How To Fix Car AC - AC Pressure Switch P0530 P0531 P0532 P0533 P0534 P0745 P0746 P0747 P0748 P0749

[@frankierodriguez5620]

THANK YOU SIR! Gentlemen like you that take the time to make these videos are responsible for saving people like me thousands of dollars in costly repairs.

[@proclaimliberty2000]

👍😊 I’m posting another video on AC pressure switches this Saturday.

[@teddigpaul2046]

Oooo

[@hookinsnook]

I did the bypass to the pressure switch and the compressor still wont work. any suggestions?

[@rickkstir]

@@hookinsnook replace it

[@Edi-01]

@@teddigpaul2046I can’t translate the word oooooooo

[@sunilayya8948]

Faultless explanation . You make a fantastic teacher. Thank you for a fine effort.

[@proclaimliberty2000]

👍😊

[@equaltemp7075]

FANTASTIC INSTRUCTIONAL VIDEO!!. Without question, one of the best I've seen. Very clear, detailed, unambiguous, and easy to comprehend. Thank you.

[@davebenz8271]

Paul, You are a master at explaining. Thank you.

[@superdave7241]

Anybody notice that he looks a lot like Red Forman from that 70's show??? I'm just sayin'! Great video!

[@terryfoster3460]

Great job! God bless you!

[@dannyhampton711]

Thanks from all of us DIY guys out here. We really appreciate your time spent and info!!

[@proclaimliberty2000]

👍😊

[@crbourret]

I'm assuming that we are making sure there is actual pressure in the system first before performing this test because the compressor may not be turning because the pressure has dropped due to a leak. I think it would be bad to force the compressor to run if it was out of refrigerant. Maybe I missed that part.

[@giovanimartinez9727]

You just save me 300$ on a/c compressor I really appreciate you! Thank you 🙏!!!! Got it fixed!!

[@8216.]

Wow thank you so much so simple you explain it they should be more teachers like you thank you again

[@proclaimliberty2000]

👍😊

[@u.s.a.198]

You are the best... I've dome my own auto work for 40 years but wasn't sure about this. Ty

[@rudymunoz901]

Your videos brother are always very thorough thank you for taking the time to make them and share them. God bless

[@tflattery77]

How to change oil on a Honda EU2000 generator

[@rondean3775]

Great video ! My 2002 ford ranger ac clutch is not ingaging so this video will 100% help me with trouble shooting the system. I've checked the relay and fuse so this is my next step. 4 👍 up thank you!

[@arcadesunday4592]

Very clear message, and well caught on video. You make it very easy to troubleshoot a pressure switch issue !

[@proclaimliberty2000]

👍😊 Thanks!

[@declansgamereview6523]

Thank you and god bless ( 2 different shops changed my gas, checked for leaks, replaced the condensor and lastly replaced the aircon pump from a scrapped car and I still got issues. There was a leak that was visible but I think they did all the other stuff for nothing. I just unplugged the AC pressure switch connector and the ac works fine ( will try to get a swtich from a wrecked car as the ac has cost me way too much already )

[@proclaimliberty2000]

You might be surprised how cheap a brand new OEM AC pressure switch is on eBay.

[@ryans413]

Just to clarify how this works the PCM looks to receive a signal from the pressure switch if it doesn’t receive that signal it won’t energize the clutch relay to turn on the compressor. When you hit the AC button that just completes the single to the AC compressor relay to be energized and turn on the compressor. The PCM will also command the cooling fans under the hood to come on full blast when the AC is on

[@stevemccauley5734]

Except on a 2 wire pressure switch.

[@rclarke2456]

Thank you for your help it was plain and simple understand every bit of it

[@mohammadbenattia9102]

thank you so much, very well explained, very well illustrated video as ever, good luck

[@proclaimliberty2000]

👍😊

[@jillregal4532]

Very very good video

[@robertmacduff5289]

Hi thank you for showing us that my ac compressor goes on and off every 5 seconds on my Ford mondeo I have a 4 pin on my ac high pressure so I will try and do what you showed us. And is there a chance that it could short out anything before trying the wire testing?

