AC dont work on 2003 to 2007 ACCORD could be FAULTY AC PRESSURE SWITCH
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- Опубликовано: 27 май 2022
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#acdontwork #acswitch #2003accordacswitch #2004accordacdontwork #2005accordacdontwork #2006accordacdontwork #acpressureswitch #2007accordacdontwork #2009accordacdontwork #jumpacswitch 
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THANK YOU for this video. Turns out my 2007 Honda Accord just needed a $44 relay to kickstart the AC compressor. Pretty sure the dealership would have tried to sell me a new compressor altogether for hundreds of $$$s, had I taken it there. So grateful for your diagnostics & bless you for this channel!
Good job !! Yeah they would had caused big repair there glad u did it urself
2007 Honda Accord low pressure side was way high. I whatched this video, center clutch wasn't spinning, the 7.5 fuse looked fine but he mentioned briefly to tap the relay so I did and the compressor kicked on and cold air like usual!!! $0.00 fix!!!
Nice !! Well that relay got to go!!! $45 from dealer $12 after market I would go with orignal
Just watched your video.
Popped the Fuse/Relay box and tapped that relay!
Boom! Compressor kicked on and cold air started blowing!
Gonna go get that high dollar relay!!
Thank you man!
Sincerely appreciate you saving me a ton of money!
Glad it helped!! Good job!!
Thank you brother, you saved me another day of frustration and some money to because i thought the clutch was bad
Welcome bro glad u found the issue
@@RBTheMechanichow do you replace the switch, do you have to splice on a new switch or can the entire thing be replaced?
Thank you for share this video! You help me a lot
Happy to help!!!
Bro thank you so much 😊 I’ve been at this for three months and it was just that
Nice glad u found the issue
I check my fuses , relays and this . I’m replacing my resistor in the glove box area next . Prayerfully it works
Resistor is for only fan speed
Very good info. But I have to admit your impatience with the AC control was making me scream at the screen. "JUST WAIT 10 SECONDS DUDE!"
lol ok
Damn man that was cool!! Thx
Yeah thanks
2005 honda accord bought with no ac. Filter had never been changed so changed it and went to swap the relay boom ac got the new relay and good to go. Thanks
Nice work!!!
Thank you thank you thank you!
Welcome
I have a 2010 Acura RL, switched out bot the AC relay and 40A fuse relating to the AC. For some dumb reason i replaced my cabin filter (it was dirty anyways). Low pressure is where it should be according to the manual. However it keeps blowing warm/hot air. It's about 95-100 F over here where I live so i can't tell the difference but it's not cold. Once I try jumping the switch, can I just pop connection back on the switch? Or if the compressor works, is that an indicator that I could have a bad switch and would have to service the whole thing and pump the freon out?
Why don’t u put the ac on and see if both radiator fans kick on that will indicate the system come on then u can check to see if ac compressor got power other wise u have to diagnose more could be bad pressure switch
Thanks 💜
You're welcome 😊
I'm not a mechanic, and I'm not crazy either but, I am confused.
1) What "pin" was pushed @4:21 - 4:24
2) is(n't) the compressor the inch to inch and a half belt that's turning? Or, is it the thin metal part on the side of the wide belt...because my wide belt is moving...and it moves weather the ac is on or off.
3) What were you doing with/to the copper part before you stuck it in the plug? Do you ride around with the copper in or, will it work from that point?
Thanks
The belt will always spin on compressor the clutch has to engage and grab the compressor to start pumping
thanks man i was about to buy a ac compressor
Oh cool glad u found my video
I've got a 200 Honda CRV and I'm trying to check the pressure switch, but it is extremely difficult to get to as-is. Am I going to have to jack my car up some and get in underneath? I noticed on your video you went in through the grill, but that seems like a lot of extra work. Sugestions?
U can’t get it from under withere remove bumper on reach in through grill but did u check pressure ?
