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My brake peddle goes soft while at a stop, yeah I thought that too,master cylinder? No it has no leaks any where full of fluid and all pads and shoes are new...took it to the Dodge Dealership i purchased it from they said its fine . now keep on mind this happened only some times ..wth ???

 

Welcome to the Forum, Internal Master Cylinder Leak.

 

That happens when you get older...

Seriously: It could be an internal leak, but it could also be a little air in the system. What year? If a few years old it would benifit from a pressure flush anyway. It will get rid of any air or water in the system.

 

Welcome to TW.

Try flush and bleed as Jimmyh suggested.

 

Welcome to TW. So it feels firm and then goes soft after sitting at a stop? Or does it feel soft in general. If it is the later I'd make sure the rear drums are properly adjusted, can make a big difference. Also if going to a dealer, I would go to a Toyota dealer that is framiliar with the truck, not Dodge.