Sonata NF (2006-10) :: Brakes Grinding - Caliper Was Sticking
Apr 20, 2015
I have a 2007 Sonata V6 I bought used two years ago. When I bought it mechanic serviced the rear brakes as the caliper was sticking. Now the rear brakes make a grinding noise when I brake and when I drive the rear brakes make a sound like slight metal on metal contact. I know Sonatas are known for brake problems. Should I replace the rear pads, rotors, calipers (including pins) and if so what brands are decent to buy? I have used rock auto in the past.
My car has about 198,000km on it (123,000 miles).
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I took my 2010 Sonata GLS (86K miles) into the shop last Thursday for an alignment and new front brakes since the old ones were on the wear indicators and doing some squealing/squeaking on soft left turns. Got a call from the mechanic who said the rotors were also shot, so I had them replaced as well.
On my normal commute on Monday and Tuesday this week (approx 10 miles, 95% highway), I noticed that when the car was moving at 15mph or less in a straight line both front wheels were making a noticeable high-pitched squeal/squeak, which went away with increased speed and when braking. I figured it might be a break-in issue but when it hadn't improved by yesterday I made an appointment to have the car checked out by the mechanic again today.
Got the car back today and the same sound is still happening, though now it's in the 60mph range and seems to come and go regardless of wheel direction. The mechanic said he took the brakes apart, found no issues but cleaned and lubed everything as a precaution.
I'm starting to wonder if its the bearings that are shot, but the sound hasn't remained constant as I would expect with a bearing issue. All the parts used are under warranty, so the next step I have available here is to have the brakes and rotors replaced.
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I noticed yesterday a sound, like a grinding sound, *sometimes* as I apply the brakes to stop. I'm at 68k. The noise only happens when the brakes are applied so I suspect there is an issue with my brakes again.
Some BACKGROUND info: At around 60k (or 8 months ago roughly), the front pads were replaced after the brakes were squealing and a pulsating brake pedal when stopping. The pads were replaced by a dealer. In addition, both front/rear rotors were turned at the same time. Rear pads had 40% at the time and were not replaced.
Some weeks later the pulsation came back and I went back again and they machined them again. For this current issue I was thinking about taking the car to someplace local (not a dealer) and getting a free brake evaluation of what is going on.
I'm also concerned that all this machining the dealer did to eliminate the pulsation may have decreased the life of the rotors and perhaps they need replacement now.
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I heard a grinding noise from one of my rear wheels. After investigating, I saw that the OUTER pad was worn down all the way. I had only driven 15K and it had not been very long so I did not expect this. I also didn't hear the warning tabs as the they are on the inner pad and it had not worn down enough. I checked the caliper slide bolts and they were gliding freely. I checked under the boots and there was still grease in there.
My old pads had only been worn to 30%-50% so I installed those on for now. When I compressed the piston, I had a hard time getting it started and had to apply a bit of force with the C-clamp, but then it compressed without the need for much force. When I put the pads in, it was pretty hard to get them into the clips. the inner one required me to press pretty hard with my hand, the outer one was so tight, I had to use the c clamp to get it all the way up to the rotor.
I'm wondering what the cause may be. Are there some typical causes for why the outer pad may wear faster? I would think if the caliper bolts were stuck, that would do it, but they move freely? could it just be that the pad is too tight on the slider? How might I fix that? I tried filing them down a little but that obviously wasn't enough.
Also, now the pads on the right and left are uneven and the rotor on the right isnt smooth anymore. Should I go ahead and change out the pads and that rotor? Does uneven pads or a rough rotor affect the effectiveness of the brakes significantly? They are the rear brakes so I would think there is less of an impact. I know that uneven pads and a rough rotor will cause them to wear faster, but if I need to replace them anyways, I might as well wait til they wear down more.
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I heard a grinding noise coming from the right front tire last night. Came home, removed the wheel / tire and noticed the caliper was stuck pushing the pads against the rotor. I pushed the caliper pistons back in so they're not frozen, just sticking.
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So I just did my rear brake pads and rotors a few days ago. For the last few months, my e brake hadn't been working well (have to pull it way up, and still weak).
While doing the brakes, I noticed the park brake arm was more or less seized on the left rear. I worked it a bit, and then my park brake worked perfect - 4 or 5 clicks, right on.
Then I noticed it isn't disengaging (brake smoke). I figured the ratcheting mechanism in the piston must be kaput.
So today I got a new (reman) caliper & bracket, installed it, and... still sticking. Cables are fine, the arm is moving fine. I'm now certain that the problem must be hydraulic, but what?
