This was awesome information. Thank you! I had a empty system and needed to bypass the relay to run the pump. Once it was charged the system worked as usual.
Mines is a really weird situation but thankfully it works if I keep trying hard enough and spamming the Max A/C every 30 seconds. Car likes to rev/show signs of jolting electricity like car sometimes shuddering when fan comes on. The car keeps tweaking trying to power on the AC compressor but once it locks it in and keeps the compressor spinning it’ll stay like that even while driving unless it randomly feels like it wants to stop spinning. Usually playing loud music helps sometimes , not sure if it’s the relay because I switched it out before and it made it a bit more responsive but still have to trial and error the AC. The PCM has gotten wet before from radiator damage and was changed while also sprayed down with electronic cleaner. It really could be an electrical gremlin problem but I’ll see about the relay once more see if it’ll turn on my AC compressor on command. If that isn’t it I’m just gonna chalk it up as a battery/alternator issue, pcm issue (cars been running like a top only problem is AC and random revving a couple times a week) or bad relays or compressor. 🤷♂️ TLDR; Can’t make AC blow cold on command but will work when it wants to. Spamming Off to MAX A/C will sometimes make it “catch” so compressor will begin spinning and sometimes stay that way until turns back off randomly or turning off car. Loud music and charging phone with a little bit of luck sometimes helps to trigger compressor but not always sometimes it’ll start spinning on its own without any electronics like music.
2005 Mustang GT AC turns on but always HOT air only after replacing my Radiator. used a recharge bottle from WaL-Mart, Don’t know if I should use more Bottles or check FUSES/Compressor fittings.. my thoughts are that something is loose because it used to blow great.
I just replaced all the major AC components on my 05. New collected and compressor. Ac was working great for the day blew 50 degrees below ambient on the way home. But when I turned the ac off the blower wouldn’t come back on. I drove the car again and when I started the car with the ac on it fired right up. But the next day the blower was working fine. I turned the ac on and off many times and it would blow but now the ac compressor isn’t working. I’m gonna check that relay again but I find it odd that now it’s not working but the blower was fine
Thanks for the info but you didn’t mention the AC diode! If this is bad will the relay not send power to the compressor? Ground and power good at all pins but no power to the white pin to compressor but when I hot wire the white pin the compressor kicks on.
my 06 compressor would cycle on and off with the reading being 40 psi on the low side, i emptied it and refilled to 30 psi as i read on some forums. now my compressor isnt engaging anymore, would i need to refill it even more? thanks
Would you happen to know what would cause a Mustangs heat/AC fan to spontaneously turn on by itself? Mine turns on for a few seconds randomly on its own, then turns off. (Not sure if it's heat or AC because there's not enough time to feel it.)
Hi I'm trying to work on a 2006 lincoln LS v8. I'm trying to bypass and start the compressor. How do I know which terminals to jump? It's a f57b-14b192-aa relay.
Awesome video! Thanks for the info! Would you happen to know if there's a Schrader valve behind that high pressure switch (transducer) that you pointed out?
There is; I replaced mine a couple of weeks ago. When in doubt, check the side of the transducer/switch opposite the pigtail, i.e., the part that screws into the valve. You'll see the tiny post in the opening, that presses onto the schrader valve's plunger.
I have a 2006 mustang GT I just went in the store my AC was on and when I came out of the store and started my car the blower is not working at any speed any suggestions
I have a 2006 mustang GT blower is not working at any setting all of a sudden I bought this car brand new and And keep it inside Not sure what’s wrong I’ve replaced the resistor assembly and still nothing any suggestions?
Great video! Do you have any advice (possibly another video) on what to do if your A/C clutch will not disengage? My sometimes gets stuck engaged, even when I turn off the A/C. I have been researching and I think it is the low pressure switch, but not 100% sure. I temporarily removed the A/C clutch relay to prevent the system from building too much pressure.
From studying the wiring diagram, I see no possible way a failing pressure sensor can cause the ac compressor to engage.. If the compressor clutch is engaged, you will want to see if it is recieving voltage from the relay. The easiest way to check this is to remove the relay and see if the compressor clutch disengages. If upon removing the relay, the clutch disengages, and assuming the relay is good, then we can assume that the powertrain control module is commanding that the ac relay engage. This could be the result of a failing PCM, a short in a wiring harness or a malfunctioning climate control module that is erroneously requesting the PCM to turn on the AC.
