I knew the reason my fan was coming on even when cold was because of the AC high pressure switch. I liked how you explained to follow the lines. Thanks for the great information!!!
Thank you for this... I think this may be my problem. I was worried the Freon would escape if I tried to replace the switch myself... I'll stop in and grab one ASAP now... Thank You!
Hi Gordon.. I watch your channal for long time.. Learned a lot from you... Thank you sir.. for share these hopefully you have every thing fixed and drive your dream truck on the road.. I am from Fort McMurray alberta canada
My FLD has fan clutch so fan all the time is locked up and operated by ecm, water temperature sensor and AC high pressure sensor, I have manual switch on my lower dash as well. Watertemp sensor and funclutch solenoid (air solenoid) both are normally closed, all work great. On idling and AC on I'm always flip that manual switch because it's been start/stop the fan every 1 minutes or even less that not good for clutch which start spinning from 0 to 500 or whatever. Friend of mine told me bigger AC condenser will solve it but I have no reason to change it. God bless you old man and stay safe out there. Peace out
A bigger compressor will not fix it, I think you have a problem with a sensor/ connection, or wiring problem. Good idea to leave the fan on until you get it fixed. Thanks for watching.
Good afternoon Mr. Gordon, I want you to know that I enjoy your content, By the way brother I didn’t know you were a car mechanic Interesting, Thank you once again for the little detail of the helpful hint, I remember when I was 15 years old a uncle of mine used baby oil to loosen up a card with a would not come open, So it’s interesting I guess with nothing surround like WD-40 or PB blaster, saliva or Johnson’s baby oil whatever we can put in there to make it smooth would work, thank you once again this is Robbie from Fort Myers Florida, 👋👌👍✌️
I drove a freightliner day cab with that exact series motor . A 60 series . It was a 400hp. I drove the shit out of that little truck. Tri state. All four seasons. I loved that little truck . Ufourtuonyley for me and the truck the owner of the truck was not big on maintenance. Coming out of Indy on my way back to Chicago it ate a valve and locked up. I heard it and shut the motor off. My POS boss told me to try and make it back home lol. I told him, the motor is DONE. Anyhow, I got about 200 yards and the motor locked up. The truck ended up sitting in the yard. Too bad, I liked that little truck
The result is fan will stop coming on if you were watching the beginning of the video... Or in the case I'm dealing with a high pressure switch is causing my system to shut off when it needs to be running.
Freon shouldn't come out, maybe just a little when you start to loosen the switch. There is a schrader valve in the port where the switch goes, if somebody took it out then you need to evacuate the system and replace the schrader valve to change the switch.
If the ac was not on I dont think that was the issue. ECM ground ambient air temperature to high multiple things can cause the fan to come on and go off
If you unplug the high pressure switch the fan will stay on regardless if the a/c is on or off. The switch was 22 years old and could be getting a weak contact inside, it's a cheap and easy process of elimination place to start.
Do you have a manual fan switch on your dash? Check that it's off, then check the fuse for that circuit (might be called clutch fan). I went thru that years ago, found out it was the hot wire going to the fan clutch actuator had rubbed against a lift ear and was grounding intermittently, blew the fuse. My clutch fan was a fail-safe engaged, so you wouldn't overheat the motor, but for the week or so before I got it sorted out, she chewed through a lot of extra fuel turning that big windmill up front.
Stan Patterson My truck whenever I drive it 60 mph the spins ok but when I bump the speed to 65 mph or over the fan start spinning fast and loud and stays on until I slow down back to 60 Mph I changed the solenoid and fan clutch but still the same, what do you think you will the my friends
Gordan, can you let us know if this fixed your problem. Research shows its a "coin flip" whether replacing the AC High Pressure Switch solves the problem. Thank you sir.
Run the ohm's on the coolant, oil, fuel, air temp sensors. On your year all go to the Ecm. Do you know your air clutch Brand name it and is your Air Valve normal open, or closed for the fan to engage. Fans are air engage spring disengage, or spring engaged and air disengaged.
One that I had experience with (was a Horton) was spring-engage, air-disengage. If you fired up the truck with an empty air system, the fan would turn until air pressure came up to disengage. My problem revolved around a hot wire that had rubbed thru and was grounding on a engine lift hook or something, blowing the fuse, causing the fan to be permanently engaged with no control. Of course the first fuse that was replaced, held for about 25 miles before the short under the hood happened again. Finally figured it out, and used some wire loom to help shield it from rubbing and reoccurring, but man, did that sucker chew through fuel with the fan always on. Failsafe, better to use more fuel with fan failed engaged, than to fail disengaged and overheat when pulling hard up some mountain somewhere...
