Replace the power brake booster?
#1
Racer
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Replace the power brake booster?
I have a hiss when I apply the brakes and I have to stand on them to stop. Since the brakes still work and no leaks I assume this is a booster only that needs replaced. Has anyone done this? How long should it take? Do I have to take out the dash? Any experiance is greatly appreciated.
#2
Re: Replace the power brake booster? (mogulmike)
Sounds like your booster is gone. I did this several months ago. Took about 4 hours. Hardest part was getting to the nuts up under the dash that hold the booster on. The shop manual outlines the procedure real well. I had to buy the replacement booster from Chevrolet (couldn't find one aftermarket). I got mine for aboput $260. new. IM me if you need help.
#3
Re: Replace the power brake booster? (mogulmike)
I bought mine for $106!!! Check CSK on the web--they still have them but THEY HAVE JUST NOW GONE OUT OF PRODUCTION!!! Get 'em while they're hot...er...cheap!
#4
Melting Slicks
Re: Replace the power brake booster? (C-4 Cross Fire)
Just did mine. Got it from advance Auto for $ 98 with lifetime warranty. It's metal so maybe it will handle the heat from my headers better. If you are of large proportion like myself, do youself a favor and take the seat out. Also, make sure you have 1/4" extensions.
#5
Team Owner
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Location: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
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Re: Replace the power brake booster? (mogulmike)
Yup, undoubtedly a brake booster. :yesnod:
If it gets worse, it can stall your engine upon hitting the brakes. How'd you like to have no power brakes AND no power steering! :eek:
If it gets worse, it can stall your engine upon hitting the brakes. How'd you like to have no power brakes AND no power steering! :eek:
#6
Drifting
Re: Replace the power brake booster? (mogulmike)
I have a hiss when I apply the brakes and I have to stand on them to stop. Since the brakes still work and no leaks I assume this is a booster only that needs replaced. Has anyone done this? How long should it take? Do I have to take out the dash? Any experiance is greatly appreciated.
#7
Racer
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Re: Replace the power brake booster? (mogulmike)
That's it! I am blaming you guys. I never even heard of a power brake booster and now I think I caught the disease from this post. Last night when I got in the car and started it, I heard a hiss. Sounds like air escaping under the dash and the pedal gradually sinks as air escapes? Is that the PBB? I had my master cylinder replaced about 6 mos ago. Damn. And they say vettes are inanimate...
#8
Racer
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Re: Replace the power brake booster? (mogulmike)
Ordered my booster last night from andvanced auto for $98. If I just take the plastic cover of the under dash will I be able to get to everything ok or do I need to take out my instrument cluster also? My buddy has my book "somewhere in his garage" so any tricks would be greatly appreciated.
#9
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Re: Replace the power brake booster? (mogulmike)
When you all say hiss, is it occurring when you let off the brake pedal and its more like a sucking sound? My brakes seem to work fine but every so often I hear a hissing or sucking sound as I release the pedal. Wondering if I should order the parts now antisipating this to be the next item on the list.
#12
Race Director
Re: Replace the power brake booster? (vinnies87)
The cluster does not have to come out, only the composition hush panel. The trick is getting to the nuts which hold the booster. I found it much quicker to take the seat out to give me enough room. Extensions are a must as is a good light source. Not a hard job just a PITA.
#14
Racer
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Re: Replace the power brake booster? (93JetJocky)
My hiss is a sucking sound but only heard while the brake pedel is pushed so while sitting at a red light the sound is constant. If I push the pedal to the floor the noise goes away. I assume the hiss is a break in the vaccum and since I have to remove the "hush panel" is why it is only heard inside.
#15
Melting Slicks
Re: Replace the power brake booster? (Southern Comfort)
After donating some blood to the underdash area, I found an extension at Sears the is like a spring. Once I hooked that up, the underdash nuts were a 5 minute job. Pays to have the right tools!!
#16
Melting Slicks
Re: Replace the power brake booster? (vinnies87)
I went to AutoZone last night to order the BB and their suppliers are both out. I then went to O'Reilly and the price matched Autozone. Both have lifetime guarantees. If I can get someone to post pics after I get done, I will try to take pics while I do the job this weekend.