Engine fan stays on. Troubleshoot, diagnose engine fan on a semi truck. Fix an engine fan.

[@DIYSEMI]

DIY SEMI, TRUCKING AND MORE • 59 seconds ago For great fuel discounts with no fuel card required, watch this video! kzbin.info/www/bejne/gpulZoxsZdVkp6s

[@PindtoAustraliatoAmerica]

Can you answer my questions which I mentioned in comment

[@JRich-kq6dc]

Good evening Sir I have a Detroit 12.7 470 horses going up mountains 40k plus truck always start over heating... Will manually turning it on stop truck from over heating? Everything else works great runs like a champ

[@JRich-kq6dc]

Turning Fan on 🤦🏾

[@mikedouglas8422]

@@JRich-kq6dc [oka

[@CarolinaDreamerAutomotive]

Great video! After paying a shop to diagnose a stuck fan on, I watched them slap on a new solenoid, then new high pressure switch and charge 2 hours of labor. They swore it was fixed... Didn't bother diagnosing the fan clutch with a vacuum guage or pressure test. 20 mins down the road fan was stuck on... I drove home and personally removed the fan clutch and hub from the engine bay. Not a hard of a job. I opened the fan clutch on a table and found the 20 cent o ring falling apart, not sealing air in. You couldn't hear it leak but it was enough to force the fan to run. Folks, tips in this video will save you hundreds of dollars in bad repair service bills and the frustration of trusting unskilled/ lazy mechanics with your truck.

[@SterlingWheel]

Perfectly explained.

[@williamkeyser3290]

Just purchased a Columbia with this very problem. I will be checking all of the suggestions and really appreciate the in depth tutorial. Definitely subscribed

[@seanmerisier1811]

Thanks bud, I tapped gently, all fixed, truck was parked for ten days near a dirt road 🙏🏾

[@CarolinaDreamerAutomotive]

This video saved a trip to the repair shop and untold headache. Testing the solenoid with the key on revealing air going to the fan but fan stuck in place. "Light" tapping 😅 loosened it right up

[@ClutchTrucker]

Thank you so much for this video. You helped me diagnose my problem while I was sitting at a Walmart distribution center in Casa grande Arizona and was able to buy the part the next day. Got the solenoid and repaired it myself and now I’m back on the road with no trouble. Thanks so much I’m gonna be mentioning this and you in my next video on the clutch trucker channel. Thanks again

[@DIYSEMI]

Glad it helped!

[@fawad20982]

How did you know it was solenoid? my fan goes on and of i am trying to make it home and want to make sure it's solenoid because taping is not working.

[@lennyhampton4045]

Thanks. I went on vacation and when I came back the fan kept running. I was troubleshooting the systems when I came across your video after I got stuck. I light tap on the clutch hub did the trick. Thank you

[@magicstrucking2163]

Love you video I learn a lot from your videos you are awesome especially when I open up my own authority I follow your step-by-step thank you

[@mikeshotshothauling9243]

Great video. I subscribed. My 2017 Cascadia sat on my concrete driveway for a month (my bad for not starting it once a week for 30 minutes) and yesterday when I took it for a ride I noticed the fan was on all the time. Watched your video, verified I had air going to it with the ignition switch on, no air leaking, so I tapped on the fan clutch last night,but it would not release. This morning I started up the truck and aired it up to the 140 psi max (last night it was 110-120 psi), shut truck off, turned ignition to the on position and tapped the fan clutch 8 to 10 times and it released. Whew!! Seems to be fine and I will be starting the truck at least once a week from now on. Thanks again. Be safe. ✌️

[@DIYSEMI]

Awesome

[@shottava9314]

Thank you this video really saved me time and $ my truck had been sitting in a dirt lot for two months and the fan was stuck on wouldn’t move with key in on position, I tried your hammer trick and it popped sprayed oil around it cycled key on and off and now it functioning properly THANK YOU

[@reggaeriderr]

Glad i found ur channel. I appreciate the DIY'r style.

[@Hawk-mk4kc]

Thanks Bubba.. you did a really good job explaining the entire operating mechanism of the fan.

[@charchri4]

Just gotta thank YOU for mentioning the stick clutch. I left my hood open over night and the fan was stuck in afterwards. I jumpered the airline at the switch so it had full truck air to the clutch all the time and with the engine off and air changed rapped it with a hammer and she let go. $450 and many hours saved! Thank YOU so much!!!