@Gordon Roberto man I really I have that issue right now my truck is 07 century and last couple days no ice no heat😰😰 now I’m in Macon GA loves truck stop on I-75S but winter coming it ain’t gonna be that pretty. Like u said I might need to put a lot of free on. That little valve u holding. 😭😭😭
So earlier today opened the hood to check that fan clutch issue I was having. So I touched the wires on top for the ac compressor, the fan suddenly turn on and stayed on, turned off the truck hoping it will turn off that didn’t work, turned the key to the on position only noticed on the dash the fan light is on, anyways I just shut my truck off and went to sleep. Once I woke up I turned the truck on at idle the fan will kick on and off, once I started driving the fan stayed on, got to highway speed it started kick on and then kick off for like 5 seconds then kick back on again. Then after 20 miles it kicked off on for like 30 miles but whenever there is a uphill or if I throttle it hard the fan kicks on, so right now the fan is off but whenever a uphill or whenever the truck has to throttle it’s self hard to stay at cruise speed the fan kicks on then turns off after that. Yeah I know kinda confusing and weird. Remember ac is off the whole time, temperature is at 180. Does anyone experienced this before and where should I look
I knew the reason my fan was coming on even when cold was because of the AC high pressure switch. I liked how you explained to follow the lines. Thanks for the great information!!!
Thank you so much...my truck fan was non stop working. Now fixed really appreciated your help 👍
Thank you for this... I think this may be my problem. I was worried the Freon would escape if I tried to replace the switch myself... I'll stop in and grab one ASAP now... Thank You!
God bless you for posting this video, and how you point out the line to locate the account pressure switch
Hey Gordon . Thanks for all the knowledge you provide . Turn n burn
Thank you for watching.
Hi Gordon.. I watch your channal for long time.. Learned a lot from you... Thank you sir.. for share these hopefully you have every thing fixed and drive your dream truck on the road.. I am from Fort McMurray alberta canada
Thanks for watching.
My FLD has fan clutch so fan all the time is locked up and operated by ecm, water temperature sensor and AC high pressure sensor, I have manual switch on my lower dash as well. Watertemp sensor and funclutch solenoid (air solenoid) both are normally closed, all work great. On idling and AC on I'm always flip that manual switch because it's been start/stop the fan every 1 minutes or even less that not good for clutch which start spinning from 0 to 500 or whatever. Friend of mine told me bigger AC condenser will solve it but I have no reason to change it. God bless you old man and stay safe out there. Peace out
A bigger compressor will not fix it, I think you have a problem with a sensor/ connection, or wiring problem. Good idea to leave the fan on until you get it fixed. Thanks for watching.
Amazing video 👍
Good afternoon Mr. Gordon, I want you to know that I enjoy your content, By the way brother I didn’t know you were a car mechanic Interesting, Thank you once again for the little detail of the helpful hint, I remember when I was 15 years old a uncle of mine used baby oil to loosen up a card with a would not come open, So it’s interesting I guess with nothing surround like WD-40 or PB blaster, saliva or Johnson’s baby oil whatever we can put in there to make it smooth would work, thank you once again this is Robbie from Fort Myers Florida, 👋👌👍✌️
Thank you so much! It helped a lot!
Hi Gordon - quick and easy fix - hope it worked out for you -
So informative, thank you
Thanks Manuel.
Anytime a man has Channellocks , listen to him ! Got to be brand name too, they don’t make any others.
Same thanks for the info
Did this fix the problem?
Could this switch keep fan from coming on to
looking for that same solenoid cant find it at freightliner, my old solenoid say FLJIKOKI, any idea were i can find it
if your Freightliner doesn't have that then go to another dealer, that part shouldn't be (isn't) hard to find.
My Trinary switch broke in half on top of my drier can just replace it like that?? With out losing my freon??
yes.
Did this solve your problem?
Hello there, where does the low pressure hose that is use to put freon goes? To the suction port of air conditioner compressor or the discharge size?
@@57bagre Thank you very much I had them backwards and compressor was kicking on and off every second I hope that was my problem
I’ll try to do a new video on that soon. I have a pickup that needs A/C work, I’ll try to do that next week.
@@57bagre I will be waiting for it, thanks again
Thank you
On my 2011 international had the same issue I already changed everything selenoid and A/C and still doing the same thing fan clutch still on
I drove a freightliner day cab with that exact series motor . A 60 series . It was a 400hp. I drove the shit out of that little truck. Tri state. All four seasons. I loved that little truck . Ufourtuonyley for me and the truck the owner of the truck was not big on maintenance. Coming out of Indy on my way back to Chicago it ate a valve and locked up. I heard it and shut the motor off. My POS boss told me to try and make it back home lol. I told him, the motor is DONE. Anyhow, I got about 200 yards and the motor locked up. The truck ended up sitting in the yard. Too bad, I liked that little truck
I prefer an older vehicle that's well maintained as to a newer one that few people know how to work on it.
And the result is? Another couple of minutes of video could have shown the result.
The result is fan will stop coming on if you were watching the beginning of the video... Or in the case I'm dealing with a high pressure switch is causing my system to shut off when it needs to be running.
Anyone knows part number on this ?