Could you make a video of fuse 47, mine keeps blowing and I’m not sure why I have tried to disconnect ac clutch relay but 47 blows right as ignition has been turned on not even cranked.
I am having a serious issue with my 2008 GT. The Blower Motor Relay, the socket that it goes into, for some reason is really loose... the relay doesn't fit snug in there, and my blower motor doesn't go on. A solution I found, is if I bend the prongs slightly on the relay it fits tighter in there securing the connection and it starts to work... the problem is.... for some reason, it ends up blowing/burning... I've gone through 3 of these relays.... the first one blew when I adjust my lumbar support on my seat, the second time it just randomly went out after a while, as well for the third time. Another thing is when I inspect the 3 relays, they have a burn mark on ONLY one prong and on different numbers... the one that just recently went out has a burn mark on the prong labeled as 87. Other times it was 30. IF you have any ideas or suggestions, please let me know! Without the blower motor being powered, I get no air.... and its HOT out!
i have a question on this. i have an 05 mustang & my compressor cuts on and off every few seconds... not sure why.. i dont think im leaking freon.. also my ac only works partly but when it does it kicks out hot air. what could this be?
turns out mine had a messed up computer (pcm/ecu) - this fixed that and made the car run much smoother. i had a check engine light on as well. That went away immediately. I would check the blower motor before taking it that far though. if that didnt fix it, then id check your compressor to be sure that’s working properly.. (which sounds like it is but be sure) THEN go to the ecu. my ac blew colder that it ever has and i havent had a problem since i changed the computer. hope this helps
Same problem here as well. Cuts on and off. Just had it charged to the full 26 ozs when I realized the clutch engaging for a few seconds and then disengage. Any one have a pinpoint test for this? I hope its not my computer lol
Trying my luck here. I have proper charge on my AC system and a new compressor. Replaced the compressor because I misdiagnosed the A/C clutch. Issue is clutch is not engaging even tho A/C system has proper charge. Bypassed the relay and compressor clutch engages and blows cold. Checked LP transducer with a volt and ohm meter no issues. Read some forums regarding problems with a WOT relay causing the compressor clutch to not engage. What are your thoughts also if you could link a wiring diagram and location for WOT relay.
@@lexheria there was a wire harnes pinched and grounding off on the engine block on top of the bellhousing. Blown fuse listed above was blown and traced it back to the pinched harness
Why does air only come out of my vents when I’m traveling…. I hit a a bump one day it came on ran just fine but a few miles later it’s off.. I hear clicking noise when I switch the control settings…. Please help me
What if you hear clicking on and off on and off it’s blowing cold air but when you have the device hooked up to it to measure how much you have in the system it goes from like 10 to 20 all the way up into the red zone, and then clicks back
@@LehewTech Hello sir, i also have the same problem. I replaced the compressor with a brand new one, it was engaging for a moment but turned off and on and i couldn't fill it with freon. I tried to bypass the pressure switch and now the compressor wont engage at all. I checked all the fuses and everything looks fine, it blows hot air and im still unable to refill with freon
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Great video! Thanks for putting this together.
Thank you! Saved me! God bless you!
Thanks man. Helpful stuff.
This was awesome information. Thank you! I had a empty system and needed to bypass the relay to run the pump. Once it was charged the system worked as usual.
Which pins did u use
Very helpful. Thanku
thanks for your help 😁👍
👍👍👍👍👍 your a smart man
Thank you!!! 🙏🙏
Lehew always knew what to do!!
Asome video bro new sudcritber
Mines is a really weird situation but thankfully it works if I keep trying hard enough and spamming the Max A/C every 30 seconds.
Car likes to rev/show signs of jolting electricity like car sometimes shuddering when fan comes on. The car keeps tweaking trying to power on the AC compressor but once it locks it in and keeps the compressor spinning it’ll stay like that even while driving unless it randomly feels like it wants to stop spinning. Usually playing loud music helps sometimes , not sure if it’s the relay because I switched it out before and it made it a bit more responsive but still have to trial and error the AC.
The PCM has gotten wet before from radiator damage and was changed while also sprayed down with electronic cleaner. It really could be an electrical gremlin problem but I’ll see about the relay once more see if it’ll turn on my AC compressor on command. If that isn’t it I’m just gonna chalk it up as a battery/alternator issue, pcm issue (cars been running like a top only problem is AC and random revving a couple times a week) or bad relays or compressor. 🤷♂️
TLDR; Can’t make AC blow cold on command but will work when it wants to. Spamming Off to MAX A/C will sometimes make it “catch” so compressor will begin spinning and sometimes stay that way until turns back off randomly or turning off car. Loud music and charging phone with a little bit of luck sometimes helps to trigger compressor but not always sometimes it’ll start spinning on its own without any electronics like music.