[@Soflotony]

Great video. Can you damage Computer inputs shorting these connections together ?

[@gregsmith7391]

So clearly explained. Thank you.

[@proclaimliberty2000]

👍😊

[@CJ.A-C]

first class from CJ in LONDON

[@Goda00100]

Great teaching. Thank you.

[@proclaimliberty2000]

👍😊

[@FatalDaze]

Thought he was the dad from "That 70's Show" LOL/ Thanks for the video

[@joemeza8362]

Red Foreman ... hahahaha

[@julitoguwop]

“And this is how you fix it dumb*ss” should be his exit like. 😂

[@noemercy75]

I thought he was Red too lol

[@SpecialStealth]

Great educational video thank you so much. I have an intermittent compressor engagement .hence it cools for a while and then it goes away. Chevy Blazer 2009. I appreciate any advice. Kind regards

[@proclaimliberty2000]

kzbin.info/www/bejne/eKiTg6CDfbyFirc

[@rodrigogar]

i just found this video this weekend as I am having A/C issues. THANK YOU FOR THE CONTENT! On my car, Toyota Yaris 2007, I tested for continuity on the pressure switch and there was none. Now I wanted to try to put a wire in the connection openings but decided to get a volt reading first. When using the multimeter I get close to a 5v reading and not the 12v reading... Would this affect how the pressure switch works? SHould I still try to put the wire and see if the compressor engages? Thanks!

[@proclaimliberty2000]

Try to engage the compressor with the wire.

[@jeanmarcPrizzon]

Hello Paul, thank you very much for sharing your knowledge. If we measure a voltage of 12 volts at the terminals of the compressor when the A/C is ON, and that this one does not turn, can I consider that the pressure switches are ok? My DELPHI diagnostic tool mentions no problem with these pressure switches. So I ordered a new compressor. Bonjour Paul, merci beaucoup pour vos partages de connaissances. Si nous mesurons une tension de 12volts aux bornes du compresseur lorsque l' A/C est ON, et que celui -ci ne tourne pas, puis-je considérer que les pressostats sont ok ? Mon outil de diagnostique DELPHI ne mentionne aucun problème avec ces pressostats. J'ai donc commandé un nouveau compresseur.

[@conservativesniperhunter7439]

Very informative , thank you 🙏.

[@proclaimliberty2000]

👍😊

[@drummmer05]

L.P. switch on a trailblazer is easy to replace... has an auto. seal when taken out... DOES The High Press.' Side on the compressor "Also" have that seal when u take it out...? or will it spray refrigerant out ???

[@napoleonbridget8362]

My ac quit working driving home, worked perfectly before. I replaced the compressor could not get clutch to engage preventing the freon to load. I replaced the low pressure switch still can't load freon. Car is completely stock and very well maintained. Checked the wiring pigtail on compressor, not getting power to harness.

[@gilmargiron9171]

You can become a very Rich person if you teach how to speak English. To non English speakers people... You got the tools needed for become an English Professor...

[@joephillips8817]

Wow last summer i had nearly cooked myself well done during the heatwave... Had attempted to troubleshoot why my ac wasnt choochin. And just survived with occasional bags of ice filled from the local soda fountains.. I found this video seeing as its nearly that time of year again. An low.. pressr~ And behold! My clutch does engage!! 😂📎 lol Thankyou for your clear and concise video! Subscribed. Now hopefully not long before im feeling 🏂🍦🎅🎄 would this general function or circuit of the engine possibly correlate with other mysterious rough running and heating factors? Even if i drove. With ac turned off?

[@broomad]

Excellent video - very comprehensive and practical :-)

[@proclaimliberty2000]

👍😊

[@TheWittmannoo7]

Fantastic video , thank you .

