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tjpreul | brakes won't fully release | ||
Elite Guru
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When hot the front brakes release slow. After using the brakes my car will have a shutter and out slowly goes away. I was checking to make sure everything was tight and realized my front wheels would not turn freely. After they cooled it was fine. Then I pressed the brakes again and it was back, but not as bad. I tried this again when fully cooled and no issue.
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Posted on: 2014/12/27 22:30
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Matatk | Re: brakes won't fully release | ||
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I would check the hoses first. The inside can collapse.
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Posted on: 2014/12/28 4:47
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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BrianCunningham | Re: brakes won't fully release | ||
Senior Guru
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check the caliper pin
I'd bleed it, may have something trapped in there when's the last time you changed the fluid? if all that fails, check the caliper pistons |
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Posted on: 2014/12/28 17:46
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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bogus | Re: brakes won't fully release | ||
Grand Imperial Pooh-Bah
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you don't mention miles... also, what pads?
If you use cheap pads, they can stick to rotors when hot. I agree with checking the pin and flushing out the fluid. It won't hurt... It sounds to me like the entire brake system needs a once over. |
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Posted on: 2014/12/28 21:15
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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tjpreul | Re: brakes won't fully release | ||
Elite Guru
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They are ceramic pads with about 4kon them. The fluid was flushed at this time too. Today after a bit of driving I released the pressure with the bleeder and the wheel spun free, so that rules out the caliper or pads sticking. I pumped them back up and released the hose from the line and the wheel spun free again. I did this several times at both locations. So I am leaning towards the master cylinder.
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Posted on: 2014/12/31 17:38
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Vegas wasn't built on winners. '92 auto, MSD, Banski, Taylor wires, SS lines, C5 rims, 3.07 gears, white gauges, seats from a '96. Motor: Forged rotating assy, Probe pistons, CC valvetrain, AFR heads, Procharger P1SC |
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bogus | Re: brakes won't fully release | ||
Grand Imperial Pooh-Bah
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sounds like a dying master cylinder...
order one from RockAuto... tons cheaper than anywhere else. |
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Posted on: 2014/12/31 19:18
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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BrianCunningham | Re: brakes won't fully release | ||
Senior Guru
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Could be the ABS
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Posted on: 2014/12/31 21:30
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_________________
Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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CorvetteBob | Re: brakes won't fully release | ||
Elite Guru
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I don't consider myself one of the smartguys around here, but it'd seem to me that it could either be the ABS, or my 1st thought the hoses. (These are questions as much as suggestions)If the master, wouldn't the pedal remain in a depressed position? Or would it refill from the reservoir and remain in the upwardmost position? If this were the case, is it possible the hoses are collapsing, allowing fluid to remain trapped and the master to be overfilled. Once the master would get overfilled and then pressed again, that could cause thes excess fluid in the master to be forced back past the piston, helping to cause a leakage/failure issue? If the ABS, would the system be energized and making some noise as if in operation?
Again, just questions as much as anything. |
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Posted on: 2015/1/3 18:42
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Beauty, it’s in the eye of the beer holder |
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Matatk | Re: brakes won't fully release | ||
Webmaster
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Are both front wheels sticking or one side? I guess I missed that in your original post.
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Posted on: 2015/1/3 22:48
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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teebee | Re: brakes won't fully release | ||
2014 Memorial Day Car Show Winner!
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Could be the pistons are sticking in the cylinders, I've had that happen on a pickup.
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Posted on: 2015/1/4 1:16
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2007 Atomic Orange 3LT coupe. Borla Exhaust One of Americas' proud Deplorable |
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CentralCoaster | Re: brakes won't fully release | ||
Senior Guru
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Booster pushrod adjustment. Not sure how it can go out of adjustment, but it sounds like what's happening, and the fluid heating up causes the brakes to drag.
Remove the reservoir cap and have someone jab the pedal, you should see some fluid geyser up. If not, the reservoir port is blocked due to the pushrod being too long. When you take the MC off, there's a little screw sticking out of the booster pushrod end that can be tightened in. You'll have to get a firm grip on the pushrod with some vicegrips, but protected with rubber or rags to avoid chewing up the shaft. |
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Posted on: 2015/1/4 21:39
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1985 Z51, ZF6 |
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tjpreul | Re: brakes won't fully release | ||
Elite Guru
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I have a new master cylinder to install. The old one is full of crud. On the new reservoir it doesn't have a prime hose connection. I've tried to clean the old one, but cannot get to all of it. I'm thinking of getting a brass fitting and attach it to the new reservoir.
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Posted on: 2015/2/21 23:29
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Vegas wasn't built on winners. '92 auto, MSD, Banski, Taylor wires, SS lines, C5 rims, 3.07 gears, white gauges, seats from a '96. Motor: Forged rotating assy, Probe pistons, CC valvetrain, AFR heads, Procharger P1SC |
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BrianCunningham | Re: brakes won't fully release | ||
Senior Guru
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all that separates the 2 circuits is an o-ring, which fails
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Posted on: 2015/2/23 0:06
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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Matatk | Re: brakes won't fully release | ||
Webmaster
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Quote:
I've heard of guys using rocks, pebbles, marbles, etc in various reservoirs and shaking them around with cleaner in them. Might that be possible? |
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Posted on: 2015/2/23 14:29
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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Schrade | Re: brakes won't fully release | ||
Elite Guru
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Lines collapsed? If so, bleeding is in vain...
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Posted on: 2015/4/24 12:53
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LT5, Marc Haibeck ECM module, AUTOMATIC!!! |
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