Thanks bro
2005 Mustang GT
AC turns on but always HOT air only after replacing my Radiator. used a recharge bottle from WaL-Mart,
Don’t know if I should use more Bottles or check FUSES/Compressor fittings.. my thoughts are that something is loose because it used to blow great.
Thanks Brother
I just replaced all the major AC components on my 05. New collected and compressor. Ac was working great for the day blew 50 degrees below ambient on the way home. But when I turned the ac off the blower wouldn’t come back on. I drove the car again and when I started the car with the ac on it fired right up. But the next day the blower was working fine. I turned the ac on and off many times and it would blow but now the ac compressor isn’t working. I’m gonna check that relay again but I find it odd that now it’s not working but the blower was fine
Did you ever find a fix?
Thanks for the info but you didn’t mention the AC diode! If this is bad will the relay not send power to the compressor? Ground and power good at all pins but no power to the white pin to compressor but when I hot wire the white pin the compressor kicks on.
So My ac words but the air only comes out for the defroster, any suggestions?
my 06 compressor would cycle on and off with the reading being 40 psi on the low side, i emptied it and refilled to 30 psi as i read on some forums. now my compressor isnt engaging anymore, would i need to refill it even more? thanks
Hi lehew can you explain the 2010 ford mustang AC relay ac fuses and circuit please
You're the BEEEESSSSTTT!!
Would you happen to know what would cause a Mustangs heat/AC fan to spontaneously turn on by itself? Mine turns on for a few seconds randomly on its own, then turns off. (Not sure if it's heat or AC because there's not enough time to feel it.)
Hi I'm trying to work on a 2006 lincoln LS v8. I'm trying to bypass and start the compressor. How do I know which terminals to jump? It's a f57b-14b192-aa relay.
My ac works sometimes,and then other days it won't blow any air through v3bts in any speed, and neither ac or heat
I have the same issue
@MrSofly2010 no idea what it could be? I installed relay,and new blower motor,and didn't fix issue.
How about resetting the ac actuators?
Fantastic but my problem right now is that the 1st fuse keeps blowing up even with the compressor disconnected
Can you Help?
Hey I got a ? My big fuse was bad I swapped it with the gi beam switch and it blew the 10 amp fuses what could cause that
Hello , which pins do I use to jump ac compressor
Awesome video! Thanks for the info! Would you happen to know if there's a Schrader valve behind that high pressure switch (transducer) that you pointed out?
There is; I replaced mine a couple of weeks ago. When in doubt, check the side of the transducer/switch opposite the pigtail, i.e., the part that screws into the valve. You'll see the tiny post in the opening, that presses onto the schrader valve's plunger.
Got a question ..why my ac work well when i filled but when leave the car off ..for hours ac dont work
What is the fix for the second fuze popping
I have a 2006 mustang GT I just went in the store my AC was on and when I came out of the store and started my car the blower is not working at any speed any suggestions
I have a 2006 mustang GT blower is not working at any setting all of a sudden I bought this car brand new and And keep it inside Not sure what’s wrong I’ve replaced the resistor assembly and still nothing any suggestions?
So i switched out the little fuses with new ones anyway and i mean it’s making a noise but no air yet
Great video! Do you have any advice (possibly another video) on what to do if your A/C clutch will not disengage? My sometimes gets stuck engaged, even when I turn off the A/C. I have been researching and I think it is the low pressure switch, but not 100% sure. I temporarily removed the A/C clutch relay to prevent the system from building too much pressure.
I would first suspect that the relay itself is failing.
@@LehewTech I thought the same thing. I swapped relays with another circuit which I confirmed was already working, but it still has the issue.
From studying the wiring diagram, I see no possible way a failing pressure sensor can cause the ac compressor to engage.. If the compressor clutch is engaged, you will want to see if it is recieving voltage from the relay. The easiest way to check this is to remove the relay and see if the compressor clutch disengages. If upon removing the relay, the clutch disengages, and assuming the relay is good, then we can assume that the powertrain control module is commanding that the ac relay engage. This could be the result of a failing PCM, a short in a wiring harness or a malfunctioning climate control module that is erroneously requesting the PCM to turn on the AC.