[@proclaimliberty2000]

👍😊

[@astro49]

Our Audi A4 B6 has a 3 pin connector on its pressure sensor mounted on the side of the condenser. Pin 1 voltage measured is 12.2vdc. While on another pin is 11.5vdc. Query pls which pin do we jump together? We're apprehensive jumping the wrong pin because ecu might get damaged. Thanks in advance and congrats for a great tutorial.

[@erwinvandixhoorn9668]

Maybe it is too late now, but please be aware there are pressure SWITCHES and pressure SENSORS. A switch works as explained in this video. A sensor works with a PWM signal (pulse width signal), which is a digital signal representing a pressure value. Your ECU translates this value into a airco system pressure (high side). Shorting a connection in a system using a sensor instead of a switch may brick the ECU. Pretty sure your A6 uses a sensor, so please take care!

[@wilsonchipato1939]

well explained and on point👏

[@fishstix2620]

So I have a 2008 dodge nitro that has all been replaced except the evaporator. I had to put in some freon to the right specs and now the clutch won't kick off. High pressure switch?

[@gwheyduke]

good info, thanks for posting

[@MRAFHD]

Hello I wonder if for a VUE 2008, has only one pressure switch located on the manifold of the compressor, If can be removed/replaced without the risk of gas leak?...

[@Bailynagy]

2008 Honda Civic. Three pin on high pressure switch. Can you tell me which two to place the wire on to jump the Compressor?

[@adailfrancis]

Hello I have a 2010 toyota yaris do I need to remove the refrigerant to replace the compressor switch ?

[@radicalttc]

Great video. Thank you. GOD BLESS

[@zahirshahmuhammadzai2238]

Is it possible to replace switch without wasting the gas /coolant

[@mattmew4299]

I got a question if I bypass the pressure switch and I don’t know which an it’s got a 3 connection or 4 and I bypass wire ends on wrong one can I fry computer or cause problems

[@christroiano5045]

I think if you use a fused jumper wire, you should be fine because if you jumper the wrong pins, the fuse will just pop.

[@milbrooke]

How can these clutch cycle switches operate the a/c without a computer (PCM)?

[@dougm1985]

my 2013 toyota corolla doesn't have a clutch. my problem is i get no cold air , or it works. when it does work ,it gives great cold air. i usually drive 10 to 15 with the a/c on. warm or hot air blowing. then for no reason i can find it starts to blow cold air and will work until the car is shut off. any answers for why that is happening. i did bring it to a repair shop, he said to replace the compressor at $1100.

[@Religionisascam962]

I need help please because heat is killing me. Toyota Corolla 2018 only cools on below 80 degrees weather and I noticed if i put off the ac, the clutch still stay on. Will changing the switch help or the entire compressor?

[@u.s.a.198]

Great video and pics... ty

[@kevinpoveromo6324]

I by passed the low pressure switch .It seemed to work fore a bit ,but the the enegine stollled and the ck engine like came on. The rouge did restart after a few tries .I had to disconnect the battery to reset the ck engune light .Any idea what happened.?

[@scrajet]

Very well done 👏 thank you

[@ChuckZeppelin]

I'm not seeing any voltage at the connector. What's up with that? Also, if you do have voltage across two of the pins and you try the bypass wire trick, won't that be a direct short and blow a fuse?

[@wfidrock]

Exactly what I was going to comment after seeing this, you are 100% correct! DO NOT just blindly jumper across all the terminals as he suggests in this video because if you jumper the +12V pin (or in some vehicles these days +5V) to the Ground pin you could cause a short circuit of this voltage and blow a fuse... The pin that you measured +12V or +5V (or some other positive voltage) during the first part of the test (and some vehicles may require the key in the 'Run' position to get the voltage) should be excluded from this 'jumpering'. Also, some newer vehicles (like Honda CR-V for example) are going to designs that have a single A/C pressure sensor (instead of a high-side and a low-side sensor) and these have a variable voltage output (3 pins, +5V in, Ground, and signal out) which varies based on pressure. The computer then monitors the voltage out and can compute the A/C line pressure based on the voltage and determine if the pressure is either too high or too low (or Ok) and turn the compressor off/on accordingly. For these systems this 'jumpering' technique does not apply.

