2007 Sonata - feels like lumpy tires
#1
04-08-2019, 07:38 PM
2007 Sonata - feels like lumpy tires
Firstly, please forgive me if I am novice. I didn’t drive until I was in my mid 30s and this is my first car.
It is a 2007 Hyundai Sonata GLS. I purchased it used about three, maybe four years ago from a garage, probably with too many miles. But at that time, there wasn’t a rust spot on it, it was a super smooth ride, with a lot of get up and go, and great stopping power. Not to mention fuel efficiency (which it, for the most part, still has.)
I don’t drive it everyday (probably 2-3x a week) but I have cared for it the best I can. I purchased new tires, and every spring and fall snow and all seasons are swapped and tires rotated. All except one time, the oil gets changed regularly if not before it is due. I brought it in to the actual Hyundai dealership for two recalls - brake light and control arm, to which I believe they repaired brake light ?switch? and did a kind of corrosion preventative spray on the underside of the car.
The problem is that about a year to year and a half into owning this car, it developed a shimmy or wobble like I have lumps on my tires – like when one gets a lump of snow stuck on a tire. The slower I go, the slower the wobble. I am scared to drive it on the highway. Like I said, I bought not only new all season, but also snow tires. I had them balanced and aligned. I have brought it to three mechanics and the Hyundai dealership. They all said they couldn’t feel it, but eventually it effects my brakes so it doesn’t brake smoothly, more like b-b-b–b—b----b----b until it stops.
Few of my passengers have said they could feel it a little.
The tires don’t have any strange wear pattern, cupping or bulging, however I don’t drive much (and this is reinforced by this wobble). My father did a naked-eye runout test on all four wheels and found nothing. He also did other test that involves trying to yolk the wheels/tires back and forth by hand and he found nothing.
But its starting to effect my brakes again. B-b-b–b—b----b-----b til it stops.
Is there anything I should be grilling my mechanic about? Ask dear ol’dad to look into? Perhaps with some advisement and luck, I could look into?
Full list repairs, may or may not be pertinent -
Ties, tire balance, wheel adjustment, license plate illuminator light, brakes (2x), brake line, (brakes just aren’t the same anymore), feul line, new battery, interior fuse box. Missed one oil change, got dummy light, changed oil, light went away
It is a 2007 Hyundai Sonata GLS. I purchased it used about three, maybe four years ago from a garage, probably with too many miles. But at that time, there wasn’t a rust spot on it, it was a super smooth ride, with a lot of get up and go, and great stopping power. Not to mention fuel efficiency (which it, for the most part, still has.)
I don’t drive it everyday (probably 2-3x a week) but I have cared for it the best I can. I purchased new tires, and every spring and fall snow and all seasons are swapped and tires rotated. All except one time, the oil gets changed regularly if not before it is due. I brought it in to the actual Hyundai dealership for two recalls - brake light and control arm, to which I believe they repaired brake light ?switch? and did a kind of corrosion preventative spray on the underside of the car.
The problem is that about a year to year and a half into owning this car, it developed a shimmy or wobble like I have lumps on my tires – like when one gets a lump of snow stuck on a tire. The slower I go, the slower the wobble. I am scared to drive it on the highway. Like I said, I bought not only new all season, but also snow tires. I had them balanced and aligned. I have brought it to three mechanics and the Hyundai dealership. They all said they couldn’t feel it, but eventually it effects my brakes so it doesn’t brake smoothly, more like b-b-b–b—b----b----b until it stops.
Few of my passengers have said they could feel it a little.
The tires don’t have any strange wear pattern, cupping or bulging, however I don’t drive much (and this is reinforced by this wobble). My father did a naked-eye runout test on all four wheels and found nothing. He also did other test that involves trying to yolk the wheels/tires back and forth by hand and he found nothing.
But its starting to effect my brakes again. B-b-b–b—b----b-----b til it stops.
Is there anything I should be grilling my mechanic about? Ask dear ol’dad to look into? Perhaps with some advisement and luck, I could look into?
Full list repairs, may or may not be pertinent -
Ties, tire balance, wheel adjustment, license plate illuminator light, brakes (2x), brake line, (brakes just aren’t the same anymore), feul line, new battery, interior fuse box. Missed one oil change, got dummy light, changed oil, light went away
#2
04-09-2019, 07:57 AM
This must be related to the wheel assembly. Good job suspecting the tires. If I read it right it does not matter which tire is on which wheel. It feels all the same to you. That excludes the tires and rims.
Next thing to look at are the brakes. This one gives me pause:
This car has ABS and possibly ESC (electronic stability control). If any air got into the ABS pump then it won't work as designed. It may activate when it shouldn't. Activation also causes a sound and it could feel like a wheel wobble.
Here is what I would do: Ask the shop to completely replace the brake fluid. That requires a scan tool with ABS bleed program. Insist on them using the proper scan tool.
In addition they could measure rotor run-out with a micrometer. At least they should do a visual inspection of the brake system.
Maybe someone else chimes in here.
Please keep us updated.
Next thing to look at are the brakes. This one gives me pause:
brake line, (brakes just aren’t the same anymore)
Here is what I would do: Ask the shop to completely replace the brake fluid. That requires a scan tool with ABS bleed program. Insist on them using the proper scan tool.
In addition they could measure rotor run-out with a micrometer. At least they should do a visual inspection of the brake system.
Maybe someone else chimes in here.
Please keep us updated.
#3
04-09-2019, 02:43 PM
For what it is worth,
I would suspect in the process of changing tires there is a good possibility one of the wheel speed sensors may have been moved/damaged.
One way to confirm if the ABS (anti lock brake system) is involved would be to remove the fuse for the ABS .That takes the system off line. When the ABS loses a signal from one of the wheel speed sensors it thinks that wheel has locked up and proceeds to do it's job of releasing the brake pressure to that wheel so it can continue to turn again. It gives the sensation as described.
I believe "allegretto" offered some great advice which is to have someone check the system with a scan tool. That tool should provide the info as to which wheel is involved and inspection/repairs can be made accordingly. Once that is corrected your vehicle should perform as it did before.
I would suspect in the process of changing tires there is a good possibility one of the wheel speed sensors may have been moved/damaged.
One way to confirm if the ABS (anti lock brake system) is involved would be to remove the fuse for the ABS .That takes the system off line. When the ABS loses a signal from one of the wheel speed sensors it thinks that wheel has locked up and proceeds to do it's job of releasing the brake pressure to that wheel so it can continue to turn again. It gives the sensation as described.
I believe "allegretto" offered some great advice which is to have someone check the system with a scan tool. That tool should provide the info as to which wheel is involved and inspection/repairs can be made accordingly. Once that is corrected your vehicle should perform as it did before.
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