Brake problem

[Draven94blackbird]

so i put a new rear in the '97 and converted the drums to the disk. i flushed the fluid and eveything but i fell that the pedal is soft and isnt stoping like it use to. any ideas couse im stumped and i can't take it anymore.

[Firebird67dude]

You bled the brakes right? If u want help give me a call. Im free till 6 pm tomorrow night.

[BonzoHansen]

Did you change the prop valve too?

[Draven94blackbird]

thanks guys but i fixed the problem. i vaccum bleed the system and it all worked out.

[Batman]

Did you change the prop valve too?

Still a valid question, you need to have the right Prop valve even if you have a good pedal. I am pretty sure they are different for rear discs.

[BonzoHansen]

Still a valid question, you need to have the right Prop valve even if you have a good pedal. I am pretty sure they are different for rear discs.
Correct.

[Draven94blackbird]

so i called pontiac to ask if there were 2 part numbers for the valve and they told me that it was the same part number for disk and drums. i thought the same think about the valve but i remember once reading that to save money gm just compincated with a diffrend wheel cylinder

[BonzoHansen]

I got $2 that says the parts guy was wrong.

[Draven94blackbird]

i will try another place tommoro

[BonzoHansen]

Ask about master cyl and prop vale - wait, does this have one of those large ABS units? Do they even have prop valves? I've never looked that closely at 4th gen setups.

[Draven94blackbird]

yea is abs that is why i think it was the same. it does have a valve but its mounted together with the unit

[Savage_Messiah]

In 4th gens it's the same prop valve for disk or drum

[WildBillyT]

In 4th gens it's the same prop valve for disk or drum

Is there also a residual pressure valve?

[BonzoHansen]

Is there also a residual pressure valve?
....maybe in the MC?

[Pampered-Z]

....maybe in the MC?


he he he - I think your - $2