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I hit the brakes and the pedal went to the floor. Luckily, I was going up an exit ramp. I pumped the pedal several times and stopped OK. The brake light on the dash came on and stayed on. It's still on.
I checked the brake fluid and both reservoirs were full.
Do you think it is the master cylinder?
Could it be the proportional valve is stuck?
What else could it be?
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Send PMOak Creek, WI - USA
Joined: 5/21/2008
Posts: 2041
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Dave??? Where are you now?? I am at home!! You?
Dan
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22715
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
If both reservoirs are full, the problem pretty much has to be the master cyl. Either that, or your rotors are warped, and driving to/from the Gathering has pumped the system full of air.
I would suggest first trying to bleed the system, drive it a few miles, and see if that helps. If not, then the suggestion would be to replace the master....
I would suggest first trying to bleed the system, drive it a few miles, and see if that helps. If not, then the suggestion would be to replace the master....
Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Sorry, I should have mentioned that I am home safe and sound.
Would it go to the floor all of a sudden if one rotor was warped?
I haddened driven it since last fall, but the brakes were checked before I left and they were normal for about 1400 miles. Of course, most of that was interstate driving, with not much stopping.
They seemed normal until the pedal just went to the floor.
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Send PMLodi, WI - USA
Joined: 9/25/2007
Posts: 341
Vette(s): 1972 Targa Blue, T-Top, Saddle leather, 350 auto,numbers match, all original except '69 factory side exhaust.
Previously owned: 1969 427, 390hp, 4sp, Riverside Gold coupe, factory side exhaust
dwright said: I hit the brakes and the pedal went to the floor. Luckily, I was going up an exit ramp. I pumped the pedal several times and stopped OK. The brake light on the dash came on and stayed on. It's still on.
I checked the brake fluid and both reservoirs were full.
Do you think it is the master cylinder?
Could it be the proportional valve is stuck?
What else could it be?
OMG Dave, you drove from WI to NY with little or no brakes?? I'm glad you made it home safely.
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Oh man! That's makes for an interesting ride home doesn't it? 
That same thing happened to us one year going to Adam's "Corvette for a Cure" doings. The seal in the master cylinder must have rolled causing it to leak internally. Then after pumping the brakes a few times it was fine the whole trip. But I went ahead and replaced the master cylinder and booster.
Glad you made it home ok.
GEN III 5.7L "LS6" Engine swap
TKO500 5 spd.
3.54 Dana 44
'69 "N11" Sidepipes
Borgeson Steering Box
Born 8/1981
Sequence #3975
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Lifetime Member #26
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
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Fortunately, on interstate I didn't have to use the brakes too often. Just those darn toll booths.
I stopped twice to fill one tank and empty the other.
No close calls as the traffic was light and construction was minimum.
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Send PMBelvidere, IL - USA
Joined: 10/24/2004
Posts: 440
Vette(s): 1977 Black T-Top ZZ4 5Sp 16in Wheels
Glad you made it home. I lost mine on Friday, did lots of Nascar driving. Down shifting and what brakes I had. Hard to find a good MS, I had 3 in the last 5 years. Looked at all sites, just ordered from Zip Products a new MS. Try to stay away from remains, They don't last, junk.
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Send PMEquinunk, PA - USA
Joined: 10/31/2007
Posts: 2570
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
YUP! I feel your pain. NO RE-MANS for me. Junque. Brakes need "NEW" stuff. No chances taken.
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Send PMOak Creek, WI - USA
Joined: 5/21/2008
Posts: 2041
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Dave,
If you could have let me know about the brake problem I could have directed you to "Corvette Sports" They are located I Sheboygan Wisconsin!! You went by them on I-43!!
Dan da Man
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