Sonata I45 (LF 2015+) :: Exhaust Noise At Idle While Braking
Jan 4, 2017
I have a 2012 Hyundai Sonata SE 2.0 Turbo. I just noticed last night that when I'm idle at a drive through or just starting off, going maybe 5 mph if that, that there is what I think is an exhaust noise coming from outside the car. I don't notice this sound anytime else except when at idle maybe pressing on the brake letting the car coast through a drive through or when parking. Far from a mechanic here. I just joined to maybe find out if I should schedule service immediately for something like this or wait.
I'm worried I might have torn something on the bottom of the car because I have taken it down a normally dirt road that was covered in snow and ice and bottomed out several times. I only idled down that road, going slow enough that the speedometer didn't even register. That was at least 2 weeks ago. Last night however, I went up a small hill in a parking lot, just at idle speed and heard a scrape, so bottomed out again. Didn't hear anything until about 1 hour after I got home when I went outside to move my car for the plow guy.
It's strange because today I didn't hear it when I started up the car, but only heard it when I went through the Dunkin Donuts drive through. I had my foot on the brake and the engine idling and it sounded like exhaust or the mufflers or something. Could it be that maybe water and snow got in something on the underneath of my car, and the exhaust is trying to "spit" it out?.
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Noticed that the A/C blows harder when you are braking? Is this normal or should I take it in? I have a 2016 Sonata Sport.
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I've been noticing that when I need to make a hard stop, I will feel a sudden engine vibration for about 1 second as soon as it comes to a complete stop. The same feeling you might get when the RPM drops too low. It only does it for like 1 second though. I am not sure if it is the gears shifting down that is causing this. I won't feel it if I am making a gradual slow stop. Only fast sudden stops.
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Looks like the front parking assist and auto emergency braking are inoperative. I have them selected in the settings but get no beeps or warnings. The back sensors are working and I get a display warning and tone. 2016 Sonata Limited ....
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Today morning I just noticed that while I was warming up my 2015 sonata 2.0T limited, I found there is uneven exhaust flow. Driver side exhaust has more flow than passenger side exhaust. I could feel flow barely from passenger side exhaust. I am just wondering if it is normal or I should take my car to service.
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Noticed the condensation from the exhaust seems to only exit on the left muffler when the vehicle is idling?
Is there an actuator that turns the right side unit on under heavier acceleration?
BMW uses an actuator on their exhaust system that opens up to create more airflow when above a certain RPM.
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Well I've just noticed something quite annoying today... a very slight hissing sound coming from under the rear end of the car. A friend I drove to work this morning even said "what's that noise?".... It reminds me of the sound you'll hear when there is a pinhole in a joint weld, or a clamp is loose? My car only has 2800km on it!
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About 4 weeks ago my 2015 sports turbo developed loud exhaust, deep rumble, dealer replaced left rear muffler. Noise still there. I'm suspecting the center muffler.
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2015 6.7 KR... when idling for long periods of time the cab starts to smell like exhaust. I've also noticed when standing outside the truck with it idling (not in regen), it freaking stinks, bad! My 2003 never had this problem and idled for days (literally). Possibly leaky gasket here or just the nature of the 6.7?
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I bought 2015 Sonata SE, it was produced in April of 2015. It drives nice and overall its OK but it has an excessive vibration that gives me a headache. When stopped at light/traffic with AC on it feels as if I was sitting in a vibrating massage chair. The steering wheel and seat vibrates. When I shut off AC it vibrates less but still seems to be vibrating too much. I know that 4 cylinder will vibrate some but I did not expect getting a massage while sitting in the car. It does not vibrate while driving, just in idle.
I am so unhappy with it that I am ready to trade cars with my DH who drives 10 year old Accord with manual transmission that vibrates less than my brand new car. What do I do? I will be taking it to the dealer but would like to go prepared and educated. I did see some posts about ECU and TSU updates (whatever that means) but it seems that it applied to cars manufactured in 2014?
