You are right. Finding a trust worthy mechanic is near impossible. I went to Thermo King, they said I needed a new fan. Without thinking I said sure. They charged me $326.00 for a new fan. Same fan/ model number on Amazon....$99.00. my total bill was $1,800.00 and the unit still wasn't working correctly. If you're an Owner Operator and still working I wish you the very best of luck! Looks like it's going to be another tough year 2023. Owner Operators......we need to help one another! Do your best to lend a helping hand to other Owner Ops. We are all brothers (plus some Sister's) trying to make it. Everytime we turn around, someone is putting their hand into our pockets. Be safe!

For everyone watching this, DO NOT BUY AFTERMARKET alternators, aftermarket alternators will not be recognized by the apu and it will overcharge the system and the alternator will get extremely hot, don't waste your money and get urself the OEM alternator, it's expensive but it will work, labor wise it's very easy and it only took me 45min

In combination of what this gentleman did, I had these problems for the last 6 years. Check your APU fuse box under the bunk. If the green light in the APU fuse box is fast blinking like 2-3 blinks per second it’s a fuse problem. If the fuse is abt 1 second blinking fuses are ok. Also, change your blue filter abt every 6 months. Keep stuff away 6inches from that blue filter. Also open the inside of where that blue is and make sure no bolts/screws are lose.

Thank you, Sir I just fixed my TK APU after watching your video. 🎉

Thank you so much for taking the time to show me how you fixed your alternator problem. This same error just started showing up on my tripac diagnostic program this evening. I’m gonna try and do what you did as soon as I can and see if that fixes my issue too.

My friend you save me a lot of money. Ground wires was rousted. Did clean it with a wire brush and working again. Great video Thank you very much 💯💪🏼👏🏻

Very glad I watched this. Thank you!! Didn’t know Thermoking had this app available.

Not only was this incredible information about the free program that you can download it look at everything with your unit, but it was also the exact same problem with mine. Not lose connection, but broken ground wire.

Thanks, bro)) Turned the ignition, checked the guage on the battery charge, on my truck, and figured that there is no charge. Did not though that alternator might cause this... well, it might, but I did find out from this video. Cheers. ✌

Thank you for this video. I am an owner operator and i am having that issue. And i try to repair all my own stuff. This helps me out a lot.

Awesome! Thanks for the info!! Had no idea thermoking had that file online!!!

Awesome help. Thank you for sharing this. Ill give it a try with my TK APU.

I had the Same problem but I don’t know if I can fix it myself. As you said there is no honest Meckanick,I gave up on APU because of them. But your video definitely good and i will try my best to try it. Thanks

Thank you sir great video I have to same problem I got the software part now I’m gonna wait until the morning to check the alternator connection 👍🏼

Helpful video, Thank you.

Glad you got through that! So expensive at dealership.

I know this is a older video but I just want to throw this tip out there. Check ur battery's, there is also a wire that has a eyelet buttconnector that goes to the starter. Lil black wire and has a inline fuse. If u come up on top and pull the wire it may pull right out. U can add a longer wire and eyelet down to the alternator on the power stud that will fix a red triangle issue and or voltage issue. Also I see alot of ppl on forums talking about swapping there 65 Amp alt to a 120 thinking they will get more power. This will NOT work. It will only throw a code and shut the apu off. U have to put the right alt on there. If ur not sure look at the pulley size om the alt. I'm not sure what is what but it's on the web. U can also look at the fan on the back of ur cab. If it has a sensor ziptied by the air dryer. It's a temp sensor or looks like one if it has that sensor then it's a 120 Amp alt

Thank you so much for your good video. I dont think that's my issue but might be someday.

Interstate batteries are the best. Appreciate the video

Mine just started acting up and the download info is invaluable! Thank You Sir.

Very good info! Thanks! I believe I can fix mine now that you pointed out some circuit connections...Checking the ground is very good advice! These units are very prone to corrosion on the electrical connections. Thanks again! I noticed your voltage was 11.7 or something like that, it should be 12.8 to 14.2 vdc.or so. Maybe your batteries were dead?

