WHAT AC PRESSURE SWITCH DOES. AC NOT BLOWING COLD
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- Опубліковано 5 вер 2024
- WHAT AC PRESSURE SWITCH DOES. AC NOT BLOWING COLD
In this video we will explain what the A/C pressure switch is for and how a bad faulty AC pressure switch may cause your A/C Compressor from engaging and turning on. If the AC pressure switch is bad your A/C System will not blow cold air because the ac compressor will not turn on. The ac pressure switch tells the Engine Computer if there is enough pressure / freon in the system so the compressor can work without problems. In this video we will show you where usually the pressure switch is located and show you what it looks like.
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These guys never answer questions.
Just spammers... total BS
Borat recommended ..
😺👍👍
First off, love the channel, and your easy to understand repairs and methods. THANK YOU AND KEEP THEM COMING. My 2002 Merc Benz S430 (W220) A/C stopped working after I replaced the windshield wiper hose (with the heater wire/ cable inside). The unit small red light is on indicating the system works, but will not blow cold air. The clutch does engage, on then off, constantly. The typical reset feature/ trick doesn't work for whatever this error is currently. I checked the relays/ switched and replaced them as well. Assuming the system may have been low on refrigerant, I filled it with what it took in, which appeared to be almost two full "tall" cans of AC Pro. Reset the system and the air came on "absolutely freezing cold" for about two minutes then shut off again. After resetting and attempting to make it stay on, it wouldn't reset anymore after four attempts. I noticed a clear liquid had leaked from the bottom center of the car down the driveway to the rear of the car, no smell or color, but thicker than water.
The next day, with the engine running and the air refilled and reset once more, I heard a loud hissing and bursting flow of air or spray from under the hood, front drivers side for about 40 seconds then stopped. I believe it was a pressure relief vale of some sort !!! Scared the &%$#@^& %$#%^&%#@ out of me to be exact. The clutch still engages, on then off, constantly. Whats wrong with the cars AC ????? What would you recommend I check or replace???? No AC for the past four months now...
I diagnose the females car it would blow cold then hot the next day turned out to be the evaporator under the dash
You never tested the electrical continuity of the switch. Is it supposed to conduct current when it is working and the engine is off? Is there any measurable electrical resistance (ohms) in the switch when it is letting current flow through it?
There are 2 switches. 1 for the high side one for the low
Do you have a video showing a AC pressure switch on a 2008 5.7 jeep grand Cherokee??
How can I confirm whether it's a problem with the switch or the compressor itself? Please help!
If Kermit the frog was a mechanic!
The sensor on the skinny line or condenser is the high pressure sensor and the low pressure sensor will be either on the dryer, compressor or on the fat low pressure line itself. I've never seen a system with only 1 sensor like these guys are saying. The low pressure sensor is to keep the compressor from getting ruined due to low refrigerant and the high pressure sensor it so shut off the system for safety if the pressure goes to high.
Hi robert i had cadillac cts..i see this video but is a chevrolet..i. had the same problem i dont know where are them..my a/c stop working i check everything but no respond...
cheers for the info guys, just had the pressure switch replaced on my honda civic mk8, now i know what it does.
good Cheve ac pressure switch replacement # 👍
some cars have a compressor that is clutch less and they are very tricky to diagnose, I've known plenty of car ac and just a couple of years back learned about them and that's because I bought a Toyota Yaris.
Please I have a problem with my Camry 2008 v6 ac. The cool ac seizes from time to time . When it happens I turn it off and on again . Then I gets cool for 2 mins and seizes again .
Wondering is it’s an issue of the compressor sensor or Ac pressure switch , or expansion valve ? There’s no leakage . Please help
hi bro. thanks for making this video its helpful on this. love from Pakistan
Thank you ! I think you just helped me find my switch !!
Great video .
Please Help
2006 audi a8 4.2
When the a/c is turned on, hot air blows out of the vents for 5 minutes after which cool air then begins to blow out of the vents.
