Lesson # 14 : Learn How to Read Gauges.

How to read AC gauges / Normal AC pressures / Abnormal AC pressure reading.

[jimmypage]

Yes yes finally this is precisely what I was looking for. Well presented scenarios with excellent explanations with all the details on why when where to back it up. Thanks for taking the time to do this.

[dennisluong]

Wish I found this two days ago :(
The most detailed video on car’s hvac system.
My reading was
low: 80-90 psi
High: 150 psi
97 F degree ambient temp
Couldn’t find anything online about that reading
But this video explains it all

[Junosstudio]

I apreciate your videos .. ive learned quite a bit and still learning the basics of car air conditioning . Thank you for your videos!! Kudos!!!

[patrickliverpool]

Great video and information to a professional teacher. I have learnt so much from you. Thanks to you.

[yiucycle]

wish I saw your video first, probably one of the best video explaining the gauges. thanks

[Hotrodfink]

Great video and expert information. You are a wonderful teacher, thank you.

[gregregula]

Awesome video I've watched so many, you've done a great job in your explanations!

[elchacal]

Thank you for this video. Got my ac working on my old mans car and about to try my brothers bmw but needed more info!!

[jamiemitchell]

Great video and info. I've got good pressure readings when static and the low and high pressure readings are good when the compressor is running (100 psi on 100 degree day, and 35-40 on low, with 175-200 on the high side), but the compressor is short cycling. It will run for maybe ten seconds before it cuts off the clutch, then comes back on after about ten seconds again. The temps inside the car at the ducts are good when the compressor is running, but it doesn't run long enough for the interior temps to drop on a hot day. I'm not seeing the pressures go out of the above readings when it cuts off the clutch. The compressor and TXV have been recently replaced. Looking at the condenser, the temp at the inlet is about 150 degrees, but about two inches away it has dropped to about 130 degrees, and just then after another few inches, it is about 115 degrees. I was leaning towards replacing the condenser and dryer to ensure that I don't have an internal plug at either of them. Curious if you think this is a reasonable approach, or am I looking at it wrong. Thanks in advance for your help.

[wendywhales]

BRILLIANT mate.
Plain English.
No, bull shit.
.very well explained.
It's not complicated.
Down to earth explanation.
You are an excellent teacher..
I am impressed.

[rogerramirez]

Nice video. I have a 2004 chevy impala 3.8 v6 cold air comes out of the passenger side and regular fan air on the driver side and the heater does the exact same thing hot air on the passenger side and regular fan air on the driver side. No one can tell me what it could be. Took it to a couple of mechanics and they dont know. Hope you can give me a good place to start. Been dealing with this for a couple of years. Thank you in advance.

[christophercoburn]

I have installed a new compressor, drier insert, and expansion valve. The compressor is clutch-less. When the system was charged the low side went to about 65 and the high side only got to about 140. The air never blew cold. It was suggested that I might need a new condenser as well. There was a little over four ounces of oil in the new compressor and only one ounce in the old. So I split the difference and added two ounces back into the new compressor. Thanks for the great video

[paulthompson]

hi World Ford Ranger twin condenser
low side 25--35psi About 28psi is freezing point
high 150--160psi engine idling and engine at 1500rpm
All that on a 110 F day
B4 the 2nd condenser was fitted it was terrible at 290 psi high vents temps were 60F
R12 =R134a high pressures . Modern car makers use small condensers .
Old school R12 was 150--180psi always under all hot climates . Some industrial applications 100-150psi

[righteousman]

Wonderful lesson, thanks and God bless.

[texasslam]

Thank you for the great video!!! Problem I’m having low pressure side reading 100 high side reading 150. 09 Dodge Ram 1500. Condenser, compressor, expansion valve, and evap were replaced 6 months ago. Everything was working fine. About a month ago was not getting any cool air wile idling only when driving for longer periods. Then stopped working blowing cold all together. Condenser/Radiator electric fan went out I replaced it. Hooked gauges up and got these readings today. Any tips on where to start? THANK YOU

[r.curran]

Thanks for your time in making video. I found a lot of info to help with my problem.. Keep it up, Very good stuff..

[richardsmalley]

Helpfully video...well explained. Thank you.

[janddroadservice]

Great video and explanation. Thank You

[SteveP]

Very easy to follow. Wealth of information

[jakespeed]

The 2014 Silverado I’m working on in Orlando (late May) has abnormally high suction side(200psi)
High side normal at 150
Compressor running constantly