I would think that a master cylinder or booster would cause all the brakes to drag, or at least one axle worth, but that isn't the case. After a short spin on the freeway with little brake use, 3 of the brakes show 40 - 45C or so, and the sticking one shows 150C. (with an infrared thermometer).
During the brake job I noticed the left side was harder to turn in than the right, so I guess that could have been hydraulic back pressure somehow. Didn't seem to notice any damage to the hoses, they look pretty mint. master cylinder still?
I did the rear bearings at the same time. The bearing on the left was bone dry, probably from overheating in the past - I'm sure this POS stuck at some other time too, overheated and lost its grease. right side was fine but I figured might as well do them both.
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Yesterday, I noticed that my right front brake caliper seemed to be sticking. This morning I jacked up the front end, and could barely turn the right front wheel when it was off the ground. So, I have concluded that that caliper is sticking. So, here is the question(s): what is the best way to repair this (new caliper, rebuilt caliper, or rebuild it myself), do I need to do both sides the same or can I just do the one that is acting up, and should I expect to pay. I have some mechanical ability, but that Haynes manual doesn't make too much sense to me. Getting it professionally repaired is extremely inconvenient, I need to be back at school (300 miles away) Tuesday evening, and probably couldn't get it in to get it done before then.
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One of the pistons in my driver side (UK) front brake caliper is sticking, so I've bought a second hand caliper just to fix the problem until I come to sell my pri in a month or so.
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2005 Toyota Solara my front driver side caliper was sticking and heating up a couple months ago... replaced the caliper and the rotor... still had the same problem. I would drive it, it got hot and stuck, after I parked for a little while it slowly released. Talked to a couple of mechanics and they both said undoubtedly I had a bad flex hose and it was collapsing with pressure and then will release... I changed the flex hose and flushed the fluid and it was immediately fixed...no problems.
Drove the car for a month, went to South Carolina and back and then a couple days ago the same thing started happening. Talked to a mechanic, he told me that the new caliper may have gotten fried from over heating before I changed the flex hose... Got a new caliper today (warranty) exchange... changed it out and still have the same problem. When it sticks I can release the pressure by opening the bleeder valve so it seems like the flex hose issue again... my only thought now is maybe the new flex hose is a bad one and someone mentioned the proportioning valve.
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I just hit a pothole on my way home just now and now my front right caliper is sticking. It happen about 10min from my house. As soon as i hit the pothole I can feel my truck pulling to the right and felt like there was some resistance when i was driving. I got home and peeked my head in the wheel-well and i can smell the brakes burning and smoking a little. How would hitting a pothole cause a caliper to stick. Is there anyway to unstick it or am i gonna have to change that caliper out...
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Have 50,000 mile on my 2011 F350 6.7 and up until today the truck has been flawless. This is my weekend vehicle and sees very light duty hauling fishing gear to my boat (100 miles hwy) and pulling my 7x12 enclose trailer with goose decoys. On a couple of occasions pulling my 29 CC from marina to my home and back. Took truck in for oil change and tire rotation, service advisor informs me I have 2mm on rear brakes and 3mm on fronts. Not sure why rears have more wear than fronts. Schedule to have brakes done for today and now find out that front right caliper is sticky and they want to replace both front calipers. I cannot believe that a 2011 SD F350 with 50,000 miles and of that mostly highway needs brakes let a lone calipers are going bad. Service manger tried to tell me that brake fluid should be replaced every 2 years, to which I responded that I have Ford perform all scheduled maintenance. He went on to say that this is not scheduled maintenance, wtf bs is he telling me, if it is necessary then it would be scheduled maintenance. Truck gave zero indication of stuck caliper, no sound and no excessive brake dust on wheel.
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2000 Ranger, see my sig.
Just had to swap out the pads on my truck yesterday. The pedal was pretty mushy and I was getting shaking in the steering wheel when the brakes got warm. Shaking wasn't all the time, only after they had been used quite a bit - say after city use and the brakes had to be applied suddenly. So I popped off the tires and swapped out the pads and replaced the brake fluid - flushed it.
On the driver side front, the pads barely had any real wear and the anti-rattle clip was all messed up. It was installed properly, but it looked like the pads had smashed into it. The rotor appeared to be warped, or at least out of round - but just barely. You could see it wobble slightly in one spot if you spun the hub with the caliper removed. The caliper itself was sticking slightly.
I didn't see any evidence of damage, the brakes flushed just fine although the fluid was incredibly dirty (because I haven't done it in a long while). On the passenger side front, the pads were worn down to the level I would have expected given the mileage. The wear was even.