What I learned is that once the compressors goes u have to change everything brand new for it to work Becuase I did the same thing with the fuse I changed the fues but nothing still doesn’t want to hold the air the next morning only for the whole day . Maybe the ac pressure switch maybe ? Idk I haven’t touched that but the thing is when I put the cold air it hold pressure
I don’t think u have diagnosed the issue the fuse and relay are basics ac compressor u have to check if it got power on the control cable how ever ur pressure has to be good so pressure switch can activate the system to come on all work togather but start with checking ac pressure with gauges fuse and relay of all check out check to see if there’s power at ac compressor then u can rule out if compress is good or bad
@@RBTheMechanic the compressor is brand new bro I do not have the oem one that one broken that when it started blowing hot air the problem is I got a leak somewhere and it’s most likely the condenser Becuase I changed the compressor we changed the evaporator and the expansion valve new cooling fan inside with all new o rings . U put cold air it’s gone the next morning it holds the pressure same day we put it in and u hear it clicking on when we pump it in there to so that’s not the problem the ac lines be cold to no frost tho . It has to be the condenser Becuase I have gotten hit from the front months ago
@@brooklyn7941 u need to check for leaks
Gonna try this now!
It’s only to test to see if compressor comes on and remove it immediately
@RBTheMechanic did the relay test. Good! The switch test. Good! Now I'm guessing it is the compressor that's out.
@@jamesledesma did u check Freon pressure. U can jump the ac relay and test to see if compressor comes on and line get cold for 2-3 seconds only
Thanks
Welcome
My 2007 Honda CRV the ac works great except on hot (95F) days. After running for about 20 minutes the ac goes warm. The clutch disengages. This remains like this for 20 minutes and then it goes to blowing cold again. Then repeats. I have had Freon checked, replaced compressor clutch relay with no resolution. Does this sound like the ac high pressure switch?
Well I don’t think it’s pressure switch u might want to check Freon pressure it might be low which causing less cooling
I added Freeon but it went away after a day. What could possibly be the problem? I already checked the relay and the 7.5A fuse.
Well u have a leak then u need to add dye and check with uv light
Hello my ac problem is doing the exact same thing as yours but I just found out I don’t have the ac pressure switch so hopefully that’s what kicks on the ac compressor from the climate control panel when I get one
It has to have pressure switch but start with relay swap and check pressure
@@RBTheMechanic it worked after I put the pressure switch around and refilled it up with coolant it blows cold but when temperatures are at 86 degrees it starts to feel less cold ?
@@Jenny-ll3ff ur ac not propperly charged u need to service the system with ac machine
I need some help, I have a 2006 honda accord v6. Same problem. I just got the car and recharged the system. Then 2 days later the compressor went out due to over heating. I replaced the compressor and the fan. Turned it on and the compressor blew the valve and leaked everything out. Replaced drier, compressor (again) evap core expansion valve both lines, pressure switch, literally everything in the system is new. Worked 1 day and blew it off again. I just spent 2000.00 on the AC and I'm at a loss. Is there anything you can think of? All fuses work relays everything. I thought it was clogged lines that's why I replaced everything and it still blew. Why is it building that much pressure? Could a short in the wire cause it to send a high pressure signal causing it to blow out?
Well problem like that could be restriction I. The systym will be hard to find but how ru adding Freon? Ru using ac recovery machine
Good job. Did you check only HOT side?
U can check both
If the blowers/fan are spinning and air is coming out, does that mean the compressor is turning on and the issue is something else? I have hot air coming out. I was gonna do a recharge on the low pressure line but it’s already at the right psi. I want to know how to determine if the compressor or clutch is not engaging
Might not have Freon and got hot air pressure
@@RBTheMechanicOK, Should I try to purge the hot air pressure by pushing/releasing air thru the low pressure valve? By the way the thermostat works, if I change it to hot it really does get hotter
@@stratosphere240 no I done that been there with cans no point of it try having it reserviced with ac machine that’s the best way
Did the relay test and the clutch engaged. I replaced the fuse relay and the clutch still wouldn’t come on. I’m getting a new pressure switch tomorrow and imma install it and see if it comes on.
