Still getting used to my 2010 2.4 Sonata>Seems hard to get gradual acceleration when I depress gas pedal,instead I get Jack rabbi t take offs ,I wonder if linkage needs to be adjusted.
View 12 RepliesI have a 2010 Sonata GLS 4-cylinder approximately 124K miles which has been hesitating on hard accelerations for about 8 months. It will usually do this when getting on an on-ramp for the freeway or if I need to do a U-turn and get up to speed quickly. What happens is I punch the gas and the vehicle acts as if it's not getting any gas and hesitates or stalls and then it finally takes off. Usually I see a cloud of grey/white smoke behind the car enough that I am unable to see any cars in my rear view mirror.
I do not seem to see a difference when the vehicle is warm/cold. I do not have a CEL nor have had one. I have replaced the MAP sensor, PCV valve and spark plugs (properly gapped). I have done a compression test and am getting roughly 180-185 psi per cylinder. I am not experiencing any oil loss/coolant loss, do not see any oil in the coolant or gummed-up or oily spark plugs. I have also replaced the transmission fluid, doing a drain and flushing the torque converter. I have also cleaned the throttle body, and am using a new air filter and the oil has been changed within the past 1000 miles.
2001 F-350 7.3L / 147K... Lately my truck has a strange anomaly when I take off from a stop. A few seconds into a routine gradual acceleration the engine gets a little "boost" without changing anything on the accelerator. I typically take off from a stop as if an egg is under my foot. And then bam! It's as if I romp down on the gas pedal. Not a lot of increase in rpm's and acceleration, just a hint. BUT NOTICEABLE! Even my wife wondered why I was playing with the accelerator. And, it only does it that first time you start it and take off. I had the glow plugs replaced last week. And it has done it occasionally before but increasingly since. No other changes other than pulling codes.
View 1 RepliesDriving to lunch today I pulled out on the highway and accelerated hard. The Sonata didnt want to shift higher than about 4th gear (auto trans w/ the "slap stick" that comes standard. I laid off the gas and the car seemed to be running fine at that point. 1/2 mile down the road the car just died. I pulled over the car restarted fine. At this point it didnt want to shift well and died a couple times. I stopped for lunch. Afterwards I took it easy, car acted fine. Outside of work I accelerated hard again and the same thing started again.
View 10 RepliesI'm on my second '15 Limited Turbo. Only have 2k miles, but I've noticed an issue with acceleration. When under hard acceleration, especially in 3rd or 4th gear, around 5k RPM the engine starts hesitating. It feels like it runs out of steam. This feeling lasts through beginning of next gear, then the car picks up again. It is actually faster when applying less throttle.
What it could be? It did it since new, I took it to the dealer once, but got some stupid response that it was just rev limiter kicking in (at 5k, right), unfortunately had no time to leave it with them again/show it to them. I also thought it might just go away on it's own, plus I don't usually drive it that hard anyway...
11' Non-Turbo 2.4 with 145k Full Synthetic every 5k (Done me or provided to the quicky lube) Around 80K about 2 weeks after taking it in for an oil change my wife heard a ticking sound coming from under the hood. Pulled over and there wasn't a drop of oil on the stick. It started with about a qt every 1000 miles or so, now it's to the point that I have to put a qt in about every 3 days (1-200 miles)
We cannot see oil anywhere, last I checked the plugs had carbon build up but were not wet. (Recently) We also hear a ticking sound during hard acceleration and a good bit of black smoke coming from the exhaust.
We still owe 5k on it, it's our first new car and I'm terrified the thing is going to blow up before I pay it off. Tonight as I was about to get in the car with her I heard the clicking sound again but this time it was full (just added some yesterday). I have compression and leak down testers, know a little bit but I am nowhere near a "mechanic".
I've recently noticed that when I accelerate really hard on my vehicle it will completely stall out at 40mph. Once I let off the gas and begin accelerating again all is good. However the car will not enable me to just step on when without stalling out.
View 10 RepliesI have a 2006 town and country with a 3.3 and 220,000 miles.
Last week I was having some hard starts and loss of power on acceleration. My check engine light flashed during one episode so I had autozone check the code and it showed a misfire. I changed out my plugs and wires and that solved my issue. It started and ran like new.
Yesterday, I was running errands and my charging light came on. I was about ten miles from home and I decided to go for it. It was night so the headlights were on. Along the way, everything started to dim. Headlights, dash lights, airbag indicator came on and then the van just died. I walked the final mile and we towed it home.
The alternator and battery were both replaced last year in November making them both one year old. AC Delco battery 660 cca and I had a very reputable alternator shop rebuild the alternator.
So before I towed the van home, I hooked up some heavy duty jumper cables from a running chevy venture and let it charge 15 minutes. After the 15 minutes it was just clicks in rapid succession.