Freightliner near me cant find it
I have identical truck fld 120 with same motor/ year
Thanks
We tried to replace the switch but freon comes out and we didn’t replace it. So you know why freon comes out and which part we have to replace. Thanks
Freon shouldn't come out, maybe just a little when you start to loosen the switch. There is a schrader valve in the port where the switch goes, if somebody took it out then you need to evacuate the system and replace the schrader valve to change the switch.
@@57bagre Thanks bro..
If the ac was not on I dont think that was the issue. ECM ground ambient air temperature to high multiple things can cause the fan to come on and go off
If you unplug the high pressure switch the fan will stay on regardless if the a/c is on or off. The switch was 22 years old and could be getting a weak contact inside, it's a cheap and easy process of elimination place to start.
The Master
Thanks Alex.
The Schrader valve came out when I was unscrewing the switch
Was that the fix? I have an ISX 871 and my fan never stops. Even with AC off.
I don't know yet, I just put it on yesterday 10-27-18
Do you have a manual fan switch on your dash? Check that it's off, then check the fuse for that circuit (might be called clutch fan). I went thru that years ago, found out it was the hot wire going to the fan clutch actuator had rubbed against a lift ear and was grounding intermittently, blew the fuse. My clutch fan was a fail-safe engaged, so you wouldn't overheat the motor, but for the week or so before I got it sorted out, she chewed through a lot of extra fuel turning that big windmill up front.
@@stanpatterson5033 no manual switch but I'll check fuse thanks
Stan Patterson
My truck whenever I drive it 60 mph the spins ok but when I bump the speed to 65 mph or over the fan start spinning fast and loud and stays on until I slow down back to 60 Mph I changed the solenoid and fan clutch but still the same, what do you think you will the my friends
@@professionaltruckdriver243 my truck is doing exactly what yours is doing did you fix the issue?
It says saliva is perfectly fine in the book :)
I think I saw that in my book too.
Gordan, can you let us know if this fixed your problem.
Research shows its a "coin flip" whether replacing the AC High Pressure Switch solves the problem. Thank you sir.
I see a lucrative market for driveway mechanics everwhere that would buy spray cans of Robertson Saliva.
Maybe you got something there! Thanks for watching.
Run the ohm's on the coolant, oil, fuel, air temp sensors. On your year all go to the Ecm. Do you know your air clutch Brand name it and is your Air Valve normal open, or closed for the fan to engage. Fans are air engage spring disengage, or spring engaged and air disengaged.
One that I had experience with (was a Horton) was spring-engage, air-disengage. If you fired up the truck with an empty air system, the fan would turn until air pressure came up to disengage. My problem revolved around a hot wire that had rubbed thru and was grounding on a engine lift hook or something, blowing the fuse, causing the fan to be permanently engaged with no control. Of course the first fuse that was replaced, held for about 25 miles before the short under the hood happened again. Finally figured it out, and used some wire loom to help shield it from rubbing and reoccurring, but man, did that sucker chew through fuel with the fan always on. Failsafe, better to use more fuel with fan failed engaged, than to fail disengaged and overheat when pulling hard up some mountain somewhere...
@@stanpatterson5033k910okoow
7948❤and 😅
@Gordon Roberto man I really I have that issue right now my truck is 07 century and last couple days no ice no heat😰😰 now I’m in Macon GA loves truck stop on I-75S but winter coming it ain’t gonna be that pretty. Like u said I might need to put a lot of free on. That little valve u holding. 😭😭😭
It's a cheap part and as you can see, it only takes 5 minutes to change it once you know where it is. Thanks for watching.
What part would I need to change if my truck is blowing hot moving but cold sitting still? Can’t figure it out.
Sounds like the system is over charged. I'm not a mechanic but I've had similar problems before
My Cascadia did that with bad low pressure switch.
So earlier today opened the hood to check that fan clutch issue I was having. So I touched the wires on top for the ac compressor, the fan suddenly turn on and stayed on, turned off the truck hoping it will turn off that didn’t work, turned the key to the on position only noticed on the dash the fan light is on, anyways I just shut my truck off and went to sleep. Once I woke up I turned the truck on at idle the fan will kick on and off, once I started driving the fan stayed on, got to highway speed it started kick on and then kick off for like 5 seconds then kick back on again. Then after 20 miles it kicked off on for like 30 miles but whenever there is a uphill or if I throttle it hard the fan kicks on, so right now the fan is off but whenever a uphill or whenever the truck has to throttle it’s self hard to stay at cruise speed the fan kicks on then turns off after that. Yeah I know kinda confusing and weird. Remember ac is off the whole time, temperature is at 180. Does anyone experienced this before and where should I look
I have same issue on Volvo. How did you get it fix.
How did you fix it?
My pete is doing the same it does it more often when cold ac off or on the clutch fan trigger is coming from the ac system hopefully I can fix it soon
Well Hell... just replaced mine and it wasn't the problem... Oh well, it was only 22 bucks, so no biggie..
K
Too much water
My fan just came.on thw other day for mo reason wouldn't shut off till.i got to the yard o thought it was the solenoid fan cluth
Did this fix the problem?
Thanks