[@kristenewilson2475]

Yes, the guy has no idea what he is talking about. See my explanation that I posted

[@c00lreviews10]

The mechanic at the shop told me to get A/C Pressure Switch, but now I come in here and find out that there is high and low switch. Does that makes difference if get high side pressure switch or one that just says A/C Pressure switch or not. (Im gathering this information for my dad).

[@proclaimliberty2000]

Ask the mechanic if you need the high or low pressure switch.. Yes it makes a big difference replacing the correct one. I can’t believe the mechanic didn’t specify which one.

[@N8904V]

Good video...

[@Abdullah-hc1cz]

if i connect wrong pin,is it will cause a damage to the ecu???

[@siralleycat9141]

As he demonstrated at the start of the video, one pin is hot, the other is ground. Jumping these two could either damage the ECU or blow a fuse.

[@Joker-29th]

Great 👍

[@oussamachokri28]

مرحبا شكرا على الفديو هل ممكن مساعدة في كيفية فحص حساس ضغط المكيف في سيارة مرسيدس w203 أنا خائف من أن أتلف ذاكرة السيارة

[@ondrevassell1363]

Thanks God bless you

[@carlosbanegas7577]

thank very much

[@carlosbanegas7577]

thank you very much

[@rogermajantim5699]

GOD bless u.... Bro.. "

[@proclaimliberty2000]

👍😊

[@luke2042]

Paul I did this test and bypassed the high pressure switch and the ac compressor started to work. The high pressure switch must be bad. How do I know if I need to drain the ac system now?

[@alimabrahim4462]

thank you so much my 2010 Mazda WL 2,5 engine ac compressor clutch turn continuously cools great why is it not cycling on and of

[@samaelmartinus3273]

I checked my switch and it started then quickly stopped.( the clutch) It did that 4 or 5 times and then it doesn't kick in any more. Any ideas if this matters or not and do you have the part number. Toyota wants 200 + dollars

[@shihabudheenvp8582]

Thanks brooo👍👍👍

[@proclaimliberty2000]

👍😊

[@joesmith6524]

great video!

[@danielcastro8012]

I tried this and didn't work, all the fuses and relay are fine. I replaced the expansion valve and accumulator and tried to refill with freon but it won't even take 1/4 of the can till the low side reads above 50psi....what could be the issue???

[@phillippardo5712]

Same exact issue here! Did you ever find what your problem was??

[@danielcastro8012]

@@phillippardo5712 Yeah it was the actual AC compressor.

[@phillippardo5712]

@@danielcastro8012 good to know thank you. One more question, were you still getting cold air from time to time with the bad ac compressor? If you don't mind, can you explain your symptoms a little before replacing the compressor?

[@danielcastro8012]

@@phillippardo5712 it took a while before it completely stopped working but yes, it would still blow somewhat cold air. That was really the only symptom, it wouldn't blow cold air like it used to.

[@ernestomaldonado5057]

Excellent thanks 😊

[@johnsutter1497]

Can you do a continuity test on the switch?

[@proclaimliberty2000]

Yes

[@JoseChavez-ql8oi]

great video thanks

[@zaviarthompson8590]

thank you so much. .

[@larsenation]

Hi! I just recharged my AC system from the Honda ASC. Now, though the cooling is good, I could witness AC clutch frequently engaging ON/OFF at intervals of 8-10seconds roughly. My set AC temperature was 25C. Any suggestions?

[@JJ-yz1bq]

To much refrigerant causes this.

[@bennyflores1015]

Hello y don't my 98 dodge 1500 p.u. ac.vents blow air but window air works the defrost area hot n cold yyy plz. Help

[@besmirlule3608]

very useful !!

