2001 w900 stuck in high range, where do I start? I dont think its anything mechanical as the transmission shifts fine and doesn't make any noise while driving. Sometimes I can get it out of high range but it will just get stuck in neutral, it never goes into lo range, but I can flip the selector up and hear it click into high range. I have a load to deliver Tuesday, dont think thats happening now.
13 speed stuck in high range
Discussion in 'Trucks [ Eighteen Wheelers ]' started by rydr, Jun 27, 2021.
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Check your air lines on the trans one may be blocked pinched or cut
Or if you recently had it worked on, they may have hooked up the lines wrong
Or if your truck throws a lot of oil, the valve may be stickingHulld Thanks this. -
What kind of transmission ?
Worn shifting forks ? -
If the air side checks out ok it may be internal. A broken synchro pin can keep it stuck in 1 range.
Dino soar, wore out and BoxCarKidd Thank this. -
The transmission was rebuilt then the truck sat for 3 or 4 years. Pulled it out of the parts truck and has been in this truck for about 6 months
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Dino soar and spsauerland Thank this.
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Wonder if the air regulator on the transmission is failing. Transmissions run at something like 70 PSI.
Dino soar Thanks this. -
I used shop air at 120psi. I think im going to replace the slave and splitter valve tomorrow. Everything is closed around me today
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Check pressure to the active hose when it will will not shift. Sounds like broken pins as AModel mentioned.
That other stuff is just throwing money at it if you do not do tests.spsauerland Thanks this.
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