92 C4 brakes
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Instructor
Joined: Nov 2001
Posts: 196
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From: FORT LAUDERDALE FLORIDA
92 C4 brakes
Has anyone ever experenced brakes locking up at speed?
This weekend I was driving 80 mph and all four brakes engaged and slowed the car to a stop. after 30 min. the brakes released and the pedal went to the floor,I bleed the lines and now all I have is a brake light on the dash. As well as four shot rotors and cooked pads! What do you think?
This weekend I was driving 80 mph and all four brakes engaged and slowed the car to a stop. after 30 min. the brakes released and the pedal went to the floor,I bleed the lines and now all I have is a brake light on the dash. As well as four shot rotors and cooked pads! What do you think?
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From: Fort Knox, KY
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Re: 92 C4 brakes (DISGOFAST)
Damn, ASR module went mad? :crazy: :confused:
Last edited by onedef92; Jan 22, 2010 at 11:47 AM.
Thread Starter
Instructor
Joined: Nov 2001
Posts: 196
Likes: 5
From: FORT LAUDERDALE FLORIDA
Re: 92 C4 brakes (korvette4u)
The car only has 21,122 miles and spends a lot of time under cover,the dealer told me the brake lines are the best place to start. He told me the lines deteriorate and cause the fluid to boil over? I asked why the brakes released after 30min. and he told me the rotors expand from heat as they cool the brakes release.
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Drifting
Joined: Oct 2008
Posts: 1,936
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From: Rochester Hills Michigan
I had this happen on a '65. I found the compensating port in the master cylinder was plugged. The compensating port is a small hole ahead of the piston seal the allows expanding fluid to flow back into the reservoir. If it's plugged, the fluid heats up and applies the brakes. As the brakes heat up the fluid expands more, and you soon get full brakes. Let 'em cool about 30 minutes and drive away. I have silicone fluid and I think that may be more prone to expand.
I was very impressed that the disc brakes on the '65 would grind the car to a halt even with full throttle on the 396 in 1st gear!
I was very impressed that the disc brakes on the '65 would grind the car to a halt even with full throttle on the 396 in 1st gear!
Instructor
Joined: Nov 2006
Posts: 103
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From: Ft Liquordale Florida
This is my buddies car and it WAS the master cylinder (compensating port)...I didn't see this post until yesterday so I thought I would let everyone know what actually fixed it
