22 freightliner

[5030]

One thing that most users that use diesel in their tractors as well as their pickup trucks with diesel engines is..

Refiners add a percentage of bio-diesel to all their diesel products and why it's pertinent to use an additive like Power Service or Bio-Kleen to keep the organisms that grow in storage diesel at bay.

 

[neilpaku]

If the transmission shifts by itself automatically, by definition it's an automatic. That's the part that automatic; not what type of gear train it has. Remember that a layshaft transmission can be automated, and a planetary transmission can be completely manual - e.g. non-automated powershift on a tractor only changes gear if the operator commands it.
To the original poster, there's a fellow on youtube called "watch wes work" that would enjoy fixing what "all the shops" couldn't fix. You could give him a call

 

[4570Man]

Transmission slipping?

The clutch maybe but the transmission has actual gears the same as a manual.

 

[Deanes]

I operate a 2022 cascadia and no one can fix a problem. It will start to shudder and stall out with a load on. It doesn't throw a code but it's getting worse. If stopped at a light and go to drive it will have no power and begin to stall out and shake. This will last a few seconds and then it will be fine. It's a automatic with a Detroit. Around 3k on it. Any idea since the mechanics can't figure it out..

There are all the symptoms of a fuel line blockage. My guess is the tank outlet. Break the fuel line somewhere between the tank and the engine, and use a compressor to blow air back into the tank. That should solve the problem, at least temporarily. Next time it happens, you will have confirmation that the tank needs cleaning out.

 

[George2615]

As Shady Oak mentioned it just shifts automatically so it's still technically a manual transmission. Unfortunately it's all "drive by wire" now. It probably has to do with a sensor between the fuel pump and the clutch actuator? To where the computer has issues where it can't decide to give it gas or release the clutch? They won't sync up maybe? Computer issues.
Not a filter problem as it idles and you have no issues at speed. In a semi you definetey will know when you have a filter problem.
I got out as they were getting popular so can't help you much there.

You have 500hp so unless they de-tuned it it should have very little problem pulling 80,000 lbs.

And by the way, for anyone that's been gone a while from driving, if you take your CDL driving test in an automatic semi it is now basically an endorsement?
Meaning, if you take your driving test in an auto tranny you cannot drive a manual trans semi. You will have to retake the driving test in the manual trans semi in order to drive it "legaly". You can drive either one if you took your driving test in a manual trans semi.

I tried REALLY hard to talk my kid out of driving a semi and the year after he got his license they went to the dual CDL license. This was like 6 or 8 ish years ago, I don't know if it's changed again or not.

My only problem during my brief time with our "autos" was I got stuck in stop and go traffic about a mile from a major turn off and the computer decided to have a conniption fit with the shifting, stop, shifting, stop of the traffic. It just decided to not shift at all and all kinds of lights came on. And of course the traffic decided to clear up and now traffic is driving by me on both sides at freeway speeds.
Being a computer I guessed that turning the truck off for a minute or so and restarting the truck would fix it and I was able to drive it again.

Same here. Retired buddy of mine got his CDL B to drive school bus. He can only use it on automatic bus or truck.