[Logo] GDE Forum - Home for the best in diesel powertrain tuning
  [Search] Search   [Recent Topics] Recent Topics   [Hottest Topics] Hottest Topics   [Top Downloads] Top Downloads   [Members] Member Listing   [Groups] Back to home page 
[Register] Register /  [Login] Login 
Messages posted by: Brambles
Forum Index » Profile for Brambles » Messages posted by Brambles
Message
This truck is bone stock
I live in very mountainous terrain of Western Canada.

what I'm experiencing is when decending steep forest service roads in 1st gear, normally in low range, but it happens in high range 1st gear as well.

I stop at the top of a steep section, put in 4low 1st gear and start down the hill, holdback is ok for a diesel but not as good as one might expect with such a steep 1st gear. Once the RPM's increase over 1500 it's like the truck automatically throttles itself up, the fuel consumption gauge shows increased fuel consumption and the truck quickly accelerates forward on its own, at approx 3000 rpm the fueling stops and the truck slows back down.......depending on the steepness and length of the hill I'm going down, it will continue this cycle of self accelerating and decelerating. I have not touched the throttle or brake through this.

It will also do it in 1st gear high range,

This is sporty on dry roads and could be life threatening on snowy or icy roads.

Since you've seen the guts of how these things are are programmed could you offer an explanation of what's happening and if your capable of tuning it out?

It also happened similar in my 2012 ram 1500 hemi but I would have to blip the throttle manually to get it to slow back down. The transmission seems to do a good job of holding and slowing the truck back down...

Thanks

 
Forum Index » Profile for Brambles » Messages posted by Brambles
Go to:   
Powered by JForum 2.4.1 © 2015 JForum Team • Maintained by Andowson.com