2019 579 Transmission Fault

Atvtrailrider

New Member
My 2019 579 with PACCAR drivetrain has been intermittently going into transmission fault mode when moving it around to docks. This is new since the last service? Seems to have to do with shifting before it completely stops? Anybody else have this issue?
 

r3gulator3

IMA KEEP IT REDNECK
Supporter
My 2019 579 with PACCAR drivetrain has been intermittently going into transmission fault mode when moving it around to docks. This is new since the last service? Seems to have to do with shifting before it completely stops? Anybody else have this issue?
I can’t say I do and I have zero experience with PACCAR drive train. My Eaton auto in my 2018 will geek out usually when I start it and make it fault and not go into gear. **** it off restart and it’s fine. I also have a Cummins engine so. Sorry wish I could be more help.
 

halll1994

New Member
Have you found out what was causing it? I have a 2020 and itll go into trans fault randomly and peterbilt cant find out why.
 

r3gulator3

IMA KEEP IT REDNECK
Supporter
Talking with a couple guys at the TMC shop they are replacing the trans harness and updating software and that seems to cure it.
 

Fins

Well-Known Member
If you have to have an autobox, why don't these companies simply go with the tried and true Allisons? They are bulletproof, light, can be used up to 2100 ft lbs of torque and can be had in a variety of ratios and speeds.

I was recently employed by a company that had both Eatons and Allisons. The Eatons were always OOS due to faults in the transmissions and software. The Allisons went merrily on with no issues. The only problem those trucks encountered were the junk Paccar engines. Like the Volvo engines they could get the EGR's to last over a few months.
 

r3gulator3

IMA KEEP IT REDNECK
Supporter
If you have to have an autobox, why don't these companies simply go with the tried and true Allisons? They are bulletproof, light, can be used up to 2100 ft lbs of torque and can be had in a variety of ratios and speeds.

I was recently employed by a company that had both Eatons and Allisons. The Eatons were always OOS due to faults in the transmissions and software. The Allisons went merrily on with no issues. The only problem those trucks encountered were the junk Paccar engines. Like the Volvo engines they could get the EGR's to last over a few months.
They don’t want the weight of an actual automatic, you know the ones that actually work like they’re supposed to. So they go with an automated manual. That extra 300 pounds of freight they can put on the trailer cuts into the bottom line.
 

Fins

Well-Known Member
Three hours of the truck sitting in the shop for a simple reflash will lose more than 300 lbs of freight will make you.
 

Fins

Well-Known Member
But I do 'leave myself an out'. ;)
 

r3gulator3

IMA KEEP IT REDNECK
Supporter
I drove plenty of trucks with Allison’s in them in the army, I ain’t knocking them. But megas set the industry standards so automated manual it is.
 

Fins

Well-Known Member
My company specs the trucks for where they'll be running. Me? I'm a flatlander here in FL., so I don't get the big motor anymore. About 5 years back they decided that a flatland truck doesn't need a 550 and a 15. So, I get an itty-bitty four-fiddy and a ten. No dawg-a-matics, though.
 

Rigjockey

In Gord we trust!
Supporter
Three hours of the truck sitting in the shop for a simple reflash will lose more than 300 lbs of freight will make you.
If you are going to be realistic about things, you will never be management material. :D
 

Fins

Well-Known Member
If you are going to be realistic about things, you will never be management material. :D
Been there, done that, got the T-shirt. Managers are just scapegoats when the drivers screw up on the road.
I'd rather be alone in the truck in all honesty. I can talk to myself all day and never get a stupid answer. :rolllaugh:
 

Electric Chicken

Well-Known Member
Supporter
Been there, done that, got the T-shirt. Managers are just scapegoats when the drivers screw up on the road.
I'd rather be alone in the truck in all honesty. I can talk to myself all day and never get a stupid answer. :rolllaugh:
I talk to myself all day and get nothing BUT stupid answers.
 

Fins

Well-Known Member
That's because you ask yourself stupid questions. Waddayawant?
 
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Fins

Well-Known Member
I guess I missed the key wording in the sentence. That was 'ask'. Some days, I can't even be a smarta$$ correctly.
That's because you ask yourself stupid questions. Waddayawant?
It's fixed now. Care to answer again? :headscratch2:
 
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