I would recommend that you get it to a shop as soon as possible. Why wait for a response from a forum?

 

Originally posted by niel@Apr 16 2007, 07:49 AM
Something wrong? Brake booster failed? Brake pedal too low? I don't know much about cars, just pure guessing. Need some help before sending my car back to workshop.

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Yes, something is wrong. You should take it in for service.

The 06-07 Sonata have excellent brakes. They have plenty of stopping power, and are easy to modulate. The Sonata beat Camry and Accord in braking tests.

How many miles do you have on your car? Even an 06 is pretty new to need the rotors ground. Did you warp the rotors with repeated high-speed stops?

 

The workshops here is not competent enough to detect the brake problem. Even skimming was my own recommendation to them based on the reading in this forum.

I reckon I will be closer to a solution if I pointed to them what is at fault. Anyway, going to send my car to the workshop again tomorrow and see how it goes.

18,000 miles now... warping problem is probably due to repeated car wash after driving the car. I was told most NF here have rotor warping problem, don't know how true.

My NF was completely from Korea, year of manufacture 2005. Surprise that no klunking problem or gas sloshing sound as reported by others here.

 

Originally posted by niel@Apr 16 2007, 08:51 AM
18,000 miles now... warping problem is probably due to repeated car wash after driving the car. I was told most NF here have rotor warping problem, don't know how true.

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I haven't heard of any widespread rotor warpage problem on the 06-07 Sonata.

I caught my wife trying her best to warp the rotors on our Sonata . She had the cruise set to 75mph, and hauled it to a stop. I told her that was an emergency stop, and from now on, tap the cruise button and coast down to 35-40mph before hitting the brakes. I think I have her convinced, but bad habits can be hard to break. I will keep a close watch on her.

 

Originally posted by niel@Apr 16 2007, 09:51 AM
My NF was completely from Korea, year of manufacture 2005. Surprise that no klunking problem or gas sloshing sound as reported by others here.

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When you take your car to the dealer, they might have to bleed the brake fluid or they are going to have to do something else. Take the car to the dealer ASAP.


My vehicle was built in alabama, usa.
It has the k-thunk.
The engine and tranny were imported from Korea for my 2.4L I4 manual shift.

I would like to know if anyone here has a sonata built in Korea that has no k-thunk and sloshing.

 

The workshops here is not competent enough to detect the brake problem. Even skimming was my own recommendation to them based on the reading in this forum.

That's a tough one. I feel your pain. I just figured if was a brake problem don't wait long. Sometimes I wonder how competent some of our shops are. I tell my dealer about a problem, he tells me it's normal. After my last oil change I discovered they left 3 of the 6 engine shroud mounting bolts off.
Good luck with your brakes :beer:

 

If the brake pedal is not "soft" it is probably a case of the rotors/pads being glazed. I would do a complete brake fluid flush with a good DOT4 fluid like ATE TYP200 or Super Blue. Replace all the pads with good quality ones (I don't like Ceramics as they hold more heat and do not have the Friction coefficient) make sure ALL the contact points where pads sit are cleaned/wire brushed and well lubed. If the brakes are not vibrating the rotors probably don't need to be cut but DO NEED to have the glaze removed. You can use some aluminum oxide sand paper and do both sides. Cutting will remove metal and could lead to more brake overheating/glazing/warping.

BE VERY CAREFUL and alweays allow the rotors to cool before washing.

check out all the question/answers here http://www.raceshopper.com/tech.shtml and go with their recommendation if you order pads. All the cars I put the Hawk HPS pads got improved braking feel when I installed them. Low dust and you can feel the extra bite they have when you step on the brake (even my wife commented on the improvement!!). My pedal was not "soft" but did feel better after a full brake fluid flush on both cars (and I do it every 2 years). I use the ATE as listed above as it's real easy to tell when flushed as the "other" color comes through since I alternate every time.

 

my brakes are not very good either.

 

If you compare (and get used) to the Accord's braking, than naturaly you'd find the Sonata's "soft" and "low"... The Accord's brake pedal is much more responsive. One of the typical complaints of latest Accord generation owners -- is that just TOUCHING the pedal brings the car to brake hard.

I've noticed it too on my Wife's Accord.

But, as others were suggesting, you must check it out, don't neglect it.

