Brake help! - odd problem (as usual for me)

Did you ever end up replacing the vacuum line going from the booster to the intake vacuum source itself?

Maybe it's simply a matter of a rubber line deteriorating over time and not being able to hold it's shape and temporarily collapsing?

Thanks for the suggestion. Most of the vacuum tubes were replaced with silicone but that one I believe is still original. I will look into that but pulling the vacuum is not an issue, it is more
like the release of vacuum is not happening when it is supposed too.

Maybe I'm not considering the operation of the booster correctly. What I was thinking is that once the booster has it's vacuum established via it's internal diaphram, a vacuum tug of war then takes place between the booster and the engine/intake vacuum that temporarily keeps the connecting vacuum line collapsed.

To be honest, I am not sure myself, indeed you may be right. I really had very little experience with brakes prior,,, it has been a very good learning experience !

Read through this one recently and wondered if a misadjusted brake pedal might still be a possibility in your case. It happens apparently.

928registry.928oc.org/forum/928-oc-techn...-front-brake-seizure

FIXED<<<<<< Finally
Indeed (thanks goodness) it was the Brake Booster - If you have followed any of this thread we tested and worked our way back to the point that the only thing left was the brake booster. After almost a year and a 1/2 I finaly got it replaced. Just taking it out took about 1.5 hours! It is a real pain on par with the dashboard and front nose I think ... HA

I am going to a HPDE at the realtively new Domion raceway in Fredericksburg April 1st with the Va Bch PCA so I cannot wait. I have been drving minimally just to keep it road worthy with no boost hooked up. Now to ensure it is in shape for a short track day.

Needless to say I have missed the board and my car quite a bit. Although during that time, getting a new 2016 Mustang GT with performance pack has lessened the pain LOL

But I am ready to get back to Sharks in the Mountains and the Frenzy this year