Engage AC Compressor Clutch with a Paperclip on Relay | How to Fix Bypass Won't Engage | Jump Relay
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- Опубліковано 2 жов 2024
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If your A/C compressor clutch won't engage because the refrigerant is too low, then you can jump the 30 and 87 pins to get the Clutch Engage. Make sure you are prepared to immediately fill the refrigerant, or shut off the engine and prepare after seeing this works to engage the AC clutch. Because you do not want to damage the compressor by turning it on too long without Refrigerant.
Believe it or not, In most dealship workshop manuals this is step #2 in troubleshooting the ac compressor.
What's step number 3 when it doesn't engage when jumped, test light confirms power to clutch, multimeter confirmed the ground...
@@chrispayseur6913 Go straight to the source. Put power to the clutch itself and see if it engages. That'll tell you at that point there's a wiring issue between the clutch plug and somewhere in between.
@@automotiveperformancemobil4030 Thanks, I was actually able to tap the clutch plate with power running to it and it engaged. Ended up pulling off the clutch plate taking the washer out and replacing it with a washer half the diameter bringing it closer together and it's been working ever since.
@@chrispayseur6913 hhh
Man. Thank you for this. Every forum post I could find, they always want to be so elaborate with schematics and technical talk trying to tell you how to do this.And I'm like I don't want to learn about A/C theory and analyze schematics...... I'm just an idiot in my driveway with a can of refrigerant, just show me a picture lol. Thank you.
🤣😂🤣😂🤣😂
😂
Hey don’t feel bad, I have 3 cans of recharge and I’ll just pop my hood and stare at the engine then go back in the house and say forget it 🤣
As an HVAC tech.. dealing with refrigerant daily, for a decade now... I can relate . And idiot in the drive way with a can of refrigerant
👏👏👏🤣🤣🤣
I tried this on my wife's car 🚗 and my neighbor's house exploded
Thanks cause I hate my neighbor🤔🤐😂
😂😂😂
Bro grow up your not funny
You made your neighbor explode in his pants
Whats your wife's car doing there lol
This really helped! Thanks!! Ended up not needing the refrigerant, but this hack pinpointed something wrong with my relay.
Coming from a non-mechanical person like myself. WORKED LIKE A CHAMP! THANKS!!!
I don't think A/C relay "knows" if you are low on refrigerant. It simply sends electric current to the A/C clutch.
That's all it does. Another component called "the refrigerant pressure switch" can prevent clutch from engaging if you are low on refrigerant. It would have to be bypassed in order to charge the system. That is the real "chicken and the egg" situation....
That was a great example how to save money cause dealer would have told said you need a compressor
Or you go to autozone and spend 5 bucks and get a new relay.....
I jumped the relay, got the clutch moving and recharged the AC. It worked fine for a day. Now the compressor clutch is not moving again. I jumped the relay to get the clutch moving so I could check the pressure. It is still in the green so it’s holding the charge. The relays are fine. When I jumped the clutch to check the pressure it was blowing warm air even with the clutch moving.
figure anything out yet?
Any updates?
wow cant believe it was a dam fuse. I changed everything and it was a fuse. I always check fuses lol.
So for me, my thermostat only reads temperature some of the time. Currently waiting for a couple day block to replace the thermostat myself. I do also believe some of the wiring is bad. When my temp does not read in my 09 cobalt, the ac does not work. When it does read temp, the ac works.
Thanks for the info. I was searching for ways to bypass a faulty relay for central air and this popped up which is definitely needed being that my wife’s compressor clutch is not engaging. I’m going to try this and see if it works. Thanks again!
if its just a faulty relay, then switch your AC relay with the Horn relay... they are usually the same relay. to test out if it was actually a faulty relay.
@@PoolarityChannel I try to switch, it confirms that the AC relay is failing, thanks for your advice! I really appreciate it.
Great relay
Amen! Great help. Had the same rock and a hard place issue with the compressor not engaging due to being empty on refrigerant.
Once ya add freon the low switch does it's thing an turns on AC compressor broooooo
Not always, bro...
@@da324 Then you got another problem not just low freon bro
Exactly... I keep asking myself why people don't make things simple
needs a module lol
Lmao i was looking up "ac bypass" and it just so happens i have the same car so super helpful lol but mine is a type-s :P
What does it mean if this doesn't work...ac clutch spins freely by hand so it isnt seized up...checked relay box has power...but clutch still won't engage
Did you figure it out?