[@jeanlucvandebroek8010]

Very clear thanks

[@proclaimliberty2000]

👍😊

[@buster89ish]

I have a 2008 chevy colorado ls n I can't find the low side ac pressure switch 😫

[@charlesford3754]

hi can i use your video for training

[@proclaimliberty2000]

Yes, that would be perfectly fine.

[@charlesford3754]

@@proclaimliberty2000 thanks

[@2084046216]

Thank you .....🤗

[@proclaimliberty2000]

👍😊

[@oliverfox2078]

Haven’t watch yet but I thought you were Kurtwood smith from that 70s show and the villain in robocop 😂

[@pacheco464]

How to know if accumulator it’s good?

[@Platinumtag]

If your ac nothing working could be pressure need to adjust as well.

[@proclaimliberty2000]

👍😊

[@lowhombre]

Where do I start if my cars AC doesn't get cold?

[@proclaimliberty2000]

First check to make sure the system has refrigerant.

[@juanchopanzaz3947]

good video

[@proclaimliberty2000]

👍😊

[@stanleysiczek9526]

I think video your there..... Well it don't get no better than that I hope see more very professional

[@javierochoa432]

How did u get the codes ?

[@saquality7078]

Sir, my car ac some time worked and some time didn't work, I have cahange the compresser but the same situation, what are the possibilities of this problem, please respond

[@proclaimliberty2000]

kzbin.info/www/bejne/fWK6g4qBdq95ZsU

[@mikareinholm337]

My kontakt was on 4,5volt. What is wrong?

[@dhillonsaab1413]

Thanks sir

[@proclaimliberty2000]

👍😊

[@mckoylach1622]

Great video. However,how do you know if your pressure switch has a safety valve built in it,prior your removal? Thanks

[@ryans413]

I believe it dose it be stupid to have to evacuate the whole system to change a sensor

[@mikareinholm337]

What if + on - ?? Thanks

[@GBPLVR]

Great video! I'm not very mechanical and I can't find the A/C pressure switch on my 2010 Chevrolet Cobalt but that's what the repair shop said it needs replaced and they want to charge me $300.00 to do it. I would rather save money and do it myself if I knew where the switch is. Any idea where it is on my vehicle? I Google the part and it costs about $30.00 but the repair shop says it cost $103.00? Please help🤷🏻‍♂️

[@flitemedic55]

That’s a repair shop taking advantage of your lack of mechanical aptitude…if you’re not familiar with a disciple; find someone who is and take them with you

[@Nexos589]

My voltage is only 5v, on pressure switch is that ok?

[@ryans413]

Yes that be the signal wire to the pcm you should also have 12 volts to power the sensor and 5 volts to the pcm and a ground wire

[@MrFujiDriver]

what if it shows 4.8 volts?

[@saquality7078]

Nice

[@johnhenry3820]

What if ac compressor fuse keeps blowing?

[@stevejette2329]

John - Short somewhere ?

[@johnhenry3820]

I figured that, but how do I fix a short?

[@tetsudoyle4561]

I bypass the pressure switch but the engine shots off

[@totbob8947]

Thank you do much in the case of switch with three contacts there is new technology work by PWM pulse width modulation and in this case the bypass is not right way to test it

[@robertbrandman4218]

0pp7

[@christionprice5944]

*on

[@prabithkukku4634]

This will damage toyota control panel

[@jimc12]

What would cause the fan to excessively run for long periods, 30min or longer. Seems like the hotter it is outside the worse it is, it almost never shuts off in temps above 80°. In cooler temps below 70° it will run for long periods, but eventually shut off. The fan will also shut off immediately when I turn the AC off. It does all of this no matter if I’m driving or parked.

[@gavinconley5621]

No matter what your fans are going to run if the A/C is on its pulling air in to go through the condenser to cool the air. It’s normal for the fans to run if the A/C is on

[@ziauddin7948]

👍👍# 🇵🇰

[@johnnyfonk999]

I tried that shit and it made my car turn off