Sonata NF (2006-10) :: 2007 - Rough Idle And Bad Acceleration But No CEL
2007 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
Passat (B5) :: Still Idle Roughly - Uneven Acceleration PCV?
I have been working through a variety of problems on my 01 AWM with TIP. Im down to two issues that maybe related but Im not really sure. The car idles very rough once warmed up (idles smoother cold). The other is in the way the car delivers its power. Its a un -smooth, kind of pulses at different times jerky and its inconsistent. There are currently no lights on and hasnt been for almost a year. On the last scan the only code that was stores was P01040 (cat). Here is what I have done so far;
Replaces plugs and coil packs Replaced fuel filter Cleaned MAF and TB New N75 valve New DV Cleaned pancake valve replaced 6 vacumn lines with leaks.
Maybe Im missing something here but I think im pretty much down to the PCV system under the intake. Should I just order a rebuild kit from ECS and dig in?
Golf IV R32 :: Uneven Idle / Slight Surges Under Acceleration
OEM plus. 93k. Um tune. Evoms intake.
Did the plugs and coil packs, fuel filter, cleaned throttle body (Did a vagcom alignment) as well as some other insignificant maintance.
Car ran fine for weeks after, but recently it has started to bounce around randomly at idle. Like 650rpm(normal) for a few seconds. Then it will Slowly climb to 800rpms, hold there for a few seconds. Then back down to 650ish for a few seconds, then back up to 800 for a few seconds. And so on. It's very subtle and very random. Then sometimes when accelerating, I can feel it in the gas peddle. Like a slight pulsing power loss. Very slight and of a similar rhythm to the idle issue.
I do have a check engine light for Load Calculation cross check-p1143-001 upper limit exceeded. But that has been a battle I have been fighting for a year or so, and I think that is some kind of vacuum leak, but this rpm issue just started a few weeks ago. The only thing I was thinking so far is that when I was doing the plugs and coil packs, I noticed that there was a slight bit of what looked like dielectric grease on each coil pack already from the factory. So I didn't put any more in the coil packs sleeve part that fits over the plug. So was that a mistake? And if it was a mistake would this be a symptom of that?
Sonata I45 (YF - 2011+) :: AC Causing Rough Idle - Whirring Noise As Driving In Low Gears
My 2011 Sonata SE gets a rough idle when my AC is turned on, and sometimes it produces a whirring noise as I'm driving in low gears. It all goes completely away if I turn my AC off. I'm afraid my AC might go out at an inopportune time. What could it be?
View 12 RepliesSonata I45 (YF - 2011+) :: Creaking Noise When Go Over Uneven Places
Well I had the rear lower control arms replaced for the recall. My car creaks and pops when i go over uneven places like from to road to driveway or up a steep incline since the swap. the noise is loud and comes from the back of the car.
View 1 RepliesHonda - Accord :: 1999 - Rough / Uneven Idle - Stalled In The Past
My v4 99'accord 4cyl with 152K miles had stalled a few months back.*the idle was rough/uneven.. *in stop-and-go traffic sometimes when i would hit the gas pedal, engine would almost skip a beat or two, and sometimes stall..
The car shop changed the ignition switch..they cleaned out the EGR valve which had plenty of carbon build up.after cleaning out the EGR valve the idle was much better.. But over time the idle has gotten worse. i fear another stall is around the corner. Is the EGR valve bad?
Another thing i noticed while test driving in the parking lot, i stop and start again by applying low but uniform pressure on the gas,the engine picks up, then drops, and then picks up and drops a few times before the car finally picks up speed..
Sonata I45 (YF - 2011+) :: Clunk Every Time When Enter A Driveway On Uneven Path
I have a 2011 Sonata GLS with 40K kilometres that's making a "clunk" every time I enter a driveway on uneven path. The mechanic that changes my tires confirmed that it's the right front lower ball joint. It's either loose or worn? Are the ball joints covered under Hyundai's warranty? Can I get this repaired free of charge?
View 3 RepliesSonata NF (2006-10) :: 3.3L - Rough Acceleration Noise?
I'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 RepliesCelica :: 92 GT - Rough Idle And Jerking Sometimes During Acceleration
I recently bought a 1992 Celica GT with 250k miles on it. It has a rough idle and a couple other things that may or may not be stemming from the same thing that's causing the rough idle
Like I said, it has a rough idle and there is a bit of jerking sometimes during acceleration. The exhaust makes sort of a "put-put-put" or "chirping" sound at lower RPMs and the frequency of the sound corresponds to the engine RPM. I do know of a couple things that could be causing the rough idle and maybe even the jerking, but I'm not sure about the sound from the exhaust.
