Brake Pedal Won't Release |
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Brake Pedal Won't Release |
sdthomas |
Aug 8 2018, 09:31 AM
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#1
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Member Group: Members Posts: 64 Joined: 14-June 11 From: Seattle Member No.: 13,193 Region Association: Pacific Northwest |
As I was driving home from work yesterday, I noticed my brake pedal seemed to get firmer and firmer. It got the point where just tapping it slightly would engage the brakes, as though there was no more travel in the pedal. When I got home I noticed all four wheels were very hot to the touch so the brakes had clearly not been fully releasing. I let it cool down and checked the pedal and it felt normal but now I'm worried about driving it.
What could cause this? |
dr914@autoatlanta.com |
Aug 8 2018, 09:52 AM
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#2
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914 Guru Group: Members Posts: 7,835 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
probably bad pedal cluster bushings causing the pedal to stick the brakes to get hot boiling the fluid
As I was driving home from work yesterday, I noticed my brake pedal seemed to get firmer and firmer. It got the point where just tapping it slightly would engage the brakes, as though there was no more travel in the pedal. When I got home I noticed all four wheels were very hot to the touch so the brakes had clearly not been fully releasing. I let it cool down and checked the pedal and it felt normal but now I'm worried about driving it. What could cause this? |
sdthomas |
Aug 9 2018, 06:11 PM
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#3
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Member Group: Members Posts: 64 Joined: 14-June 11 From: Seattle Member No.: 13,193 Region Association: Pacific Northwest |
OK I finally was able to check out the pedal cluster. It was rebuilt about 4 years ago the bushing still looked to be in good shape. No sign of any brake fluid. I drove it around the block and the pedal froze up again. I lifted the front end and could barely turn the wheels. It's as though the MC isn't releasing when pushed in. What's the next step?
Attached image(s) |
Spoke |
Aug 10 2018, 11:42 AM
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#4
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
It's as though the MC isn't releasing when pushed in. What's the next step? So after you drove it and the brake pedal froze up, did you check the free play in the pedal to eliminate it from suspicion? The pedal should be loose before it contacts the plunger on the MC. You can check the free play with your hands as it's more sensitive than pressing with your foot. Was the pedal loose with free play when the brakes were froze? |
sdthomas |
Aug 11 2018, 01:11 PM
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#5
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Member Group: Members Posts: 64 Joined: 14-June 11 From: Seattle Member No.: 13,193 Region Association: Pacific Northwest |
The free play goes away once you push on the pedal. I checked it this morning and there was a little play in pedal. But it went away after using the brakes.
I guess at this point I'm wondering if there's a quick fix, or is time to refurbish everything (MC, calipers, lines, rotors) which will put an end to the 'fun car' for the year (IMG:style_emoticons/default/sad.gif) So after you drove it and the brake pedal froze up, did you check the free play in the pedal to eliminate it from suspicion? The pedal should be loose before it contacts the plunger on the MC. You can check the free play with your hands as it's more sensitive than pressing with your foot. Was the pedal loose with free play when the brakes were froze? |
Spoke |
Aug 12 2018, 09:25 AM
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#6
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
The free play goes away once you push on the pedal. I checked it this morning and there was a little play in pedal. But it went away after using the brakes. When you say "free play", do you mean after the plunger in the MC is pushed or the free play in the pedal mechanism. The pedal mechanism is separate from the MC. Last year my brakes started sticking. I noticed the brake lights staying on. The problem was the pedal mechanism was binding. After applying some oil and penetrating fluid, the pedal mechanism loosened up and I've had no brake sticking issues since then. |
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