Did it work ?
@@jeffreykilla3295 no
Hey can you plz tell me how to order the right switch. My friends car is about the same model and it's doing the samething. This video really helped me out so thank you by the way
It’s called ac pressure switch. Before u do this check ac pressure and swap relay possability could be relay fuse or no pressure
2004 acura tl , all fuses and relays good fans spin compressor comes on something & when it does after 10mins it turns off could it be the ac pressure switch ?
10 minutes? Or seconds did u check ac pressure ?
Did you find your issue?
2015 nissan altima the pressure sensor have 3 wires, red,white and green , which one should I connect the jumper wire to? Thank you for your time
U can’t jump those but I will check it out
@@RBTheMechanic Thank you for your time
I have a Hoda Accord de relay and the fuse are good . But I don’t see power in the connector of the compressor. Can be because the sensor maybe it’s bad ?
Did u check pressure inn ac system
My accord has the 4-pin ac pressure switch (V6). Which pins get shorted?
U can’t do those use scan tool to Conan pressure switch on
Can you please provide a bit more detail? Which scan tool? What do mean by "Conan pressure switch on?
I’m confused how you can tell whether the compressor is running or not. When you showed it, it looked like it was running both times. I’m not sure what to look for to tell when it’s running or not.
The center clutch dosent spin when it’s not working
@@RBTheMechanic ohhh gotcha. I just swapped the relays on mine and the compressor didn’t go on either time…
@@christianjmyhre check pressure and fuse as well
I need you help I replace the switch today but the compressor is not coming on. Do I have to add refrigerant for pressure?
Did u do swap relay test and check fuse. And never add Freon first check pressure if I have doubts service the ac system properly using ac machine recover vaccum and recharge correct amount
ok but what happens if i just put eletrical tape on the wire and run it like that forever. will it damage anything else or what?
This is only for test 1-2 cravings max yes u will blow compressor and whole system can be damaged
Hey RB I know this is an older video, but I got a new blower motor and resistor, and my blower kicks on them cuts off sometimes it doesn't work at all. I think I may have a bad wire somewhere but would like your opinion thank you
Did u try this on high speed to see if it cuts off either resistor or motor could be the issue if it dosent cut off on high speed then it maybe resistor
@@RBTheMechanic yeah at high speed it works for about a couple minutes then turns off but at low speeds it's constantly blowing mild then blowing hard like it's struggling in power or something.
Thanks for video but how do you change the switch?
U need to recover empty the system then use wrench and wrench
Thanks for the video. I have a 2003 4 cyl that is a 5 speed and about 5 years the entire system was replaced and all of a sudden it just stopped blowing cold air and I am clueless. All of the fuses are good, the A/C compressor is getting power and turns on, but just keeps blowing warm air. Both the cabin and intake filters are clean and almost new. Even though the compressor is turned on, is it possible one of the relays is bad? I hooked up an 3 way automotive air conditioning diagnostic manifold gauge and both the high and low pressure seems good and completely filled with freon.
If ur compressor is working then it could be hot air pressure not Freon in the system it may need to be reserviced
@@RBTheMechanic Thanks for the fast reply RB. Is that something one could do themselves, or requires special/expensive tools? How does hot air pressure get into the system? Thank you.
@@RBTheMechanic I just checked it out and it appears it might be possible to just release some of the built-up pressure in the system. I'll let some of it out, especially considering it is extremely hot here (95-100F) and that might be why it is higher. Hopefully, this fixes the problem. Thanks again.
@@thepowerofyourvoicepodcast no good idea to release it like that it’s harmful to the atmosphere
@@thepowerofyourvoicepodcast well it needs machine to do it proppery and it’s expencive so it’s best u take it to mechanic let them do it
Question, my AC doesn't work the clutch doesn't engage - I haven't swapped or replaced any relays yet, I checked all the fuses, they are good, I noticed that only one fan turns on when it gets hot, When I turn on the AC should both fans come on? Does the AC pressure switch control the one fan thats not coming or do I have 2 problems the fan and the clutch not engaging.