[@ricogonzalez7508]

Subscribed you saved my butt 6nz cat checked solenoid ran power through it. Working now here’s where you come in I ran through a huge construction dust storm for miles. I said why not hammer time … I see dust welp didn’t work immediately but by end of day viola I give you full credit

[@phantomxter]

Thanks I subscribed. I've got a 1995 379 Pete with the fan staying on all the time, spins free when engine is off. Has a manual switch. I'm troubleshooting now.

[@phillyracer83]

Good video. My ac compressor ironically just exploded as I was trying to figure out why my fan was stuck on .

[@ilnitskiy21]

Thank you 🙏, You saved me time and money Volvo 2016. Bad solenoid.

[@DavidGarcia-rz9mn]

Thank you for your time to show us.

[@autotransportingwithdavidm3656]

Thanks for the info! We have a 17 Per with Paccar mx13. Fan won’t turn off going to check everything you just mentioned and hopefully we get it fixed

[@MedEvalMusic]

Thank you so much for making this video. It helped me alot. I changed the fan clutch solenoid on my 2018 Freightliner Cascadia but the fan stilled stayed on. Then I tapped the clutch lighting with a hammer while ith key was on and it worked.

[@johnbenham6933]

Excellent explanation with good steady video. Thanks. Hope shops leave your fleet air filter alone. Sucks when a tech trashes it.

[@DIYSEMI]

yes sir!

[@umairahmad9151]

Good video and narration. I subscribed your channel only because of the way you requested at the start of this video.

[@hectorjmendoza5973]

Thank you for making this video. I just fixed my problem by following your advice.

[@jamesball8519]

What was your issue

[@Truckingtowardsfreedom]

Awesome video. Just this morning I noticed my fan was louder than usual so I realized it was stuck in the on position. After watching your video my diagnostic was a corroded broken wire at the solenoid. Thank you for your helpful video.

[@LauraBruno33]

Good job explaining this for semi truck drivers. Have a good week.

[@DIYSEMI]

Thanks, you too!

[@kirkknutson998]

Hey Adam, I just wanted to thank you for this video my van was staying on I troubleshoot it it just like you showed and it’s looking like it’s the high pressure switch for the AC when I turn off the AC the fan turns off the switch inside! Anyway thank you I appreciate the video keep making them!!!

[@DIYSEMI]

Glad it helped

[@nathanb5000]

Thanks for the info. Mine were loose cable wires to the solenoid.

[@mrdannyproduction1234]

Thanks for the help! On mine was the celenoid. Tapping gently and done.

[@vetodrag3030]

Man I love how you went over everything and explained it. Perfectly Thank you!!! I am have an issue right now, fan clutch keeps spinning, found out we need to charge AC no AC in the truck blowing. But I am going to go over all the things you talked about. I just subscribed to your channel :)

[@ross2812]

12-19-2024; temperature 9 degrees;sitting at truck stop and my fan clutch was locked. Engine temp was at the bottom of the gauge (100*). I did the diagnostic as explained here (including tapping the back of the fan). I couldn't hear an air leak from the fan clutch, so I unplugged the electronic connection and tried to rotate the fan by hand. The fan was stiff but became free. I reconnected the electronic plug and started the engine. The fan was no longer locked and the engine was able to build heat. I believe the fan clutch locked from previously driving in a snow storm, but who knows? Regardless, the fan clutch became unstuck and I didn't have any more problems.

[@cic-jakevanddalgeemyers.2739]

You got yourself a new subscriber...

[@TortuousAugur]

Good in-depth tutorial! I'm having an issue with my own engine fan at the moment. I'll be using this to try to diagnose and see if I can't find the issue. Got sub out of me.

[@TortuousAugur]

Sounds like an air leak in the clutch.

[@DIYSEMI]

I have a video on changing a fan clutch

[@TortuousAugur]

I'll be sure to check it out. 👍🏻

[@TortuousAugur]

@@DIYSEMI Thanks again! New solenoid and clutch installed after watching that video.

[@jitskid831]

Great video. Lots of information you just got yourself a new subscriber. I’m going through this problem now. Thanks for all the info.