The cooling fans are hard wired to the ignition so they run constantly, so when it's cold out like it is right now it takes forever for the engine to warm up. Is there a switch somewhere that they are supposed to be wired through? Where would that be? Also, the previous owner did kind of a hack job of putting on a cold air intake and I think I may be missing some sensors, especially because it seems to burn more fuel than it should. What sensors are located on the air intake, or are there even some in the stock airbox itself? And would this possibly be contributing to the rough idle and the jerking?
Also, I do get some vibrations when stopped at idle so I think I may want to replace the motor mounts.
Sonata I45 (YF - 2011+) :: Sudden Unintended Acceleration
The owner of the car claims that there was sudden unintended acceleration, and it was 09' Sonata.
Video .....
I thought this should be very concerned to us, since we all drive 11' sonata & up. I heard Hyundai installs some kinds of system to prevent this incident to all cars manufactured after May of 2012.
Sonata I45 (YF - 2011+) :: Loud Squeaking During Acceleration?
So I noticed, driving to work today, that there was this loud squeak happening while accelerating. It almost sounds like an old belt, or how old brakes sound when they are to worn. I have no idea where this sound is coming from.
The only thing is it happens ONLY when the RPM's are 2k-2.5k. And ONLY while accelerating. Other than that it doesn't make that noise.
I've tried revving to see if the noise is there. I also tried while moving, to hold the clutch and rev match to that zone and still no noise. It only happens while in gear it seems.
Sonata I45 (YF - 2011+) :: Die Intermittently On Hard Acceleration
Driving 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 RepliesGolf IV R32 :: Rough Idle With Slight Miss Under Acceleration
Woke up to go to work and it started up with a rough idle, got a block down the road and it had a slight miss under acceleration. Guessing its a bad coil, I've got a spare featured I'd play I I mini miny moe when I get home unless.
View 5 RepliesFord - Explorer :: 1995 - Idle And Acceleration Rough
I have some major problems with my explorer. The idle is rough and accelerating is rough also. If I nearly put it to the floor it almost seems like it studders the power. it will feel great for a second that feels like it's less power for a second then more and less and more and less. When I'm sitting at idle, it will idle fine then after a minute or so it will bog way down and shake the whole vehicle. when that happens I give it some gas and it comes back to normal idle then it does it again after sitting for another minute. I've replaced spark plugs, wires, alternator, oil change and some tires. I've been told by many mechanics it could be the IAC Valve or the fuel pump or the fuel filter or a vacuum leak.
View 8 RepliesSonata I45 (YF - 2011+) :: Ticking Coming From Engine During Acceleration
I've had my car almost two weeks, but today is the first time I've driven it with the radio off. I noticed some ticking coming from the engine during acceleration, and maybe it's my imagination, but it seemed more pronounced with the ECO mode turned on. I know these GDI engines are supposed to tick at idle, but is it normal to hear it during light acceleration too? My oil level looks fine.
View 19 RepliesSonata I45 (YF - 2011+) :: Hesitation Between Gears With Acceleration Around 50 - 65 MPH As RPMs
I have a 2011 GLS with about 47K.
There seems to be an issue with acceleration around 50-65MPH as the RPMs will jump as if to hesitate between gears (just my assumption). Maybe driving style/conditions as I live in West-Central Florida?
I'm the original owner and we have two of the same vehicles.
Sonata I45 (YF - 2011+) :: Acceleration Loss When Going Into 2nd Gear From Stop
I noticed twice yesterday when I was accelerating from an intersection, going into 2nd gear (or 3rd depending on how short 1st is) it feels like it slips into neutral and I lose acceleration. If I take my foot off the gas and coast for a moment then re-apply acceleration, it goes on as normal without any problems.
66k miles... Owned it for 2 years and have had no other issues and have only taken it in for oil changes.
Am I correct in assuming the ATF is supposed to be good for the life of the vehicle?
Sonata I45 (YF - 2011+) :: Rattle In Acceleration Coming From Exhaust
I recently purchase a 2011 Sonata. It sounds like there is a rattle in acceleration coming from the exhaust (passenger rear)
I had the just alignment professionally checked, and it's spot on, but it seems to pull to the left still.
Accent RB (2012+) :: Car Started To Surge / Rough Acceleration Or Idle
While driving on the freeway my car started to surge as if it was starving in fuel. I had to press more gas to go the same speed. My gas tank was at a 1/4 full so I pulled into the gas station to fill in gas. As I was leaving my car could not accelerate while pressing the gas pedal. I could floor the gas and it would go only five miles an hour! The engine temp was okay, no engine lights, and no weird smells. I was fortunate to be close to home and slowly made it letting cars pass me on the side. I called the road side service who towed my car to my dealer. They checked for codes, ran fuel injector cleaner twice through the system, checked the fuel pump, and the pressure on the fuel system, no problems. The third day they gave me a Sonata for a loaner and I allowed the service manager to drive my car to see if the problem reappeared. No problems found and I picked up my car today. The problem hasn't reappeared yet but I am keeping track of any rough acceleration or idle.
View 11 Replies