Start with swaping the relay and check Freon pressure
@@RBTheMechanic will do thanks
Both fans SHOULD come on when you turn on your ac and that leads me to believe you may have a bad radiator fan
How do you bypass a 4 wire pressure switch? I cant add freon showing low pressure- fuses look good and relays were swapped
I jumped pressure switch as qell as compresser relay and my clutch still did not engage. What does this mean?
Prolly bad ac compressor check pressure and fuse after all use test light to see if power reaches the ac compressor that should confirm it
Can you keep that jumper cable instead or replacing switch?
No cuz it will run all time and burn out the systm
I have checked the relay, fuse, and I just tried the switch bypass. The clutch still does not engage and I have checked that there is power going to it. Any thoughts?
Well put ac on check to see if you sc compressor is getting power
@@RBTheMechanic ac is on but compressor still doesn’t spin
you have different head unit (touch screen), is that original comes with your accord?
Original
I have a 2006 accord. When I jump the switch the cutch engages and ac blows cold but my ac fan doesn't kick in. When I remove the jumper the clutch turns off and hot air blows. Can you help me
Ok did u swap out the ac relay and fuse?
@@RBTheMechanic i swapped the relay with one of the other relays still didn't work. The fuse is good
@@RIGIDGAMER need more diagnostic it can be bad ac switch or low pressure did u check pressure with gauges
@@RBTheMechanic no I didn't check the guage but I will get them checked. This how my problem started. I switch my ac compressor because the old one I had in the car clutch started to only engage sometimes. Like early in the morning sometimes when it's cool the clutch would work and ac would be cool for like 15 mins then it stops. So I swapped and put in a next compressor. This one the clutch only is engaging when I jump it. Do u think it's my pressure switch?
Also worth noting with my old compressor that I changed I realized sometimes that when the clutch didnt engaged if I slam the car hood shut it normally would cause the clutch to work and ac to cool
Man I’ve got new relays, new compressor, fuses intact, recharged and pressure in the system and the switch is working, no clue on what the problem could be at this point.
Dose the ac compressor come on? And how did u recharge the system?
Can the pressure switch be replaced with out vacuuming the system?
Not all cars Ford I know u can not all tho but not this one but I can be wrong
Hey my 2005 Honda Accord w/ 150k miles be blowing snowballs and all of a sudden the ac just blows hot. It be on & off, got any tips on what the problem might be?
Start with checking basic
check fuse
Swap out relay
Check pressure
See if ac compressor engages
Relay can be the issues it will work here and there go off
I'm having SAME issue! Will be checking the relay
@@rcollins4958 it was my compressor that went out. When you hear a clicking noise that means the magnet is working. If u don’t hear a clicking when ur ac is on its most likely the air compressor
2003 accord 117k miles same problem ac won’t work you think this is the problem o allready try to swap the relay it still don’t work
Put the ac on and see if both radiator fans come on also see if ac compressor engages. If both fans come on that’s a hint that system comes on either relay fuse or ac compressor
Seen this, mine blows, works, but no cold air. Not the relay or fuse, not the preasure switch, not the freon. Im assuming it's the compressor itself going bad. Sucks
Could be did u check to see if low side line get cold with ac on
What happens if you replace the switch and it still not working ? What could be bad ?
Did u check basic stuff first fuse relay? Pressure? Power to compressor
@@RBTheMechanic Yes, only when I jump it the A/C clutch works
@@ldiegohl2028 ac get cold? Did u check fuse and swap relay
3:40 how can u tell if compressor is engaging? Sound?
Nvm i finished the video lol, cool fix ! Gonna try
The clutch engages and sound changes as well
What will happen if you jump it and leave it,use the ac like normal.What will happen?