I used ac Gauges to see when ac compressor working . it take 6 minutes .after that it Blowing ice cold.
When ac compressor working the high side 170 low side 37psi
I changed the AC compressor solenoid to a new one but the problem is still.
The freon level was fine
No Fault Codes
Thank you
Can work ac without that sensor on cold
i need to how to test the sensor, which I think you can jump and it will kick in, but that's on a chevy
Hi can someone help me where is this sensor located on a 2010 mustang gt ? Thank you !
Thank you very helpful
Hallo, bei mir ist der Kondensator durch einen Steinschlag die Anlage komplett leer geworden. Wisst ihr wie viel Klimaöl bei solchen Beschädigungen verloren geht? Ich danke Ihnen im Voraus für eine Antwort.
Hello would you kindly help me. We bought a chevy sonic 2014, in February 2020 with 40k miles. Engine light is on and ac stop working. What seems to be a problem? I hope it is not worst as we do not have a budget for another car. Due to pandemic only one person is earning money for the family. Please...
I really love your videos, keep it up
With Chrysler vehicles, there are 2 pressure switches, high side and low side.
Every car has that 🤦♂️
@@alvarosilva957not every car
Thank you for this video
Where is the low pressure sensor on w211 2009 e350
Sir
After my car ac switch on rpm fluctuates and compressor not oning.
In my car, the coolant line literally rests on its pressure switch. So when I turn my cooling fan/AC on sometimes it causes the engine to rev up & down like crazy. I have the AC bypassed now with a shorter fan belt. I'm praying that if I swap the censor out it will fix my issues with it. Anyone every dealt with this? Any advice? Shitbox 2002 sunfire SE coupe vin 4
I have on a honda replaced. I replaced my pressure switch and made sure redrigant levels were good after and it fixed the rpm surge
That sensor causes your ac fan to run in high all the time.
most peoples would like this!
Dear, I have a Nissan y61 2019 when the car is idle (not moving) AC become less cold but when It moves usually AC works fine. How it can be solved? Does the condenser need to be replaced with bigger one
where do I find the ac pressure switch on a 2005 dodge ram truck?
I have a 1989 Lincoln Town Car that has been a nightmare on A/C issues.
My A/C shuts off on the highway, my fan shuts off when I select floor, & nothing comes out my defrost vent when I select defrost.
Could my low pressure switch be failing?
I just changed my check valve & Automatic Temperature Control Switch Servo.
There was no change.
Changed my blower motor resistor a couple years ago, so it's not that.
I'm out of options.
Do u have any idea what the problem may be?
Thanks in advance.
i can't find my pressure switch on my 2010 Hyundai tucson would it be in the same place the Elantra is?
Its on the low ac line
My Mercedes B180, year 2012 model.
Start up no AC. ONLY hot-air. But I found our if reverse the car and then on AC. It works very well and continue to work when driving. What is yes cause?
I have a 2014 Jeep Grand Cherokee and AC compressor keeps turning on and off. I evacuated the system and recharged it to proper pressure and still compressor turns on and off. I was thinking it's a high pressure switch. What do you think?
Either the low pressure sensor or high pressure sensor is probably faulty
@@Mike-sp2eu or the pressure is low
You are replacing hi switch, usually not for cycling, but safety switch in case of overpressure... wheres the lo side switch? In compressor?
Justin Potter on my Chevy truck, it is on the low pressure line near the firewall. It has a schrader valve so you can remove it without loosing your charge.
Valve stem thing = Schrader Valve
It is very helpful video keep it up sir👍💕
My ford fiesta 2007 aircon is running strange. It works normal on idle, very cold, no kicks on and off, 25psi pressure. But when i accelerate about 1500rpm, it starts to cycle on and off about 3-5 seconds repeatedly. I was looking for a solution? Could be bad low side pressure switch?