My question ultimately is this - is the out of round hub the culprit here? Might there be something else going on like a caliper problem? Ultimately I plan on having the rotors surfaced - one of them certainly needs it and with new pads I might as well do it anyway.
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I know this has been talked about many times and how to solve the issue but thought I would ask some other questions too. Earlier in the summer, I did grease the slider pins as preventative maintenance. I don't drive my truck all that much and when I used it yesterday, (about 30 minute drive) I came home to burning brake smell. I'm wondering if enough heat would cause the caliper to go bad? Should I just grease the pins again or change out some parts?
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Two weeks ago did a road trip to NH from RI and i heard a slight dragging only at low speed (10-15mph) in my left rear tire. figured the caliber was dragging a little, it was. Before arriving in NH the brake light came on. Long story short i get back to RI and the left side noise gets worse and starts to lock up. I finally replace the rotor which was warped, pads, and caliper which was bad.
Was driving it same day and still here the same dragging and screeching noise and the brake light is still on. On my way home the left side locked up at low speed without hitting breaks and slid the truck, mid you all parts are new on that side. I am not sure what it could be at this point something in side the axle?
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I have a grinding noise coming from what I believe are the front brakes. It happens when I apply the brakes and sounds like the brake pad is worn out and there's metal-on-metal contact but when I checked the pads, they are at 80-90% (rears have about the same amount left). I hear it the loudest just before coming to a full stop, from about 20 mph down to stop. I thought it was caused by rust on the brakes but after I wore off the rust, the sound is still there.
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My rear brakes are grinding so I am preparing to replace all pads and rotors. Any special tools or procedures from when they did theirs? Do the rotors have retention screws? Do you have to use a special tool to push in the pistons?
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My read brakes have been grinding. I bought new pads to replace them. After pulling the drums I noticed that they were hardly worn. 50,000 miles on the car. They was a bunch of brakes dust in them. Cleaned the dust out and put the drums back on. It was quiet for about 3 weeks, now the grinding is back.
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Just put on eibachs and car is randomly making a grinding noise when slowly accelerating or braking.. Also noticing a fairly loud clicking noise when going in reverse. The noise isn't consistent and seems to happen more right after startup. I haven't gotten the alignment done yet and was wondering if this could be the problem. Will try and post a video soon.
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I just bought a 2006 Sonata LX V6 a few days ago and in almost every way it seems like a great car. My '08 GLS V6 which gave me 150k great miles got totaled in November, which really sucks, but I wanted to find another '06-'08 V6. I noticed when I started it for the test drive that the car made a bit of a grinding noise on start up. I didn't think much of it and figured that the warranty from the dealership would cover any problems.(I probably should've checked earlier, but the dealership's warranty only covers cam and lifter noise and engine failure) After I looked into the issue more, I found out that it is a fairly common problem on the early 3.3's with the timing chain tensioners. I'm pretty concerned based on just the nature of the repairs and the cost I've seen for them.
I'm the third owner so the 5 year/60k warranty is expired, but I know there is a TSB out for the issue. I can't find the TSB anywhere but I've heard to have it repaired the car has to make the noise on start, sit 10 minutes, and make the noise again. If it does, the oil needs to be changed and the test repeated again. Since I'm running Hyundai 5W-20 and an OEM filter already, I tried the test on my own. It made the noise on start, sat 10 minutes, and made it again. It is only for a couple seconds, but it's still concerning to me. I guess what I'm trying to ask is if what I've described is covered under the TSB. I really don't wanna have to worry about something like that right now, so my next question is whether the issue I have is detrimental to the motor. My worst fear would be to have the chain jump a cog on the cam gear and slam valves into pistons.
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I have a 2008 Hyundai Sonata GLS 2.4L with 131,000 miles on it. When I accelerate from a stop, there is a buzzing/rattling/grinding noise coming from the engine bay of my car. It's really hard to describe, there is a definite buzzing sound, but also almost like there is a bolt rattling around and banging into things. This only happens for a couple of seconds. It also seems to be worse when I'm accelerating up hill. If I accelerate slowly from a stop, the noise does not occur, and it also does not occur if I accelerate while I'm already moving.
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Need to determine the noise before I took the vehicle in to be serviced. I don't know if I would necessarily describe this as grinding...to me it doesn't sound like metal on metal..but it's not normal.
Only happens on a cold startup, and even then it hasn't been 100% of the time...probably 80% of the time though.
2007 Hyundai Sonata - Startup Noise - YouTube
I found this thread, Grinding Sound On Statup but not sure it's the same issue. This just started. Vehicle has 150K miles on it.
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