Not good idea u will blow the systym with in minutes it wount even last this is for only test
@@RBTheMechanic thanks
I lose all the Freon I put in to see if it works now lose all of it buy more and replace it.
Can’t win…
@@Clarity5970 u have to trace the leak down and replace the leaking part
My car also like this no work ac ...I think compressor problem?
Check the basics Freon pressure and swap the relay and u can do power test on the ac compressor if it got power then it’s just bad compressor but do the relay and try it on first if it got pressure
I do DoorDash for a living so I rely on my AC and it just stopped working this morning. I have a 2007 Honda Accord 2.4 4 cylinder It worked completely fine yesterday and blew ac fine. Now I went in to start driving and tried turning it on and the controls for the AC don’t do anything, I can’t press them but the AC does not turn on. 😓 I know almost nothing about cars to be honest or how to troubleshoot.
Check the fuse and relay swap it and see how it preform
I did swap it and nothing worked I replaced both relays in the engine bay and both 7.5 fuses the one in the engine bay and the inside one by the driver. I did a little research The compressor up front is activating and spinning. I don’t think it’s the high and low pressure thing because it’s not coming on on any setting. Not sure what else it could be.
@@cherrycola7341 if compressor comes on ac should be cold unless it dosent have from and got air pressure
@@RBTheMechanic the AC compressor comes on but the air does not come on in the cabin at all period.
@@RBTheMechanic If it was pressure related it would still work just not as much I’m assuming but in this case it doesn’t come on at all. So I’m thinking it might be the fan thing that’s underneath the glovebox but I’m not sure what to do there.
So why does the v6 have a 4 pin connection an 4 cylinder have 2 pin
It’s the year they made changes it can detect diffrent pressures
@@RBTheMechanic ima look further into it to ima unplug the ac compressor it self an see if it has power at the plug what if no power at the plug .....an what are the symptoms of a bad climate control pressure switch the one on the left of the condenser mine has 4 pin instead of 2 pin my car a v6
@@marshallrichardson8575 well the whole system will shut down but it could be anything control or pressure switch so start basic check fuses and power to compressor
WILL THIS ALSO PREVENT THE RADIATOR FANS FROM WORKING?
Not radiator but ac condenser fan will not activate with ac but it will still can be commanded for engine temp
@RBTheMechanic after washing my engine bay my clutch and radiator fan stopped working
@@octaviolozano6890 not suppose to water the u see hood components. U will have lot of issues
Explanation not consistent and step by step needed for someone with no knowledge
Ok will redue summer time
That does NOT WORK FOR THE V6 ACCORD! The plug at that location on the v6 models is a 4-pin connector and only controls the passenger-side engine cooling fan.
Yup it’s diffrent on b6
Did you ever figure it out
@@marshallrichardson8575 No, so I removed the relay and ran a 12v switched wire to that pin of the relay socket to force the a/c compressor on whenever I activate the a/c. It's an extra step, but it works
@@acgstereoman so at first yu didn't have no power going to the ac compressor plug going to the ac compressor it self
@@marshallrichardson8575 idk why there was no power. I bought the car in 2016 and replaced the compressor immediately. It was probably a little less than a year later that I had to run that extra wire.
In my accord ac doesn't work, but belt on compressor run all the time regardless ac switch is on or off. Is that as should be?
Dose the clutch engage on compressor and I want u to change out the relay regardless try that first and check Freon pressure and confirm if clutch engages?
@@RBTheMechanic how you concluding compressor engaged? In both cases your belt was running and for me no difference on the compressor
@@jazu40 the center of clutch on compressor will click and start to spit as u put ac on if it dosent then it’s not workin
@@RBTheMechanic compressor does not engage. There is freon in the system. I switched relays also. In the past shop guy told me that compressor need to be change but looks to me clutch is not working. 2hat you think?
@@jazu40 ok one more thing put the ac on and see if both radiator fans come on?