Bypass a relay and charge the system and drive around all day if your AC is fine then take away your bypass and put in your AC relay if it stops working there's a good chance that your high side all your little side pressure sensors it's no good start diagnosing the electrical
I have a scion tc and I can't find this sensor /switch anywhere I see the high pressure switch right in the front by radiator . Can I point me in the right direction Google isn't even helping with images of location thanks
If i remember correctly, that would he located on the accumulator on that vehicle.
ما وظيفة حساس ظغط المكيف
Can this switch function as both low/high pressure cutoff?
Thats what im thinking too
@@humbertohernandez2739 I found out there are two pressure devices, the switch only has two states, on or off, usually found on both high/low side, the sensor or transducer is variable, I only have one sensor on the high side.
@@metalhalide4043 same here, i changed it but still didn't work. My ac clutch didnt spin
@@humbertohernandez2739 Assuming you have enough pressure in system, did you check fuses and relays? Connections to the compressor? They can oxidize over time and not connect..disconnect and reconnect connector..
@@metalhalide4043 i did check relay but the compressor on my car is at the bottom and i dont have a jack and imma have to remove the mudguard
I have a 1999 Toyota solara..I put on a new compressor but I'm not getting no power to the compressor do you think it's the AC compressor switch?
Did u ever find out the problem because mine is doing the same thing
@@cmorecash5816 I found out that there's a switch that turns the compressor on but in order for the switch to turn on the compressor the compressor has to have freeon..if the there's no freeon the compressor won't turn on it's a safety switch so the compressor won't burn out due to no freeon..I sure didn't know this until I spoke to my mechanic..
@@trini_boi2414 😂😂😂 My boy so you put a new A/C compressor on and didn’t put any FREON 😂😂😂😂.
@@drillnation6779 the dude who was putting the Freon in didn't know what he was doing so I thought the compressor was getting Freon but it wasn't getting so that's why the switch didn't kicked on..who knows he probably didn't even open the can right so the Freon could get to the compressor 😂
My AC compressor is always getting voltage (clutch engaged), regardless of if I have the gauges ON or OFF inside the car. HELP!
TXP sounds like you have a stuck relay. Find it and replace it.
Had the same problem with a new relay that was stuck closed. Replaced it and now its not constantly on. Not on at all because im still trying to find why its not working properly
Hi, I have a Hyundai i20 and the problem is that the AC trips when we apply 2nd or 3rd Gear,but if car is idle its giving very good cooling without any tripping..when i drive in traffic continuously changing gears ,apply brakes harder or clutch..it trips off...But if i switched off the unit for 5 - 10 seconds and Turn it on again it starts working continuously. But if again i will apply break..it shut off...Please help ....
Yeah, I'm not watching anymore of your videos, bout blew out my speaker on my phone
Does the AC pressure switch activate the cooling condenser fan?
Yes
@@erlindapacheco8751 my fan starts at low speed for like 5 or 10 seconds. then stops for a couple of seconds and then starts again.. etc.
can this behavior be due to a bad high pressure switch? compressor clutch does not engage either.
Fan works great otherwise in a really hot weather days.. spins like crazy then :) so the fan is not bad, neither engine temperature sensor.
boratz
Wow you guys took the system apart and removed all of the Freon , along with adding a lot of work .. all you had to do is switch it out while everything on the car was connected.. If you would have checked first to see it can safely be removed while still on car , it would have cost the customer a few dollars only..You dropped the ball on this one fellows..
What would cause a ac to blow cold, then slowly start blowing hot
Leaks.faulty valve.weak compressor.u need to check the pressure on both sides to determine whats up
🐠
Hello sir. I am from Bangladesh. I want to learn car ac repair job from your team. Please give me a chance.
Давай на български че английският хич не ти върви
Cuk gak ngerti aku😂
Man I really like your videos but your 'R' is killing my ears, lol
whaaat?? (lil john's voice)
You are Arab o. Indian
Russian