[@mikeh1593]

Some trucks like paccar may have two high pressure ac switches. One thing with Cummins isx if the fan clutch is bad it will stay in the on position. Also if the clutch is thin enough it can separate and now you have a clutch, fan and radiator to replace. I had the clutch fail in that fashion on my isx

[@DIYSEMI]

bet that was expensive

[@mikeh1593]

About 2500.00 with tow bill and motel room and three down days. So yes it was

[@DIYSEMI]

ouch

[@CreatorEnd]

Thanks alot sir you saved me 900$ my clutch fan all it need it was a little hit with the hammer

[@Calvin-l5t]

Great video I fixed my problem

[@fredwallin815]

Turns out our was on because of sitting in the dusty lot. I’d lead with that. Hammer worked.

[@mannyflavia]

Thank you so much for your time to create this video

[@tomh6598]

This freightliner I’m driving has an engine fan switch in the cab should it be on or off?

[@DIYSEMI]

when it's off the fan should cycle on its own. In the on position it should stay on

[@dustinmason4678]

The clutch was stuck in my case too !! I smacked it with a hammer after changing solenoid and ac high pressure switch, and bam it released and rolled freely after I blew out with air hose was real dirty gravel lot also ! Thanks for video saved my butt !!

[@DIYSEMI]

cool

[@Acts238Church]

Looking forward to that fan install vid.

[@DIYSEMI]

Just ordered the parts, will be there when i get home in a week or so

[@brockysoup]

Thanks for taking the time to make this. Very helpful

[@maximilianocadena9635]

Good info, thanks, man.

[@BuildItFixItDIY]

Thanks for the clear info. Just learning my truck and now know the solenoid I saw just today is actually for (fan solenoid). My fan is on when engine off and no pressure but also stays on when running and has pressure and when outdoor temp is low in winter. So, will diagnose as you described. Appreciate it.

[@SeeMikesvideos]

saved our butts. you rock.

[@salvadorenosenalaska5913]

Have done video on adapting the on and off switch?

[@TATEXPRESSINC]

I love the video

[@DIYSEMI]

Thank you...keep up the good work

[@satpalsidhu1236]

Thanks bro its very informative

[@piccolochannel9713]

Thank you for the information it's help a lot !!

[@natnaelmebrahtu8669]

Thank you sir it helps a lot.

[@VAIkitiona]

Thank you. Helped so much on my truck

[@abdifatahbare8923]

Hello Adam thank you so much for the video I have 2016 freightliner cascades had an issue with the A/C took it to 3 shops already nothing is fixed Dan clutch stays on and it had a high pressure switch code replaced it but still the fan clutch is on could you see if you can shade some light on this issue for me . Thanks

[@DIYSEMI]

perhaps it wasnt a bad switch. You could actually have high ac pressure. have them throw some gauges on and check. If it never ever shuts off, do the checks in this video. see if it is capable of shutting off at all. clutch or solenoid could be bad. see if you can spin it with the truck off key on

[@mwilliams909]

Great vid....my truck started making a high wind noise while driving. Could it be the fan clutch? The mechanic says I need to change the fan clutch solenoid....but he said the clutch itself is fine. I just wasn't sure if thats the reason for the high wind sound. But what I did notice when he checked and tried to spin the fan by hand....it didn't spin. But he did do air pressure test.....and his suggestion was getting solenoid replaced....it's a 2012 cascadia dd15

[@DIYSEMI]

did he have the key on and air pressure built when he tried to spin it by hand? give that a try. if it spins by hand then the solenoid is releasing the clutch. If not, could be solenoid. try to walk thru the steps in the video. if he did test it with air then he is probably right. He looked at it hands on so I would probably trust what he had to say.

[@NinoAmerica]

High wind noise? I’m having issues too. I hear a whistling when I boost and my engine fan is now staying stuck on.

[@MrAlsalazar]

Bro, you are a fucking legend! This video may have saved me hundreds, maybe a thousand dollars in labor and parts. Solenoid was loose and dirty. Cleaned it with Duster, problem solved.

[@dgdodgdo7091]

👍 buen video!! Very well explained...

[@merives2263]

Does freon come out when doing the ac high pressure switch?

[@topshelf4176]

The hammer tricked worked for me after replacing numerous parts,I had to re watch a couple of times.dont forget to have air pressure and engine on not running

[@tbonepatti]

Great explanations. I have a Maxforce so anything you can say to compare if you know would be great. Still what your doing applies to all situations. Thanks.

[@cubanito48]

Perfect video , thanks subscribed

[@keithtorbert9929]

Yeah I just replaced my fan clutch and hub worked fine for 3 days no fan won’t disengage can’t spin the blades probably the selenoid

[@KT-il8vn]

Thanks for narrowing it done. Helps a lot

[@raphael8454]

Yesterday I was driving home, too, turned on, fan clutch and started working. I thought maybe the solenoid needs to be replaced. I changed a new one. but still on I came home. And was about change clutch But then I started to check, the wiring found frayed wire under starter and it was all a problem. started working properly.