Thank you so much bro! You saved me from not buying a new compressor. I did what you did on how to overide the ac clutch to engage.....it work on my '08 Odyssey that im having trouble for 2days.! Thank you! More power to you!
Do you leave the paper clip, or do you replace it with the relay after it's charged?
@@wizardess_of_oz Yes you have to.
Check out Carry Blackie's question, and Andrew's answer to the question. He explains it well👍🏻
This video taught me how to fix the ac in my work truck which has been out for 3 years. Thank you so much!
Do you put the paper clip in first then start the car or after you start the car
Thank you very much sincerely. Saved me a lot of time and money.
Why don’t you have enough refrigerant? Was there a leak? I though it was a closed system. I’m trying to figure out if I have same problem or if it’s my clutch that is bad and I need a new compressor?
I did this to get the ac clutch engaged, but when I checked the freon it was at the minimum green level which should be enough, but is still blowing hot (just outside air in not heat), not sure what else to do
It worked for me but when I replaced the relay the clutch doesnt engage? Is this the relay that may be broken?
Youve probably figured this out long ago but once you jump the clutch you need to check your refrigerant level, if its low add the right amount. Once you have the right amount of refrigerant, plug the relay back in. If it still wont come on, use the paperclip again and see if it blows cold. If it does replace relay or try another similar relay in your car that you know works
I really appreciate this. Once I saw the compressor and everything worked, I jumped it, filled freon, and restarted. Now, it didn't cut on initially on its own but I simply disconnected the car battery for a minute to reset everything and it worked! With all the intelligence in cars you'd think a simple refrigerant gauge would be made. Nope. Imagine how many people replaced ac systems when all they needed was to attempt this process first.
my clutch would NEVER engage on my 01 JIMMY. I just wasted 300 dollars to replace it and refill it. still never engaged. just saw this video and I'm going to be so mad if it just needed to be jumped in order to start engaging again 😡😑😑😑
Thank you very much , I couldn't understand why after all I couldn't get the ac to work until I removed the battery cable and put it back on ,thanks a lot !!!
@@isabellamaya5464 How about it? Any updates?
@@mikeprice8307 well still going strong! When I got my ac compressor it didn't come with a pressure switch in the back so I just kept it on a paperclip to jump it anytime I need AC (2001 GMC jimmy 2wd)
@@isabellamaya5464 so you purchased a new compressor for nothing?
What I'll do is I'll take for example the windshield wiper relay normally they are the same relay I'll take out the relay and put it in the AC relay as long as the numbers match they are the same relay then turn on the AC and see if the AC clutch comes on or not if that relay is working on the windshield wipers for example then it will work on the AC clutch so I just take one that's exactly the same number see where it goes and I will swap out the relays and see if the relay is good
What does it mean if clutch still does not engage?
Worked like a charm! My was a bit different on the relay. I was working on our 2009 Ford Fusion 2.3L. The relay is model 5L3T-AA. It has four posts marked as 1, 2, 3, 5. So I looked up the relay diagram and saw that I needed to use 3 and 5. Clutch engaged, and we added our R134-a. Took it for a 10 minute drive and was super cold by the time we arrived home. I turned the A/C on and off several times to ensure the clutch would keep engaging. Great video! Thanks!!
Where did u find the diagram for 3 and 5
@@jesss2621 Just Google "5L3T-AA" and then click "Images". You'll see several diagrams. Select one and you'll see the details.
tl;dr Use paperclip to jumper pins 30+87 in your relay box while engine off. Done!
Sir after that, will the clutch compressor function? Do i need to buy a new relay?
@@seanmhar123 Yes! If relay was good you would have no need to bypass it in the first place.
@@jamesebola1250 mine starts then stops repeatably lol does that mean mine is going bad ? ( Trying to recharge ac )
@@lexlino6744 It sounds you are low on refrigerant. As you add more it will cycle less frequently.
@@jamesebola1250 you’re wrong dude. It’s not because the relay is bad- the PCM only provides ground to allow the relay to close, thereby completing the circuit and engaging the clutch on the compressor. Because the pressure is So LOW, the conditions required by the PCM aren’t satisfied, and so it will not allow the functions required to add r134- that’s the “chicken/egg” reference at the beginning of the vid…the relay is Typically just fine…so now YOU know as well.
Thank you so much, only video that got to the point and not on and on about nothing, Thank you
You just saved me $,$$.$$ thanks so much!!!