I hooked it up to a trickle charger overnight, 12v 2 amp setting. This morning, the van started, idled fine for about five seconds and then started trying to cut out. I kept it running by giving it gas but after about twenty seconds it stalled. I tried to restart and nothing but the rapid clicks. Three more hours on the trickle charger and the same exact thing happened. It started, began to stall, quit and then wouldn't restart.
I noticed today that the power steering reservoir was leaking a decent amount of fluid down onto everything around it including the coil pack. I replaced this today and used brake cleaner to clean all the surrounding components.
After doing some internet sleuthing, I found a thread with the same problem. For this guy, he had a disconnected ground from the negative battery terminal. I chased mine down (G101) disconnected and wire brushed it all clean. Put it all back together and still the same problem.
Here is what I have discovered:
Trying to jump it from another vehicle only results in the clicks. This is true whether the jumper cables on the dead battery are on both terminals or the negative is grounded on the motor. If the battery were the problem, I should be able to jump through it. If the alternator were the problem, I should be able to start with a jump.
After charging the battery, it will start once but then die soon after. Battery with the key off will read just under 12 volts (11.9, 11.6). With the key on, it will drop to the 8's (8.6, etc.) I have not yet had the battery or alternator bench tested. I plan to start with the battery in the morning.
It seems to me that the alternator wasn't charging the battery or it wouldn't have just killed the battery as those accessories should be powered by the alternator. It shouldn't be a starter issue since it will start after being on the trickle charger.
When I accelerate from a stop, the car jumps, slows down, jumps again, etc... I do hear a noise when I accelerate rapidly on the highway, almost like a leak somewhere, but I'm not really sure.
View 3 RepliesMy 2005 3.3 V6 NF Elite has developed a vibration under acceleration. Its not always apparent, but certain road surfaces, and certain rates of acceleration seem to make it worse, when it can be felt throughout the car. The drivers side CV is beginning to click, so will need replacing soon, and I suspect that some bushings around the suspension are worn, as they are squeaking. Could those issues cause such a vibration.
View 5 RepliesMy 2010 Sonata GLS recently started to emitting some noise during acceleration, seemingly come from under the hood. The noise is most noticeable between 15-25 MPH, and is more noticeable when I go uphill. The noise also becomes more frequent with higher speed.
I have a shared m4a file with the noise recorded on Google Drive [URL] ......
I was cruising on the highway and tried to accelerate and no more power. Could feel engine losing power. After I shutdown the car and start again, car was fine.
View 3 RepliesI've got a Sonata NF 3.3L I bought for my first car. Bought the car second hand with 119,000km's. Runs really well but in the last few months there has been a rough sound on acceleration. Sort of like a ticking noise. Doesn't matter if it's warmed up or not. At cruise speeds you can't hear it. What it could be? Ran some injector cleaner through it to no avail.
View 2 RepliesMy car has been vibrating under acceleration since past 2 months. It isn't present in first gear but is evident in second and third gear ,and increases with more acceleration. I replaced engine mounts as they were shot,and got the wheels balanced but the vibration still persists
View 6 RepliesI 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.
View 4 Replies2007 Sonata V6. He's spent many hours and a good chunk of change at the dealership trying to get it fixed and nothing has worked yet. They honestly have no clue whats wrong which kinda scares me.
First off here is his problem. Occasionally when he starts the car it will idle very rough and struggles to accelerate to 30-40mph. When this happens he pulls over and shuts the car off for a few minutes then it will run fine again. When all of this happens there is no CEL or any light at all that flashes or comes on the dash.
Here is a list of things that have been replaced
Fuel pump
Throttle position sensor
Crank sensor
Plugs, wires and coil pack
I have an 06 F150 2wd with the 5.4. Today on my way home I had to cross traffic while getting on the highway and had to get on it a bit. When I gave it the gas the truck down shifted then just fell on it's face until I let off the gas a little then it sped up like normal. It normally runs great but I don't get on it much. I just don't see why It runs great until I try to get a move on.
View 3 Replies2006 sonata 3.3L has an engine miss that is most prominent around 30 mph but not detectable at idle or during acceleration. It has new plugs that are properly gapped. Transmission fluid is good and fresh. I even checked the ignition coils and had all about .9. I even changed the fuel filter. What else could it be?
View 7 RepliesCheck engine light came on momentarily, car had poor acceleration. Light went out and ESC light came on. When the car was turned off and restarted, the ESC light went out.
I scanned the engine, no codes, either open, pending or historical.
Question, could the issues with the two lights be related? Or is there anything else I should check?
2007 Sonata GLS - I4; 55kmiles ... I plan to sea foam on my Sonata as it continues to have slow acceleration and poor mileage. Looking for a picture of the Brake Booster or Vacuum line? I want to make sure I am pouring it in the right place.
View 3 RepliesI have a 07 Hyundai sonata that has a rattling noise only during acceleration and only at just under 2000 rpm's. I went to a mechanic who checked the heat shields and exhaust only to tell me it was in the transaxel and sent me to a transmission shop. the transmission shop told me they think its the hydraulic lifters, and sent me elsewhere.
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