How to Diagnose Problems With Your Cars AC System - With or Without an A/C Manifold Gauge Set

How do I fix my cars ac, how to fix a cars a/c system, how to fix an a/c that blows warm air, how to fix an a/c that doesn't blow cool, how does an ac system work, how to find out which part of the a/c system needs to be replaced, how do I know if my a/c compressor is bad, how do I know if my ac condenser is bad, how do I know if my receiver drier is bad, how do I know if my expansion valve orifice tube is bad, how do I know if my evaporator is clogged, how do I use an a/c manifold gauge set, how does an a/c manifold gauge set work.

Where you can buy the tools in the Video:

Related Video's:

How to Safely Add Refrigerant to Your A/C System:

Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.

[SouthMainAuto]

Coming from another mechanic I feel that you did a wonderful job continuing on with this series on A/C system and there basic function and diagnosis. You are a good teacher and do a fine job at explaining what you are doing in each step. Thanks for sharing you knowledge and taking the time to make videos. I also shot u a PM when you get a chance. Keep up the good work!

[neomatrixfree]

I have just watched three or four of these videos, and I now feel more than up for the challenge of repairing my own AC on three of my vehicles. You have probably saved me $2, 000 in repair costs. One estimate was $1500 JUST for one van! Thanks again! Highly recommended!

[neomatrixfree]

Clearly, You have a teaching gift! Thank you. I have always feared to work on the AC system. You have made it comprehensible! Excellent. Those who put negative feedback are small minded and ignorant! Ignore them! Great job, highly recommend all your videos!

[MichaelBorne-rhco]

Ok. Here's my deal. Hope you can suggest some things, shed some light or/and tell me what to check next? Recovered system's freon with MY recovery machine, refilled w R134a from MY tank(w my scales, so was dead on weight accurate) and it worked for 2 summers now. This year, air is not getting cold, again! Sux! Summers a comin!
Here's a little info;
Initial Diagnostics test readings: Low side- 45psi (+ or - 2 to 4 psi as fan cuts on and off)
High Side- 160-175psi (again, + or -)
Temps: High side line- Compressor to condenser-140-160f
High side line- Condenser to receiver dryer- 125-135f
System uses exp. valve, not orifice tube
It's the crappy 2000 sebring conv JXi, 2.5L
Appreciate your videos! Love to see what you think/things you would do! Thx!

[markleng]

You turned a relatively complicated subject into an easy to understand video. Good job and thank you!

[lockmat]

Thanks so much for your clear explanations and showing us the real parts, tubes, valves etc. You're definitely worth following so I can come back and watch more videos. One suggestion I might make is to actually touch or grab the part you're pointing out since pointing is less precise and we can't always tell what you're pointing at. Thanks!!!

[jiggaalways]

very well explained. I am a mechanic and have been for 20 years yet could not have explained it any better!

[thehealer]

Thank you again for your great advice! I have a 2001 Dodge Durango, with over 238, 000 miles on it, that is still on the road due to your automotive tutorials!

[holoxfauxfecs]

OMG! I just love it when I google a video on how to do something and it's on this guys channel. He does a great job! Thank you!

[timchad]

This is the best video ever, been swapping parts on my a/c system, if i would have seen this first it would have saved me so much money and time.

[johndaniels]

one of the best Demo's I've come across, many thanks from Australia

[deejay-ehjd]

Thanks for this great tutorial and all you other videos. What do you think is the problem in the AC system when the following symptom occurs?
* When AC compressor clutch is not engaged, the LP is at 45 PSIG and the HP is 0 PSIG, and when the AC compressor clutch is engaged both the LP and HP are at 0 PSIG. Thank you so much for your help.

[steverayrapp]

Most chain parts stores have a "loan-a-tool" program where you can put a deposit down for the (gauges, vacuum pump) tool. I don't know if you touched on cars older than 95 came with R-12 which is becoming hard to find. If the AC system is opened for any reason, it MUST be vacuumed down to check for leaks and to remove all moisture from the system or you'll have problems down the line. Great video by the way.

[anichetv]

Please note that the infrared temp gadgets capture temperature from a much broader area than the laser point. It gets broader as the distance from the target increases. Laser point is just there to show a general direction. I have seen many people making the same mistake.

[roadshowautosports]

Very nicely explained! You just made a complicated thing uncomplicated!!! My Lincoln Towncar had the engaging/disengaging syndrome right now and i tried to add some Freon to it using one of those cans with a gauge in it but it keeps going all the way to touch the red area and coming back to the empty area so it wasn’t too helpful. While filling it up, the gas stopped going in and started leaking from the hose attached to the can. I also noticed that there was compressor oil on both the low and the high pressure connectors. If there’s a shortcut, please, don’t be shy! Lol.
I noticed my ac want cooling enough a couple weeks ago but won’t go to a shop because they are very Disonest down here in Florida so I’m trying to figure it out what’s going on.
Thank so much for your kindness and wish you all the best!

[CK-oznn]

Good video man! I've been in the business for over 10 years and this video sure lays down the basics well and gave me a nice refresher as well. Thanks for your efforts!

[mirzamazzy]

can you make a detailed video on expansion valve.

[anatoliytrofimenko]

Ps. Infrared thermometer measures temperature in cone shape. Farther you get bigger circle gets. Laser dot just for reference only. But thanks for info it worth a lot.

[DruJC]

This has been the most helpful video I've found trying figure out what's wrong with my ac unit. A complete diagnosis, step-by-step. Thank you

[eternalexplorer]

Very informative segment which explained why I was getting Same reading on both high and low side even after replacing the Orifice tube. now out to hunt for a compressor for my Trailblazer, thumbs up and thank you.