What happens when you try to fill without the clutch engaging? I realized after watching the video that the clutch was not engaging but was able to fill? Is it a thing that the system can be charged but there is an issue due to the clutch not engaged when filling?
How do you tell its the right one? I'm not sure witch one to pull out and look at 98 f150 no ac but the cluck isn't moving
This worked perfectly. I was having this exact issue, where I had repaired the compressor off-engine, and so the pressure was completely released and it would not engage until it was full and could not fill without engaging. terrible design imo lol
I replaced mine and I got it to take 2 small cans of Freon and it still won’t engage. Gonna try jumping the relay
@@cloudrehzii any updates?
Does my ac have to be on full blast when doing this or no?
(Sigh) didn't turn on for me
He got that zhong tong
So I have a 2006 dodge grand caravan, have not had ac in years (my teenagers were driving so I didn't care if it had air lol) But now I'm driving it and it's getting hot out.. All the refrigerant had leaked out due to the notorious rear leak. So I capped the rear lines (very easy). I proceeded to put refrigerant in but the ac clutch did not engage (I thought bad compressor due to not being used in so long. Did a little more research and read it would not engage if refrigerant was empty so I jumped the relay (30 to 87) and the compressor came on! Filled it up with 3 12oz cans and now works great! Thank you for the video!
That's encouraging. I also have a '06 Dodge Grand Caravan. I kept hearing a loud grinding noise that was coming from the engine bay, only at idle. It did it for years and a mechanic told me it was the alternator when he I had it in the shop to have the rack and pinion replaced. The noise kept getting worse and I determined that it was coming from the AC compressor by removing the AC clutch relay fuse because the noise stopped. I replaced the clutch, pulley and coil. The noise went away, but the clutch will not engage. The AC had stopped working sometime since last summer, but I thought it was related to the clutch noise. I tried adding refrigerant, but the clutch won't engage and it shows about 80-100 pounds static pressure on the low side. I also tried replacing the pressure (transducer) switch since it was only $12. Hoping if I can get the clutch to engage I can troubleshoot some more.
@@redcloud5813 updates?
@@mikeprice8307 I ended up replacing the compressor, front and rear expansion valves, condenser and accumulater, belt and pullies, but still couldn't get the clutch to engage. Took it to a mechanic who diagnosed a bad transducer (pressure switch) even though it was new. He filled it with refrigerant and it's had ice cold 39° A/C ever since. Unfortunately, the noise returned about six months later, but it still works.😅
@@redcloud5813 did you attempt to use the jump method to engage the clutch though?
@@mikeprice8307 yes, but I couldn't get it to work that way.
Tried this compressor kicks on, everytime I turn ac on but still no cold air ?
When the compressor is on you need to check the refrigerant level. Extremely low levels of refrigerant will cause the clutch to not turn on.
Put in new compressor put 2 can freon still compressor not spinning 😢
Used the paper clip and it still didnt come on
Will the refrigerant go in without the compressor on AND when it gets to the right pressure will the compressor start......what if the system is depleted of all refrigerant and you are just putting on a new compressor? Will running the compressor without any refrigerant ruin it?
Ok Sooooooooo what do I do now that this didn't work? 😂.. Any ideas on what to look at next, clutch spins freely so I know it's not seized.. Checked all the fuses, has refrigerant..low pressure switch maybe?
Same here. U figure it out?
Updates Shaun b?
After, I had figured out that my low-pressure switch was good on a 2002 jeep liberty. I applied your method of Engaging an AC Compressor Clutch with a Paperclip on Relay. And now my AC is working like a champ. Thank Poolarity - Life Hacks
Did you have to leave the paper clip in? Or did you take it out and put the relay back on
It worked when I 1st did the bypass but now my ac compressor clutch don't work at all. Idk what happen. When I touch the 2 connections nothing happens.
It worked in my car clutch turn on and my a/ was blowing cold...But after putting the relay back on it does not come on at all.....Can anyone give me info on this? Think I have a wireing problem.
Replace the relay. About $10-15 dollars for Honda Element
I replace it with other relays in my car and still no play but when I jrump 87 & 30 comes right on??? Any other thing ot can be?
SUBSCRIBE ITS THE DEVIL is it a Honda Element?
@@Gringochulo1 2006 Chrysler 300
I’m having this same problem currently
Great Advice... I didn't know what was wrong with AC system. This technique allowed me to get the Clutch engaged. And since I had a can of refrigerant, I bought thinking it just needed a charge, I added the can to system. With one can I felt I might be getting cool air. Ran to auto store for another can... added just a little from 2nd can and YES!!! I have cold air. Thanks so much!!
