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Discussion Starter #1
So this is my problem, sometimes when i go to pass people or just get on it my truck seems to down shift and red line then wont shift back up i have to shut it off and restart it to shift right again and when this happens i never see any codes. Anyone else have this happen or know what causes it?

ty buster
 

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4,585 Posts
I would check your fuel filter... It sounds like a tranny limp but not if there are no any codes.


Sent from my Autoguide iPhone app...
 

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The diesel needs fuel to operate correctly, and the dirty fuel filter will affect the trans operation. Change the filter and it should help the trans shifting.
 

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Its just a worktruck
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What mods are done to it? Please fill out your signature so we can help diagnose the issue.
 

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even with a clogged/shitty filter, if you're hard in it, it would mostly likely throw a low rail pressure code... X2 on what Chris said
 

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Discussion Starter #6 (Edited)
took the truck to merchant auto in zeeland this morning to get some work done ill see what they have to say. ty for the replys
 
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