacky. Should I have wiped out the valve port on the compressor, or oiled the new valve? What would that substance be, and does it affect the valve, or the compressor's functioning?
The compressor is gone... Change the compressor
Valve failure is very common, but usually something causes it (sometimes it just fails), in your case the compressor seems to be damaged, usually poor lubrication is the case. The oil must be clean and clear, otherwise the anti-friction material is falling apart and the compressor is permanently damaged.
@@tanzaniacarschannel6975 Yes, I will put a new compressor in, a soon as out Michigan weather warms up..
@@elpatosilvagreat appreciation while stumbling through learning this system with experts that appreciate any expectation of being spoonfed. Troubleshooting is the same in all systems. It seems that you will never know a realistic solution if one does not understand the system and has an expectation of the direction of fire for the parts cannon.
Reminds me of the go to... What "part" do you need to change when you fuel light is on.
My Volkswagen has the clutch less variable displacement a/c compressor. However, my Lexus has the Clutch design variable displacement system. When turning on, you will here the clutch engage and that is it. The only time to make it disengage is turning the entire climate control system off. During operation the compressor is always engage, which leads me to believe it’s variable displacement.
Looks exactly like a Sanden scroll until the head and variable valve are seen.
Kinda reminds me of the Mazda rotary engine
do they use those compressors on the f 150's
no you have a standard FS-20
FordTechMakuloco o ok
ok
What weight oil goes in there?
PAG 46
because the one on mine looks simalar