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08-22-2007, 10:03 AM | #1 | |
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brake problem
My car is a 94 prelude and my problem is brake. I just noticed whenever I step on my brake pedal, it will stowly go down all the way to the floor. it only happens when my engine is running and it doesnt do that when its not running. My car has ABS brake but it doent show any trouble code. Any expert out there can tell me why?? Thanks for any help.
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09-07-2007, 02:10 AM | #2 | |
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Re: brake problem
u have to bleed ur brakes u have air in the lines or possibly a hydraulic leak from the rear wheel cylinders or the master cylinder sometimes the leaks cannot be detected so goodluck
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09-12-2007, 03:41 PM | #3 | ||
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Re: brake problem
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09-25-2007, 09:07 AM | #4 | ||
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Re: brake problem
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09-25-2007, 04:36 PM | #5 | |
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Re: brake problem
yea the only problem it could be is a leaky wheel cylander or maybe air in the lines but most likely it is leaking fluid check the brake fluid level and if its low or empty fill it and watch it and if it goes down within a short amount of time its leaking break fluid and when a car is off the break system does not ever work properly in any car if you pump the brake while its off it will go hard.
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09-28-2007, 01:58 PM | #6 | ||
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Re: brake problem
Quote:
check rear wheel cylinders and if not master cylinder is bad take a uv light and check under the master cylinder and if you see residue then theres your prob. because i had aal the same symptoms you guys had so i went crazy trying to fix it finally i fixed it by changing master cylinder.. also the brakes work on engine vacuum so with the car off its gna feel hard but as soon as engine is on then the brake booster works and makes braking alot easier but what happens is if theres a hole in the system when you push the brakes the pressure is gna drop and the pressure will not be returned hence the soft pedal |
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05-04-2008, 08:53 AM | #7 | ||
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Re: brake problem
I have the same problem with my lude. and probably there are 57,000 people around the world who drives prelude have the same problem. I already replaced my master cylinder and replaced my brake fluid from all the wheels. I dont see any leak and my brake cylinder is always on full level. But my brake pedal still slowly go down to the floor. what else do I need to check thats causing this problem?
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05-04-2008, 04:37 PM | #8 | |
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Re: brake problem
soft pedal means that the hydraulic system has a air leak or pressure leak main spot master cylinder and so you know that it wont be soft with the car off because it uses the brake booster and the brake booster is powered by engine vacuum and one more thing im not trying to step on anyones toes but the major no no is reviving dead threads they are defined as more than three months old anyways you also have the rear wheel cylinders which are located in the brake drum also did you open a brake line like take a brake hose off or run really low on fluid because you mentioned that you changed your master did you remember to bleed the whole brake system including the master
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07-20-2008, 03:16 PM | #9 | ||
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Re: brake problem
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07-20-2008, 09:47 PM | #10 | |
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Re: brake problem
It's a common problem. Just get a friend and bleed your brake system.
__________________
1994 Honda Prelude Si H23A1 Me: Get new U-Joints, then your Ford won't suck as bad. Him: Do I need o-rings? Me: No you idiot. Him: Sorry, I've never replaced an O-Joint before Me: FAIL |
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04-18-2016, 06:00 PM | #11 | |
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Re: brake problem
I have a 94 prelude type s that the brakes are locking up after being driven a few miles and the pedal gets rock hard need help to figure this out
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04-19-2016, 02:46 PM | #12 | |
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Re: brake problem
My pedal never gets soft until I bleed the front again. The mechanic that I took it to said that the brake fluid is contaminated and has blown out the seals in the calipers and the master cylinder. Can this be true?
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