Awesome! Thank you so much!

Well purchased some Alied battery and replace then myself jaja and it's been a few years now and they have been working fine ever since. So they worked for me and I would go straight up to then when I need some more. Some batteries are so expensive.

Thank you for your brief thanks

Thanks great info

Thanks for sharing. 🙂

Thanks man

Thank you for sharing

Thank You Sir

Your awesome, you saved me 500 bucks exactly my problem….. what charity do you support I’ll donate in your name…. Thank you

Thank you sir

hello when the alternator fails can the fans turn off? I ask him why I get the ALT fault code

It's always good idea to replace all 4 batteries together. Putting only 2 new batteries will make those batteries carry most of the loads and thus work harder than the 2 old ones. In the end the new batteries won't last long and you end up spending more money. There's only 3 battery manufacturers in the US so pretty much they just slap their company brand name(Napa, DieHard, etc) to it and claim it's better than the other. Little that most know it came from the same manufacturer.

Thank you for sharing. Do you have the link to download this software, I could not find it online. Thanks!

It may be that the malfunctioning alternator caused your batteries to fail. There is only one or two battery manufacturers and everybody just puts there own label on them.

I have a similar issue except its not throwing out any error codes. In your case was the alternator engaging at all? I can see my belt moving but the clutch thing never rotates. The fan at the top of the tractor only comes on for a few seconds and then immediately the system shuts down. Does this seem like an alternator issue?

Very good 👁

Thank you for sharing because I'm having the same problem. Had it serviced but they did not share with me the software.. where did you buy your Freon? Did you get it from thermo king? If and when you get some down time will you share another video on how to install your Freon.. Thank you

hello myfriend where did you get that j39 USB cable for diagnostics on tripac

Thx

Good video Can you please make a video how exactly the service tool software can be downloaded and installed on the computer Thanks

Thermo king mechanics are trained to walk away and work slowly in order to bill you for unnecessary time.

Thxful. Video did u have diagnostic software for share¿ thx man

Can I get the site were you got this app I can not find it

Thanks

Can yo share. The website. Where to get the software please

Check out Trucking with Ryan on KZfaq. He is a very honest mechanic based in OH. Thanks for posting, I’m having issues with my Tripac ATM so will look into your suggestions. Hopefully I can resolve.

Time stamp 2:13 I saw an orb above your control pretty cool

Ty

You mentioned the horrible batteries you bought from Freightliner… I don’t know if you are aware of this and we learned the hard way, you never run your Thermo king. And the truck at the same time. Always use one r the other, because it will destroy by your batteries and in some cases it caused the batteries to explode. Thanks for the trouble shooting advice. On your computer at the bottom it read, engine coolant temp too high. I just shut down and tried to start it and it died each time. I wonder if that has an effect on it. Laurel

Where can I buy the usb cable ?

Do not start your TP with your mains off did that n now it keep shutting off red triangle

Were you connecting the laptop to the APU?

Sir you download this app i din't find app yet can you tell me how i download plz

So it's basically a ground issue... gotcha thanks

2300 rpm isnt that kind a high?

God bress u

I don't believe that you can find the app without thermo king license. Where is the link?

Where to download the software at

Can you please show us how to download app.? I spent 3 hours looking through thermalking web & cannot find it

Wow took forever for you to get to the point, why.

Please give me the site address, I could not find the app

My loptap is windows 10 n I can't download the program cus need to be older then windows 10

bro, go on db electrical and get you an alternator, $80. dont pay $400 for thermo king shit, save your money. it's the same one, they fit.

I'm getting code 35. Completely lost on that one.

Your battery problem is not because of the brand of battery you bought. There are only two manufacturers in the US making car and truck batteries, and they are the same good quality. Every battery brand you see is just one of those two with a brand label on it. The only exception would be odd products like gel cell batteries ore big capacitors pretending to be batteries,

What cord???????

That is a long video to say "tighten your ground cable"

Get your parts from Thermo by products

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