Of course the relay in my car has no numbers on it 😡
I wish there was a professional fact checker with some of these half-assed backwards UA-cam videos that you guys make. There is absolutely no reason to jump the relay in order to charge an AC system on any car. If you were having problems with the system accepting refrigerant then you obviously have a blockage somewhere or your needle valve in the charge port needs to be replaced, you can also turn the can upside down and it will accept it as a liquid instead of a gas and will feed the system quicker and we'll turn the AC clutch on before your first can is even finished.
Unfortunately, the compressor replay for my 2012 Nisson Quest is under (and part of) the fuse panel, and isn't serviceable. _The want you to buy the whole panel I guess._
I want a HORSE! 🐎 To hell with cars and the cost to keep them running.
So I've got a question on that. You jump the relay like that with the vehicle off correct and then as soon as you turn it on it should make it engage but you will not hear any kind of click as soon as you insert that paper clip with the vehicle off correct?
After my car sat for a while and i finally got it to a mechanic to fix the alternator i got it back with nothing but hot air blowing. My ac used to be AMAZING. Hubs says the ac compressor clutch thingy isnt doing its thing. He got the can to refill it b4 he knew this and the damn pressure was TOO HIGH. csn he just let it all out and redo it or should i get a new fuse. I need a new car
Obviously this man has no idea about automotive diag 😂😂😂 have u ever heard of a shorted to ground ac compressor? Or a shorted out PCB? unbelievable...
Thnks. May need to do this to check my ac not working after car battery replacement. System is dead. Reconnected battery. Same. Ill check relay and fuses. Anything else to check for if ac fails after battery replace? Btw. I can connect 12v to the compressor clutch side of relay to force voltge there if need be, right?
both fans and the AC clutch engaged but the Paper clip got very hot and was glowing red and turned gray after I pulled it out. I checked and it was the right two pins.
I just did this on a 2009 Chevy Traverse the freon was so low that the compressor would not come on did the paperclip trick put two cans of freon and a pressure gauge is just barely in the green on the gauge will get another can or 2 wouldn't have no idea how much money I just saved myself but would probably be $100 or more for sure a big thanks for the video helped me alot
So I imagine if bypassing the relay doesn't do anything that means my compressor is shot right
Worked for my 2006 Kia Sportage. Thanks :)
I did this with copper wire, do you think it can last longer? Or affect performance? Im planning to use this method permanently
I did this and my paper clip turned red any ideas wats wrong ? Every time I turn in my ac the fuse blows
What number would be on the relay for a 2014 Volkswagen Passat TDI air compressor clutch? And where would it be?
My ac clutch relay has no diagram? All those prong/ connector things are all parallel or all in each corner...
How do I find out which prong is what?
Most of the time there is a SNOWFLAKE on the AC RELAY. It international I guess. Notice at the 30-second mark here, he POINTS and the SNOWFLAKE DIAGRAM and calls it an AC PRESSURE CLUTCH RELAY....it's just the Snowflake.
The button on the inside of my van isn't working, can i use this method to bypass the button using wires running in to the cabin?
Hope it helps? You kidding? You just saved me a boatload of time and money!!! Many many thanks!
He got a tsx
What if there's no spark or anything when testing because I tested my horn and there was a spark and my horn sounded but when I tested my AC clutch there was no spark or clutch engagement.?
no luck on buik
,so fucking simple why do people complicate this shit!!!!!!!!+!! Finally thank you!
Thank you very much, now I can check to make sure the spacing is correct (my refrigerant must me low so I couldn’t engage the clutch by turning the a/c on). The new clutch engages and disengages as it should when I manually bypass it as you showed.
Why would they design the compressor clutch in such way? There should be a manual alternative to engage it without using paper clips or jumper cables.
I tried this the other day the clutch kicked in and a few minutes after something went bang and I think a hose burst
Updates?
I’m still waiting..
Thank you for great video My Truck Ac is fixed by replacing that relay .
Can I keep the paperclip on there? or will it harm my car? I took it off and put a relay but it wont turn on
I have a kia Sportage 2014! In the mornings whenI start my car and the a/c the compressor clutch wont kick in. After I run the car for about 10 minutes or so the compressor kicks in! Pls advise!
