2009 Hyundai Sonata automatic: When downshifting from 4th to 3rd it feels like I hit a bump, or like I just hit the brakes hard for a second.
What could it be? It's most noticeable when the car is cold. I have 82k miles on it, so it's still in the "power train warranty".
I bought the car in Nov. It's now pushing 90k miles. From getting to know the car to me the suspension feels stiff. Front and rear for the most part. I need to put new tires on it and i'm sure that contributes somewhat to quality/feel and road noise.
However, (and it seems to be getting worse) when going over bumps in the road I can almost hear a prominent clunking noise from the rear. It's not extremely loud but I can tell it's there. Like I said it's not very loud but too me something back there is going out. I'm not sure what kind of suspension is back there.
I have an 09 Sonata that jerks when automatically down shifting just before coming to a stop or slowing to make sharp turn. Car has 130k miles and I've never changed transmission fluid. BTW...it's been a GREAT car!
View 7 RepliesI'm having in not being able to downshift manually. I can shift up with no problem. I have 116,000 miles on my Sonata that I purchased new 8 years ago. I had the (4 cylinder) tranny flushed about 18,000 miles ago. No other issues.
View 1 RepliesWhen I'm driving, steady mph, my car feels as if I've just downshifted, or that my foot slipped off the gas pedal. When this happens I've noticed that the tachometer drops down from say 20 - 30 to 10 or less! But just momentarily. It happens to a warm or cold engine. It's going to give me a whiplash! I've brought it to my VW dealer. They put it on the computer, and no problem comes up! No lights on my dashboard are on either. This problem is really annoying.
View 3 Repliesi drained the 30000 mile fluid two weeks ago because it was harsh downshifting when coming to a stop... I was curious if others noticed a lot of metal sludge sticking to the magnetized drain plug???..
View 3 RepliesMy daughter has a 2010 Sonata with a 4 cylinder and an automatic transmission. She is pretty frustrated with an intermittent problem. Every once in awhile, especially if the engine is cold, the car jerks while slowing down. She believes it is the transmission when it down shifts. I have driven the car and have not been able to duplicate the problem myself. The dealer recently changed the mapping for the transmission in hopes that would work but it hasn't. The dealer hasn't been able to duplicate the condition either.
View 52 RepliesHow do I diagnose if I have an upper control arm problem?? hmr 1979 did a great job of reporting in great detail with pics, on how to replace a control arm.
My car is making creaky, creaky, sounds when I hit a bump on the passenger front corner. I have been thinking that the "top hat" mount to the strut was bad, but now hmr 1979 has me thinking that my upper control arm has a bad bushing. My front struts are originals with 91K on the odo. However, the struts still seem to perform well. Is there any sure fire way to learn if I have a bad bushing on the upper control arm??
I have a front end noise when I go over a speed bump or hit a pot hole. It is kind of a crunching nise like something needs grease.
The Hyundai dealer charged me $54 to diagnose the problem and told me I needed both upper control arms replaced to the tune. They did force some grease in the bushings.
The car only has 63000 miles.
Just picked up a 2012 GLS two weeks ago. So far I like the car. Unfortunately, I do about 40 miles a day of traffic driving. I have noticed the car seems to downshift from possibly 4th to 3rd right around 35mph. This downshift is noticeable and the engine has to rev to match the change. It is not a high rev, just a noticeable engine braking. Is this normal? I dont feel like anything is wrong just seems like the computers are not sure when to downshift.
When the car comes to a complete stop with your foot on the brake, does the car lower its rpm by 100-200pms? Seems like this is a gas saving technique. I have noticed it when While at a light and I lift my foot slighty the car feels like either the brakes are grabbing or the rpms are to low.