 

Originally posted by mamamia@Apr 16 2007, 12:15 PM
One of the typical complaints of latest Accord generation owners -- is that just TOUCHING the pedal brings the car to brake hard.

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I dislike over-boosted brakes like the old land yhacts of the 70's an 80's. I really like the Sonata's brake feel. It's not too hard, not too soft, very easy to modulate, don't fade after hard braking. My guess it that anyone that dislikes their Sonata's brakes probably has a mechanical problem.

 

It's not bad on the Accord, you just need to get used to it...

 

Originally posted by niel@Apr 16 2007, 05:49 AM
I have read praises about NF's brake, but mine is quite bad. Before skimming the fronts, I have problem braking down to a complete stop and it pulled further about 50 inch or so. After skimming the rotors, things got better but still it does not bite. I have to apply quite an amount of pressure on the brake pedal to stop completely. It is only a normal braking, most of the time during 'stop-and-go' traffic.

I have driven many cars in the past, including Hyundai Getz which the brake bites so well. On the Accord, it bites even better until the extent you will feel the four brakes hit the disc rotor, all with a light tap on the brake. While on the NF, I have to almost 'floor' the brake pedal to get this type of braking.

Something wrong? Brake booster failed? Brake pedal too low? I don't know much about cars, just pure guessing. Need some help before sending my car back to workshop.

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Niel,

Are all NF Sonatas made for Malaysia equipped with ABS, EBD, & TCS. We know this is not the case worldwide?.

I have no problems with the Sonata Braking system, although I am yet to engage the ABS. Hope I never need to!

 

Originally posted by MiamiLX@Apr 17 2007, 05:14 AM
Niel,

Are all NF Sonatas made for Malaysia equipped with ABS, EBD, & TCS. We know this is not the case worldwide?.

I have no problems with the Sonata Braking system, although I am yet to engage the ABS. Hope I never need to!

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Not all, but my i4 2.4L comes with ABS, EBD, TCS etc. I am going to send in the car today, will post up the result

The brake on the Accord is over-responsive, but the brake on my NF is surely problematic as I don't think a car requires that amount of force on the pedal in order to come to a complete still.

 

We sold a car that had a problem that sounds just like this. Our service dept. had just put brakes on it and needed to bleed some air out of the lines. Fixed it. If they replaced the pads for you air could be the problem.

 

... and if they didn't replace the pads tell them to check for glazing. :thumbsup:

 

I caught my wife trying her best to warp the rotors on our Sonata . She had the cruise set to 75mph, and hauled it to a stop. I told her that was an emergency stop, and from now on, tap the cruise button and coast down to 35-40mph before hitting the brakes.

This is funny.
and, she's right. It really doesn't matter.
Do you really think that cruise control will give more gas while you're trying to stop?

 

Originally posted by error666@Apr 17 2007, 08:42 AM
This is funny.
and, she's right. It really doesn't matter.
Do you really think that cruise control will give more gas while you're trying to stop?

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I was talking about the brakes, not mileage. Instead of coasting down to 35-40mph, she simply sat on the brakes at 75mph. I could just imagine the rotors getting red hot and warping.

 

OOppss..My wife does it too... She drives fast till she needs to stop...


Are women all alike. :whistling:

 

Originally posted by mamamia@Apr 17 2007, 09:42 AM
OOppss..My wife does it too... She drives fast till she needs to stop...
Are women all alike. :whistling:

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You are talking about her DRIVING a car, and not an inuendo, right???? :thumbsup:

 

Both.

Are your women the same?

 

Got a more experience guy to fix my problem. He bleed my brake fluid and clean all the pads. I notice a layer of thick dirt on the pads which he has to brush off hard, normal?

Brakes are better now...

 

I was wondering what the outcome of your service visit was. Glad things were fixed to your satisfaction. Brake dust (and crud from running over people :banana: ) can cause a mechanic to scrape your pads. I have the feeling he did this to make you/him feel better. I've never heard of anyone scrapping pads unless it is to remove glazing like hatter mentioned. It's never been mentioned to me during brake service. Then again, I've only had pads replaced/rotors turned in past brake jobs. Never had to scrape people off my pads. :whistling:

Am happy things are going (stopping) good for you now. :thumbsup: