Brakes Self Apply

iammattv · February 13, 2009

This is my first post, so I hope I'm in the right place. I have a 2001 3500 6.0l with hydro-boost. While driving, the brakes slowly apply themselves. I can release them by bleeding a little from the master, then drive and repeat. I suspect something to do with a valve in the hydro-boost, but have little diag info available to me right now.

Any help would be greatly appreciated. Thanks in advance. I searched the forums here, but found nothing related.

Draenor · February 13, 2009

I haven't mess with thees too much. IIRC that the power steering is run off it. Maybe that could be part of the problem?

I'll have to do a bit of digging on this one.

*edit* Have you tried flushing the system?

iammattv · February 16, 2009

I haven't mess with thees too much. IIRC that the power steering is run off it. Maybe that could be part of the problem?

I'll have to do a bit of digging on this one.

*edit* Have you tried flushing the system?

Problem was consistent and all brakes would lock. Power steering fluid was not in too bad of shape, but flushed anyway. Installed new hydro-boost and problem solved.

Thanks for your reply.