Check refigerant levels, its probably low
If this works does that mean there is an issue with the relay or fuse?
could be neither, if the refrigerant is low enough the compressor will not engage. this method will allow you to check refrigerant levels and add more if needed
Why use the magic of video shortcut? 😒 We need to a tually see it hot wire and start working. Some of us have never done this
I have no idea what you're saying
How do I identify the AC compressor relay on a 2007 Prius? Looked on the black cover map thing and can't tell which one it is
Same here
I did that but compressor did not engage. So bad compressor?
I did that but compressor did not engage. So bad compressor?
What does it mean when it works when I jump it and it doesn't when I put the relay on ? The relay is bad? Also when I jump it the lines get frozen ice
check refrigerant levels when compressor is jumped. could be low refrigerant. The compressor clutch wont run even if the relay is good if there is not enough refrigerant
why u have to engage compressor if there is no freon????? u start filling it up- u get clutch working !!!
thats how it works for gods sake. In most cases if there is little freon and compressor still working but hot air.. but if there is freon and its not working ! u need replace compressor
Thk you
I watched several videos none of them made any sense until I watched this one, chevy traverse follow this exact steps and it works for me
Sweet! Thanks for supporting my channel
PSA
@@PoolarityChannel will reseting ecm do the same by disconnected battery?
Thank you! I'm going to try this.
Does the key have to be on "on" position or on "running" position to get this test right ... i have the key on off position and there is no sound or clutch engaging
Well of course😅
I have the same problem, new dryer, ac compressor, power going to try e compressor, low sensor works, but when I cross over the relay the clutch still won’t engage, any thoughts? I’m stumped at this point
Any updates?
You don't need the compressor to turn to add freon. When there is enough freon in the system. the clutch will start to kick in and out.
100% correct!
Did you need a new fuse/relay ? , is it safe to leave it like that?
With this video you showed absolutely nothing about clutch engaging or not engaging
So its 830 and 87?
Ok i jumped mine nothing aint clicking at all? Spins by hand wont engage at 87 and 30 on relay
time to take it in to someone who has specialized tools to run a few more tests.
It won't stop tho!how to make it run normal?...
Similar issue lead me here. My Kia's relay was much smaller. Real issue turned out to be the Manifold Gauge Set I borrowed from AutoZone was abused by the previous renters. The hoses were acting like they were clogged because the gasket was blocking flow. Looked like the previous users were tightening more than finger tight. I switched the Gauge Set for another and I was able to complete the job.
My clutch kicks in only when bypass..replaced the relay fuse and still nothing..does this mean my compressor is bad. I recently had my manifolds replaced and my ac was working just fine prior.
Your pressure switch is bad.
On a lot of cars the A/C pressure switch is on top of the A/C receiver-drier (vertically mounted cylinder often in front of the A/C condenser/radiator). It'd be safer to pop the switch off & bridge that than the relay (not to mention you can still control the A/C with your dash while the car is running).
I checked my switch and it has continuity so it works. Next step? Clutch doesn’t engage
@@PickleballBrand he didn't say the switch, but the connector that plugs in it.
Any updates?
@@mikeprice8307 on my 2003 Pontiac vibe I checked my pressure switch and it had continuity. I then checked the connector that goes to my compressor and it is not receiving the necessary 12v. Trying to find out why right now
@@PickleballBrandThat's another question I have. The actual pressure switch itself on mine is a three-pin connector. If I poke around with a multimeter on continuity should the actual physical pressure switch itself have continuity on some combination of the three male pins inside? I'm not getting any continuity at all on a good tested multimeter on any combination of those three pins in the physical pressure switch with it disconnected from the harness
What if the relais is not getting any power, same engine i have, the relays slot is just not getting any power!
Their should always be a constant power. Check the fuse for that relay it may be blown
How did you know you were low on refrigerant
I have a 2005 Pontiac Grand Am. Refrigerant level is good has no leaks. Put a new AC Compressor but still don't have Cold air. AC Compressor doesn't active. What can I check??
Relay and fuses.
Check voltage at the plug should be 12v. With the key on of course.
Good video
Should the car be on while you do this or do you do this paper clip then turn the car on ?
Put the paperclip first. Turn on the car and set the AC to max. Then refill the refrigerant, then remove the paperclip and put the relay back on.
works when i use the paper clip but not when i switch the “horn” fuse to the ac spot . they’re the exact same 2004 trailblazer could someone help ??
Some cars don't engage the clutch if you're too low or too high on refrigerant, it doesnt matter if the rele is ok
Check refrigerant level while clutch is jumped