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I noticed recently that my car started this popping noise when braking in reverse gear. I never ran over anything and babied it for all the 6000 miles it has on the ODO. 2015 Camry
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My new 2015 Sonata 2.0Twith 8000 miles started running oddly about 2 weeks ago. Rough idle with engine "sputtering". Erratic acceleration -- merging into traffic on highway and car not going over 40mph, even with gas pedal all the way to the floor. On deceleration, clunky down-shifting. Very hard to drive. Dealership first came back with diagnosis of "buildup on throttle plate" (Note - I use only high-quality gas AND only have 8000 miles on car, 3500 or that being one long highway road trip). Then, after 3 days of diagnosis, they say I need 2 new fuel injectors I am baffled how a new car can have either buildup or failed fuel injectors...
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I purchased a 2011 Sonata Limited Edition TODAY. It was a lucky find as the car has less than 30k miles. As I was driving home (back roads and interstate), I heard a clicking noise every time I hit the brakes. I do not hear this noise when I back up and brake, only when the car is in drive and I am braking.
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I have an '08 GLS and I've been hearing a "pop" noise coming from the rear passenger wheel well when I am braking. It only happens once per braking episode and usually if I am applying medium brake pressure, i.e. slowing from >25 mph. What this might be and is it normal?
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My car is making metal grinding noise when coming to a slow stop when you are stuck on traffic or going into your driveway. You can hear the sound and feel the sound.
I had this issue a year go and i took it to the dealer and they told me that i need to replace my rotors and my front brake pads.
A year later the noise came back and they told me that i need to replace my pads. I replaced my front break pads and a month later the noise is back. I went back and checked my pads and the pads were still new.
I only hear the sound when braking after driving in a heavy traffic or on a stop and go traffic. I don't hear the sound when i start to drive or driving in a non traffic condition.
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I have a 2010 Hyundai Sonata with 88,400 miles and I am hearing a knocking noise in my rear right wheel whenever I apply light to medium pressure to my brakes (I don't hear anything when I brake hard). It started a year ago and I heard it throughout the summer. But in the winter, I didn't hear anything. Now that it's getting warmer again, the noise is starting to come back. I've taken it to my mechanic numerous times and he doesn't know what it is. I had my brake pads and rotors replaced just before the noise started a year ago. Here is a video of what the noise sounds like (this isn't me, but the same scenario
[URL]
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There is a recurring moan that comes from the engine compartment around 40% of the time while the vehicle is idling. Sometime it's a moaning sound and other times it's more of a grunting noise, almost sounds like the engine is reving, only the RPM guage doesn't move.
Doesn't matter if the engine is hot or cold. Car has just over 2,000 miles.
Dealer, naturally, could not reproduce the noise.
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I discovered a few weeks ago that my 2009 Sonata 2.4L SE had a sticking caliper on the rear driver's side. It had gone bad on the passenger side as well, but not as bad. I had the calipers, rotors, and pads replaced on the rear yesterday. As soon as that was done, I started hearing a noise when braking that sounded like a rubbing noise, almost like a long "sigh." It happened at any speed as long as I pressed the pedal far enough to bring the vehicle almost to a complete stop.
I originally thought the calipers weren't the right fit, but the parts I confirmed the parts I ordered (Nastra) through Rock Auto were correct. I've driven about 80 miles since then and nothing has changed. I didn't see anything wrong when I took the tire off, but I don't think this sound is normal. Taking it in to the mechanic tomorrow. Could it be a wheel bearing? Wrong parts?
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2016 LTD 7200 miles. Been to the dealer twice for routine service (oil change both times, tire rotation and air filter change as well second time. First and last time they are changing air filters; what a freakin rip off)
So this noise occurs at very low speed (1st or second gear) and very consistently occurs when lightly pressing the throttle and usually occurs when releasing as well. It sounds like a clock tick and in fact sounds very similar to the shift interlock solenoid sound you get when tapping the brake while in park.
Furthermore it doesn't happen from a cold start. Car has to be driven a bit and brought up to normal operating temperature; for example I can't reproduce the noise at all first thing in the morning before heading to work, but can with no problem once I'm at work creeping though the parking garage. So I think this rules out any gear slack or other such mechanical slop that could make noise when load is first applied and then again when released. Also it's not audible with the windows down. Cabin has to be very quiet to notice (again, like that shift interlock solenoid tick).
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Have a cycling type mechanical noise coming from rear driver side wheel after I turn car off. Doesn't happen all the time...
See video : [URL] ....
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