3mph brake dump?

[CEEEEE]

Fellow RAM owners - I have an annoying little issue that I'm looking for some help with..

I have a 2016 Laramie. For what feels like the past year in general driving conditions I can be on the brakes at a reasonable pressure but at 3mph (pretty reliably) the brake pressure dumps then recovers, causing the truck to lurch forward and recoil as it comes to a stop. This does not seem to happen under heavy braking. It. is. obnoxious.

Engine revs do not change when this happens.

And it appears to not be there when I remove the ABS fuse. This, obviously, isn't a reasonable fix.

Has anyone had something similar happen?

Previous google searches have come up with 'abs dump valve' as a cause - but I can't find that part. The pump itself seems to be working. Would this be a control module issue?

Thanks in advance for any help!

 

[crash68]

If it doesn't happen with the ABS fuse pulled, it's possibly something causing a wheel speed sensor to give a false reading and the ABS tries to kick in.

 

[CEEEEE]

That is a good thought and I'll start exploring down that rabbit hole. Thank you!!

 

[E7K0629]

Hi, new here but this seems similar to an issue I'm having on my 2012 1500 4x4 Sport with 85K miles (not the original owner). During normal driving/braking, I get a nice bite on the brakes with very little pedal pressure or movement. But if I'm slowly riding in heavy traffic gridlock or trying to ease down a hill where I have to keep my foot on the brake for a minute or more, the pedal sinks to the floor and I lose nearly all braking power. Then as soon as I let up on the pedal or pump it once, brakes return to normal.