@@LehewTech thank you!
Could you make a video of fuse 47, mine keeps blowing and I’m not sure why I have tried to disconnect ac clutch relay but 47 blows right as ignition has been turned on not even cranked.
Same
Mines lasts for like 10 min then it blows
I am having a serious issue with my 2008 GT. The Blower Motor Relay, the socket that it goes into, for some reason is really loose... the relay doesn't fit snug in there, and my blower motor doesn't go on. A solution I found, is if I bend the prongs slightly on the relay it fits tighter in there securing the connection and it starts to work... the problem is.... for some reason, it ends up blowing/burning... I've gone through 3 of these relays.... the first one blew when I adjust my lumbar support on my seat, the second time it just randomly went out after a while, as well for the third time. Another thing is when I inspect the 3 relays, they have a burn mark on ONLY one prong and on different numbers... the one that just recently went out has a burn mark on the prong labeled as 87. Other times it was 30. IF you have any ideas or suggestions, please let me know! Without the blower motor being powered, I get no air.... and its HOT out!
I have this exact issues right now
Same here any idea how to fix it?
i have a question on this. i have an 05 mustang & my compressor cuts on and off every few seconds... not sure why.. i dont think im leaking freon.. also my ac only works partly but when it does it kicks out hot air. what could this be?
I would check the level of freon in the system
do you have any social media? id like to send you a video of what im hearing.
i’m currently having the same exact problem on my 05, let me know if you find something!
turns out mine had a messed up computer (pcm/ecu) - this fixed that and made the car run much smoother. i had a check engine light on as well. That went away immediately. I would check the blower motor before taking it that far though. if that didnt fix it, then id check your compressor to be sure that’s working properly.. (which sounds like it is but be sure) THEN go to the ecu. my ac blew colder that it ever has and i havent had a problem since i changed the computer. hope this helps
Same problem here as well. Cuts on and off. Just had it charged to the full 26 ozs when I realized the clutch engaging for a few seconds and then disengage. Any one have a pinpoint test for this? I hope its not my computer lol
Trying my luck here. I have proper charge on my AC system and a new compressor. Replaced the compressor because I misdiagnosed the A/C clutch. Issue is clutch is not engaging even tho A/C system has proper charge. Bypassed the relay and compressor clutch engages and blows cold. Checked LP transducer with a volt and ohm meter no issues. Read some forums regarding problems with a WOT relay causing the compressor clutch to not engage. What are your thoughts also if you could link a wiring diagram and location for WOT relay.
Did you find an answer to your problem?? I’m having the same exact problem
@@alnunez4695 pinched wire harness was the issue and the dead giveaway was a blown engine 1 fuse I believe.
@@alnunez4695 pinched wire harness was the issue and the dead giveaway was a blown engine 1 fuse I believe.
@@xavcar15 what you mean about that man if you could help I’m having the same issue
@@lexheria there was a wire harnes pinched and grounding off on the engine block on top of the bellhousing.
Blown fuse listed above was blown and traced it back to the pinched harness
What would cause the #49 15 watt to the relay keeps blowing?
In the video he points out the relays can get stuck open or closed. Give it a tap, see if that closes it to turn it off.
@@kickballjedi will do. Thank you
2007 mustang. Fuses and relays good and still no AC fan and windows don't work.
Why does air only come out of my vents when I’m traveling…. I hit a a bump one day it came on ran just fine but a few miles later it’s off.. I hear clicking noise when I switch the control settings…. Please help me
Try wiggling the connector at the blower motor
Did you get it? a clicking noise when you change the air setting might mean a broken blend door actuator
What if you hear clicking on and off on and off it’s blowing cold air but when you have the device hooked up to it to measure how much you have in the system it goes from like 10 to 20 all the way up into the red zone, and then clicks back
Man my system is charged and my fuses are all good but my compressor is still not engaging and it's hot in TX can you help me out with this
Is your check engine light on and is the compressor receiving power when the engine is running with the AC turned on? Is air coming out of the vents?
@@LehewTech Hello sir, i also have the same problem. I replaced the compressor with a brand new one, it was engaging for a moment but turned off and on and i couldn't fill it with freon. I tried to bypass the pressure switch and now the compressor wont engage at all. I checked all the fuses and everything looks fine, it blows hot air and im still unable to refill with freon
I know this is weird but is there anyway I could call you. I have a 2005 mustang and I just have a few questions
Send me an email lehewtech @ gmail com