[@tbren9341]

My fan is always running when I drive down the freeway, and my ac stopped working, and the mil light is on. I hope it’s just the high pressure switch. Great video

[@HighWayRambo]

what was your problem. because i’m having same problem

[@tbren9341]

@@HighWayRambo it was the a/c high pressure switch that’s on the top metal pipe that leads off the ac compressor and goes back towards the firewall. Don’t forget the small plastic ring when you screw on the new one. It will leak refrigerant of you leave it off

[@robertrinaldi8748]

That was really helpful, but my default position is on and my fan freewheels even with the airline disconnected. But I'm not convinced the clutch is bad. Any opinions would be appreciated.

[@Elvinrosario5812]

Thanks . God bless you

[@mikehaynes4478]

very informative thanks

[@willpowell5705]

Is the gray wire suppose to have voltage?

[@N1h1luss]

I got a 97 freightliner fld120 with a cummins m11 my fan wont turn off it did twice and started blowing out the over flow line of the reservoir ( i think the reservior was over filled ) my question is even with the fan blowing my temp should still be above 140-150 right? I replaced my thermostat and still have the same issue. Will the fan really keep my water temp down that low?

[@DIYSEMI]

in this cold weather yes

[@N1h1luss]

@DIYSEMI we haven't been running it for long but last year when we bought it the temp gauge still showed that same temp even in the summer ( I just wrote it off as a bad thermostat ) we just had it replaced and found out it is stuck closed wouldn't that cause it to run hotter? I also live in Florida it was about 55-60° here when we ran it after replacing the thermostat.Thanks for helping me BTW this has been racking my brain for the past few days! I

[@N1h1luss]

@DIYSEMI also I'm going to run through all your diagnostics tomorrow hopefully I can find out what's causing it to stay on!!

[@DIYSEMI]

did you verify the temp gauge is working, since it never changes?

[@N1h1luss]

@@DIYSEMI I am fairly certain the gauge is working as it should

[@carlt8976]

Great video

[@cavalrytrucking813]

Helped me with my issue!!

[@JAMAICABOYY.]

Thanks for the video

[@CashisKingtrucking]

Thanks for sharing

[@DIYSEMI]

Thanks for watching!

[@garbagegut714]

Having an issue with my volvo, changed the solenoid and tapped the clutch and fan still turns, but with key on and engine off the fan doesn't freely spin...

[@khadardahir2657]

i have freightliner Columbia but my fan says on i changed the solenoid and ac switch and i have no air leak and fan clutch did not get stuck i have checked everything you mention on your video but my fan stays on the second thing i have is i don't have cruise control when iam driving but when i am parked i have cruise control i changed clutch switch and cruise control switch but still i have the same issue

[@michaelbritton2331]

Adam I have an 03 columbia the fan clutch won't come on automatically.i have to turn on fan manually.i changed the solenoid

[@DIYSEMI]

if all the mechanical items seem to be working properly, it is possible it's an ecm issue. or a temp sensor might not be sending a good signal to let the ecm know to kick it in. just my first thought.

[@PindtoAustraliatoAmerica]

Hello sir I have 2000 freightliner Classic xl , with 60 Detroit 12.7 motor, And I replaced new fan clutch, and solenoid, and Ac high pressure switch . But fan still runs on even engine is cold. Any suggestion , could be relay? Or something else. I noticed when I turn ac on ac compressor turn on off but, ac working. And I liked your videos and subscribed. Thank you

[@DIYSEMI]

any air leaks around the clutch? possible overcharge in refrigerant. at a certain point, once you adddress all the mechanical issues, it can be electronic and need to be hooked to a computer for eelctrical diagnostic

[@lakwanwilliams4621]

I have a air leak on a fitting that’s connected behind the fan clutch and the belts connected to the fan. Can that be reason my fan is staying on?

[@DIYSEMI]

Yes could very well be

[@lakwanwilliams4621]

@@DIYSEMI I need help figuring out what fitting is called. Do y’all have a email or something I can send video of the fitting that’s leaking

[@MrsHeadley]

Do you have any videos for international 4300?

