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Zanaan
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May 15, 2012, 6:42 AM
Post #1 of 12
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2001 hyunda accent 1.6
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At about 60000.miles currently, and on day 1 my brake lights were stuck on. Took it to kwik kar mechanic to get fixed, and he said the pedal wasn't hitting the switch properly to turn off the light, said he attached a metal bit to compensate. On way home I noticed brake pedal was building pressure, becoming more firm. About half way home callipers on front tires locked and brakes started smoking. Called mechanic and he had me take it to the nearest franchised mechanic from kwik kar. There the new mechanic said it was unrelated problem, that calliper on front passenger had gone bad. Replaced with refurbished from Hyundai dealer, made it about 2 miles and it seized again. This time he had me get a new hose, 2 miles again, same issue. Tried replacing calliper once more as it may have been faulty, same issue. Took to brake check and they said most likely master cylinder, replaced and problem has improved, but pressure is still getting built up, just over longer period of time. However weather temperature is also about 15 degrees cooler, which may factor in.
At wits end, please help.
(This post was edited by Zanaan on May 15, 2012, 6:44 AM)
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Hammer Time
Ultimate Carjunky
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May 15, 2012, 7:01 AM
Post #2 of 12
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Re: 2001 hyunda accent 1.6
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Something is preventing the brake pedal from completely returning to full release position and it's causing the system to "pump up". The push rod may be out of adjustment or something else may be preventing it from completely releasing. You can prove this theory by waiting ntil the next time it locks up and loosen the master cylinder and pull it away about 1/4". If that releases the brakes, theory proven.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
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May 15, 2012, 7:34 AM
Post #3 of 12
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Re: 2001 hyundai accent 1.6
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Right w HT. Brake pedal can't return to allow brake fluid back to master cylinder. Whatever the first tech did adding something to make brake lights work is where the problem likely is. Adding something metal there to make brake lights work?
I haven't had the fun of replacing a brake light switch (usually fairly cheap and easy) on a Hyundai but there must be some adjustment or the switch just is messed up? Since this happened right after that - that's the almost certain problem now if there's no damage to the brakes themselves now added to this mess. There has to be some freeplay in the brake pedal or it will behave like you are "riding" the brake and fluid just from heat of engine on lines will make pressure. Should be all wheels really and can't explain why it seems to have picked one? Probably just missed the call on that by you or second tech.
Really just once this happened with a routine master cylinder replacement to me but wouldn't do it cold so tricky to find until I drove the car over 5 miles and wham it happened. Different deal as that was defective master cyl not made properly.
Again I say fix whatever was done to the brake light switch and check all the brakes. Damn - stuff happens out there,
T
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Hammer Time
Ultimate Carjunky
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May 15, 2012, 7:36 AM
Post #4 of 12
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Re: 2001 hyundai accent 1.6
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I was thinking that the incomplete pedal return may have been the whole issue all along.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
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May 15, 2012, 7:46 AM
Post #5 of 12
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Re: 2001 hyundai accent 1.6
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That has to be it. Said - happened to a car of course had to be a sister in law and pedal from easy to diagnose master cyl was remarkably firm when fixed and my usual 1 mile test drive showed all was well. Problem different than this. The centering bored part of master wasn't deep enough. Whole line had same problem all made at same plant as it turned out.
Lucky - that one didn't ruin the brakes. I drove it back to my shop only using parking brake and just heat expanding fluid in lines cause brakes to apply themselves! That car almost couldn't be driven the brakes were applied so hard when you got a few more miles on it!
Different problem as this thread had something done to that brake light switch which I'm near sure is the source problem,
T
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Hammer Time
Ultimate Carjunky
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May 15, 2012, 8:01 AM
Post #6 of 12
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Re: 2001 hyundai accent 1.6
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The original problem was the brakes lights staying on all the time and I believe he wrongly assumed it was a switch problem when in reality the whole pedal wasn't returning.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Zanaan
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May 15, 2012, 8:06 AM
Post #7 of 12
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Re: 2001 hyundai accent 1.6
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Possibly, he had touched the switch contact with a sort of metal pronged pen and it turned off. He said the pedal wasn't hitting the switch, that something fell off, but I hadn't seen anywhere anything could fall off. He apparently fixed it by adding metal bit.
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Zanaan
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May 15, 2012, 9:20 AM
Post #9 of 12
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Re: 2001 hyundai accent 1.6
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Just took a look at what he did, apparently attached a washer and quarter inch thick nut to the end of the contact meant to hit the brake switch.
Would this be the cause, or was the brake pedal already a problem?
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Hammer Time
Ultimate Carjunky
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May 15, 2012, 9:31 AM
Post #10 of 12
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Re: 2001 hyundai accent 1.6
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It's definitely not supposed to be that thick. I have been known to use a penny sometimes but what works the best is a plastic push pin with a flat head. You could always just go to the dealer and get the original rubber bumper that it came with.
The switch itself may need to be adjusted after the repair.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on May 15, 2012, 9:32 AM)
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Tom Greenleaf
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May 15, 2012, 12:57 PM
Post #11 of 12
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Re: 2001 hyundai accent 1.6
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Quote ">>Would this be the cause, or was the brake pedal already a problem?<<"
If you can lift the brake pedal further up then where it sits that's a problem. I wish I knew the exact configuration but something happened as posted in first post at the time this trick was pulled as apparently the only problem was brake lights stayed on. That's a switch or pedal not returning to top and hard to envision what this trick with a washer and nut was all about.
If somehow it didn't line up and for some reason pedal was bent to strike switch or something unknown to me so far there was a problem lurking but it wasn't brakes dragging was it?
RIP Dad but he was a two footer with auto trans cars always dragging the brakes but with his foot not just in wait but actually dragging the brakes some - argh. When brakes get hot enough they don't stop well or boil brake fluid in extremes such that you get nothing!
Wish I could look at one without a problem and compare to what yours looks like now.
All master cylinders I've dealt with are well sprung to be off and if this brake pedal can't or won't move to full OFF that's a problem. Guess is not anything to adjust now on most but rather replace broken or worn out stuff which is very rare to me even cars with very high miles. An accident in its history could change everything as then who knows what could have been damaged, broken or missing that should be failsafe by almost any car.
I'm a bit surprised that a Hyundai dealer tech didn't have more info available or check this out more with the complaint you had. Any decent tech should take a brake problem VERY seriosly like this one or other. Going is optional, stopping is mandatory!
T
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Zanaan
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May 22, 2012, 7:37 AM
Post #12 of 12
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Re: 2001 hyunda accent 1.6
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Slight update on this. When driving I was able to force brake up slightly to relief e pressure but the nut stoped it normally doing so by about a millimeter. Now however when I brake there is a sort of deflating noise and brake pedal seems to lack pressure, going nearly to floor.
At first this was just when car was cooler, such as morning drive, but now continues during the hotter weather. Brakecheck claims this is likely the power booster, but was wondering if that sounded right to y'all, or if they nicked something up when replacing cylinder. Note the brakes no longer lock up.
(This post was edited by Zanaan on May 22, 2012, 7:39 AM)
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