I travel this interstate route often that is somewhat hilly. I always use cruise control. When I got my 2007 Sonata (I4) 4 speed A/T and traveled on this road I never noticed much down shifting. Later my daughter bought a 2010 Sonata (I4) 5 speed A/T, and on this road I noticed the Xmission downshifting sometimes. When I got my 2013 (I4) 6 speed A/T, I started noticing it more often downshifting. I'm sure thats since the final drive ratio is much higher in each successive car. When my wife is driving she doesn't notice but I can tell even from the passenger seat. I can stop the downshifting by putting it in manual mode. but I see the RPMs increase somewhat. I assume thats from the TC lockup disengaging and the CC trying to maintain speed if a long hill. I suppose if the hill was long enough and steep enough that I would eventually lose speed but that doesn't occur(very much). If that is more economically that letting it just go ahead and downshift. Am I the only one annoyed by this constant up/down shifting?
View 21 RepliesI've been driving my wife's sonata to work this week and notice as I start to slow down at around 20MPH the car almost surges a little bit. Maybe I am not diagnosing it correctly but it's almost like it's downshifting rough.
View 37 RepliesWhen coming to a quick stop the transmission has a shutter upon downshifting the shutters when you accelerate quick off of a stop light or stop sign. Also quick left hand turn hear a clunk coming from left side wheel. 2015 Sonata Sport 2.4L
View 7 RepliesI noticed today when I was washing the car that the rear bumper feels loose to me compared to other cars... If I grab the bottom the bumper, just aft of the rear wheel, there can be significant movements of the bumper, and its the same on both sides... I don't see any loose screws.
Tried it with other model cars, the movement range from very small to nonexistent...not sure if it's just my vehicle or if they are all like this by design(or the lack of). The top of the bumper feels rigid enough. Now I kinda want to know if this looseness is causing my bumper to be flapping in the wind at highway speed...
I just installed an Injen intake to my Sonata 2.0T, but now it doesn't feel as quick off the line. It sounds incredible but idk.. just feels a little sluggish now..
View 6 RepliesI have a 3.3 limited ed 09 sonata that I soo enjoy driving. However, two weeks ago the AC stopped blowing completely. It's a fully automatic unit and no air movement in any position at any temp. The compressor is coming on as I can hear it and driving on interstate I can feel the slightest bit of cold air coming thru. I bought a new resistor that was over a hundred bucks and it did nothing. I took the blower motor out and used clip on wires str8 to the battery and it works. ...
View 6 RepliesFor about a year now the ESC light would come on. if i turned the car off and restart it would go away sometimes for couple of weeks, sometimes just for a little while.. I was afraid to take to the dealer not knowing what this would cost. A few weeks ago, I could not get it to shift up to reverse or park..
then I removed the little cover and reset the shift interlock and this seemed to take care of it. on that day the ESC light was on constantly and would not go away.. after the shift interlock reset I didn't see the light for several days..
Then christmas eve the light was on again.. and resetting the shift interlock did nothing? But if i held the button down I could shift... When I mentioned to my brother in law, he asked if the brake lights where working? good question, we checked and no they are not? He messed with brake light switch which was stuck.. and the brake lights started working and the shifter now worked also.. so Monday I replaced the brake light switch and life is good...
I have had this happen the last couple times I use my car in the cold. It has been around 25-30 F and when I pull out of my driveway the first time/maybe second time I touch the brakes it forcefully stops and feels as though only the front brakes are engaging. As I drive the car that trip it has yet to happen and the brakes preform normally. I am not used to disk brakes and I am thinking it is maybe that? The only other thing I could think of is that the brakes need to warm up a bit and pressing them still cold illicit that jerked response. I have read through a number of threads on brakes and I cannot seem to find this happening.
View 4 RepliesPicked up new truck on Thursday, drove it on the hwy for the first time today and it feels like rear end is bouncing. Truck has 150 miles. I'm hoping it's just balacing that it needs, taking it back to dealer on Monday.
2014 F150 Limited 4WD.
My 2009 downshifts hard between 2nd and 1rst gear. Real distinct when stopping at a stop sign. I have 81,000 on it. I looked at older forum's and they said flashing the computer would assist. Just curious if it works for a vehicle with that many miles on it, or if it may be a more serious problem.
View 5 RepliesI get a pop or a clunk from the front drivers side when I brake. It used to happen less often but I took it to the dealer to fix and they lubricated the caliper pins and now it happens frequently. I've read that the Sonata has some issues with the calipers. I would like to repair it and lubing the calipers made it worse.
View 4 Replies