[@DIYSEMI]

i dont

[@simplespeed84]

2016 T680 isx15. Im in AZ and outside temp on dash reads 124°. With ac on, fan stays on. With ac off, fan will turn off. Ac is blowing cold at idle and while moving. Once im going down the hwy with ac on and fan is on i can turn ac off and the fan will go off. It will stay off until i start to come to a stop even when i tirn the ac back on. Then the fan kicks on and stays on again. No ac codes present. And idea?

[@tigreperro9336]

Hey man …. How do you got it fixed??? I have exact same issue.. appreciate your answer ..

[@muadalrohani966]

Same here fan stays on any thing new t680 pacar

[@tigreperro9336]

@@muadalrohani966 mine was my fan clutch seized.. test your fan clutch with air pressure . If fan clutch works ,,, change your hi pressure sensor switch on your ac line

[@muadalrohani966]

@@tigreperro9336 and the ac on the truck been bad like the sleeper never heats n it comes on and off by it’s self that what I’m thinking and I’m about doin later today I just want kno wat I need kno what parts go with my truck

[@namentatic4978]

I have the Detroit D15 and some pressure is building up in the cooling system that pushes coolant out of the surge tank. Engine's fan looks OK. What could cause that problem?

[@DIYSEMI]

that's not good news. without knowing all the details, the first things that come to mind are: bad air compressor, bad head gasket ,or cracked head. If you are looking to start looking for something simple first, check the cap on your surge tank...make sure it is the correct psi, and that it is functioning...or spend a few bucks on a new one. I'm not all that experienced with the dd15, drove one for a bit but never had to work on it. sorry to say, if it's not a faulty pressure cap, then it's probably an expensive fix. Someone more experienced with that engine would be more qualified to help you.... but that's just my first thoughts on it.

[@namentatic4978]

@@DIYSEMI , coolant is pushing and leaking through the little, overfilled hose. I noticed silicone under the heads. It says to me there is not head gasket, and somebody put just silicone. I do not think it is original. Truck is 2016, and has just around 300K miles on it. Thanks for your good advice. I appreciate it.

[@05views54]

From my experience it came to be the air compressor so I’d troubleshoot that after the filler cap.

[@abdiqanigoodad7802]

What about if is leaking air i hear whistle coming out top of the clutch do I have to replace the whole clutch

[@DIYSEMI]

It will have to be taken apart and fixed...in my opinion, if it is old and you are taking it apart anyway, you may as well put a new one on. If its not that old, maybe you just a rebuild kit.

[@MemphianX]

Will the fan clutch Solenoid effect the regen process

[@sodbuster518able]

Got to be older than a 2012 model,no DEF on that model and 2008 and later Columbia was replaced by the Cascadi model,same with the Century Class.The only exception was later yr built Coranado model.Also later models had the DD15 replaced the 60 Series.

[@DIYSEMI]

It's a 2012 glider

[@robertovillalon2841]

Thank you!

[@gabrielreynoso4964]

Very good video

[@RC-Heli835]

On my KW T800 the fan functions fine until I plug the new AC compressor in. It worked fine with the old compressor cycling on at 320 PSI and off around 150 but now if that new AC compressor is plugged in the fan stays on whether the AC is on or off.

[@DIYSEMI]

It's gotta be reading high pressure? That's really weird

[@RC-Heli835]

@@DIYSEMI Do mean like false high pressure? I let the pressure down thinking it might be over charged and now its not cooling at all where it was blowing ice cubes. This compressor cycles on and off constantly where the other one would not cut off unless high side dropped to 100 psi on the high side. This compressor cycles on at 230 or 240 and off at 420PSI on the high side. The old one worked great but I could not find a slow leak to save my life. The compressor was the only place left. The system would hold 220PSI of Nitrogen for 1 hr and gain a psi but not hold a charge but 2 days. 3rd day dropped off slowly to warm air. With dye I found a slow leaking shraeder but fixed it, charged it and the same thing 2 days cold and downhill from there. I could smell freon strong standing on the ground with the hood open the last little bit I ran the old compressor.

[@DIYSEMI]

Had you checked the evaporator in the dash and Bunk for leaks? Usually if you can't find it, it's in there. I'd have to say there is definitely a problem with that new compressor 420psi is quite high. Surprised the relief plug doesn't release on the back of the compressor. I forgot... Have u replaced the high pressure sensor? Usually short cycling is a sign of low charge,. But doesn't sound like that's your case. It should not be kicking in at 240 either. It's hard to tell what's happening here. Seems like it functioned right, except for a leak. Until the new compressor was put on. I assume that you pulled a vacuum on the system and all that before you charged it? Just asking cuz this is puzzling

[@RC-Heli835]

@@DIYSEMI Yea I took the evaporator out and soaped it good with lower pressure in the system. Yes I vacuumed the system down to 250 microns and its stayed 10 minutes while getting ready to charge it. I hooked my charge line up and vacuumed it down to 250 microns as well. What I did this evening is let the freon pressure down lower than would have ever worked on the old compressor and it seems to be working. I've been running with the thing unplugged so my fan don't burn up a lot of extra fuel. I'm gonna try it tomorrow and see if it will work. This is so crazy though static pressure right now will be 52.5 psi. The Kenworth T800 maintenance manual says it should be about 66 psi. And that's why I tried letting down the pressure. I think I let off just a little too much and will freeze up, I do have a freeze switch so should be fine. Its blowing ice cubes right now. With the old compressor it ran best before at 105 static and 25 low side. High side varied from 150 to 320 with the fan cycling. The compressor almost never shut off though. And that blew ice cubes.

[@beauipox5496]

I have a 2014 frieghtliner coronado glider with the 12.7 detriot and I'm having an issue where the check engine light will come on and when it comes on the fan kicks on and won't shut off. Says oil temp is to high is my only fault code. There are times where I can run without it coming on for weeks and then sometimes it won't shut off for a few days. Very hit and miss. Any ideas?

[@DIYSEMI]

probably a bad oil temp sensor

[@beauipox5496]

I've replaced oil temp sensor coolant level sensor and oil pressure sensor

[@ስገምሃዘጋ]

Very helpful thank you very much.

[@lewisdiyprojects698]

Thanks... great information!

[@MalkitSingh-cw4ww]

Hi, I have a Freightliner Cascadia 2015. It’s hub fan gets stuck a lot and works sometimes but other times it doesn’t. The secondary air tank pressure drops and the fan keeps moving. This happens a lot what do you think is wrong?

[@DIYSEMI]

Sounds like you have an air leak somewhere

[@serega11116]

love your vids keep them coming :-)

[@DIYSEMI]

Thanks, will do!

[@GerardoMartinez-hh6ge]

Thanks sr

[@2_IMPERIO_7]

My fan keep ls turning on automatically often even when it shouldnt! It makes a heavier noise than when the fan is activated aswell. Kind of grinding vibrating sound. I can turn it off after I turn it off manually and then turn it off. It stays off for a while sometimes it come back up right away. I tried changing the coolant temp sensor and still going. Mechanic checked for air leaks nothing. What do you think it could be? Its also comsuming more fuel. 😫 2006 CAT C13 on Kenworth T800.

[@DIYSEMI]

Check everything I mentioned in the video. If none of that works you will have to take it to a shop

[@curtisbarnes5895]

Good job.

[@khadardahir2657]

I had cruise control issue i have freightliner columbia Detroit 07 when iam parked my cruise control is working but when I drive I don't have any cruise control set what would you think the issue is

[@DIYSEMI]

possibly throttle position sensor

[@marcuswhite1403]

On a 2012 Freightliner M2. Once my fan engages, it stays on. It does it even when the A/C is off. That wouldn't have anything to do with the high pressure switch would it?

[@moveedhassan7810]

Thank You.

[@JOSH-bx5wp]

Hey man ,I have a 2015 cummins isx on an international9900i, I replaced the temp sensor, ac high pressure switch but still the fan comes on at 180 temp. Please help . Thanks for your video

[@DIYSEMI]

Have u checked to see if perhaps you actually are running hi ac pressure. Maybe switch not bad but pressure is actually high. Also, ecm can cause this too only computer can chk that. Watch my video on using ac gauges to check pressure. Look for 150 -250 on the high side....see where fan kicks in at. Get it good and warm.

[@JOSH-bx5wp]

@@DIYSEMI okay thanks man. Ecm is not throwing any fault codes at all but I haven't checked the ac yet but will do so and post an update if that solves my problem. Thanks man, appreciate your word.

[@CooterELee]

2013 Clark diesel 12.7 glider like this one. Fan stays on about 30 minutes and then releases. Today the fan hub is leaking air when it’s not released key on (I tried tapping with hammer) but when I bypass the solenoid by connecting supply air directly it releases and doesn’t leak. This is a new solenoid. A bad solenoid or do I need to rebuild fan? Can I get by with just cleaning and o ring kit or do I need to do a full rebuild?