Sonata NF (2006-10) :: Idle Always Rough Whenever Put The Heat On In Cold Weather
My idle seems to always be somewhat rough whenever I put the heat on in cold weather. While in drive I'll come to a red light, heat will be on and I'll stop. The. my idle will bounce down then back up. I shut heat off to test and it only does it while heats on.
View 5 RepliesSonata NF (2006-10) :: Rough Idle At Startup When Car Is Cold / Missing On Several Cylinders
My 06 Sonata runs very rough at start up when the car is cold. It appears that it is missing on several cylinders. This last for about 15 seconds and then the car runs fine. What could be causing this problem? No check engine light.
View 10 RepliesHyundai - Sonata :: 2009 - Rough Idle / No Power
I'm looking to sell my 2009 sonata soon. I had an engine light and saw p0017 a couple weeks ago, accompanied by a tapping noise from the engine that speeds up as the engine does. On Friday I figured I'd take it for an oil change before getting a price on it from carmax, but didn't wanna bother spending a lot to fix whatever was causing the code/noise. My Last oil change was August 2015, 6k miles ago. Jiffy lube said the oil was low and clearly it had been a long time since I had a change (time, yes, but not so many miles, but guilty I guess) so they recommended an engine flush. I said ok. Drove the car home from them and all seemed fine.
Went to drive it Saturday night and it shakes and the lights flicker and I didn't seem to get any power, I was afraid to drive it and wasn't even sure I'd get enough power. My battery does this weird thing sometimes where it's almost dead in the morning (no lights on and no parasitic draw, I've checked) and if I try a few times to start, with each try it gets better until it starts. So I charged it with a trickle charger and tried again but same problem. After this started it was also giving me a p0035 and p0135. I had it towed to a mechanic and they said something big time busted with the motor and it needs to be replaced. He said he didn't even pull it into the garage, he just did something in the lot.
I'm just looking to get it into good enough shape for carmax to give me more than a hundred bucks. I just decided to see if I could hobble it to another mechanic for a second opinion. It's still doing the same thing, and if I let it idle the engine dies after maybe 10 or 15 seconds, but if I gas it right away it doesn't Rev up fast but eventually does get up there and then it runs mostly ok, albeit noisier, now with a lower pitch noise accompanying the tap. The p0135 and p0035 are gone but now I still see the p0017 along with a p0170. Am I actually screwed or could it be something else? Maybe a bad alternator or battery or spark plug? Something that could have been fouled up by the engine flush?
Sonata NF (2006-10) :: Very Rough Idle When In Gear
I have a 2006 Hyundia Sonata. I idles really bad like you pulled 5 of the six plug wires off when you put it in gear. Once you start moving a couple miles an hour it is fine. It is also perfect in park or neutral, not a hint of a problem. Put it in drive or reverse and it almost stalls.
View 13 RepliesSonata NF (2006-10) :: Rough Idle While In Gear At Park
2007 Sonata V6 with 72K miles.
The car has developed a rough idle while in gear (i.e. when stopped at a stop light) and park (i.e. after I start the car).
It's starting to get a little annoying since I'm used to a very smooth idle.
I think this issue started within the last 2-3k miles.
Plugs were allegedly changed at 30k. A full tuneup was done at that time.
Wires are still original.
Sonata NF (2006-10) :: Rough Sound In Idle And Drive
In idle and driving the car sounds rough as if a pulley was loose, after checking no pulley was loose but problem still persists. Tried turning wheel left n right n noise didn't go away or get worse its a constant noise, what it may be? Crankshaft pulley? Idler pulley?
View 2 RepliesSonata 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
Elantra HD (2006-10) :: Rough Idle When Cold / Slight Misfire
My moms has a 2010 Elantra with 30,000kms on the clock, and we have noticed since new when the vehicle is started cold in the morning it seems to run rough for about 30-60 seconds then stabilizes.
It's almost like it has a slight misfire, or slight fuel flooded from sitting overnight. Now if course we have taken it to the dealership twice for this issue and dropped it off overnight for a cold start, and both times they cannot re-produce the problem.......surprise.
Sonata NF (2006-10) :: Rough Idle / Sputter And Lurch In Gear Only
2006 Sonata V6 with 98K miles. The car has developed a rough idle, sputter/lurch while in gear, but not park or neutral. No CEL/codes. Have already replaced the spark plugs (OE), throttle body/FI cleaned, MAF cleaned, new air filter, coil packs OK... Mechanic said no vac leaks, FI spray pattern good, good fuel pressure, etc. Vibration dampener looks ok, no separation or wobble. Another post mentioned a power steering pressure sensor, which I will have checked, but the mechanic is at a loss.
View 7 RepliesSonata NF (2006-10) :: 2007 V6 Misfire / Rough Idle But No Codes
I've got a troublesome misfire in a 2007 Sonata V6, 70k miles, which I have been trying and failing to track down for a long time.
More than a year ago, the owner of the car complained of rough idle. When this was first mentioned, I looked at the car, she and I talked, and I concluded that she hadn't changed the oil in some 20k miles. ...... Nothing else seemed wrong. I changed the oil, thinking that what she needed was an oil change.
Some time later, I was in the car myself and all of a sudden felt a strong bucking. Must've been a misfire. I recommended taking it to the Hyundai dealer, thinking the so-called 100k mile powertrain warranty would cover whatever it was (it didn't but whatever).
We drove it to the dealer. The dealer firstly informed us that the CEL had burned out, so we had missed some codes. The dealer further us the car needed new plugs and replacement of both upstream O2 sensors. Here was what the mechanic wrote:
"BETWEEN 35-40 PUT CRUISE ON AND WILL FEEL. CHECK AND ADVISE COMES AND GOES. MULTIPLE CODES STORED IN SYSTEM. ... P0300 RANDOM MISFIRE (ACTIVE), P0140 O2 SENSOR CIRCUIT NO ACTIVITY, P0154 O2 BS S1 NO ACTIVITY. WATCHED O2 VALUES AND FOUND ERRATIC READINGS. FOUND TSB 10-FL-012 SUGGESTING REPLACEMENT OF BOTH UPSTREAM O2 SENSORS. RECOMMEND COMPLETE SYSTEM TUNE UP FOR RANDOM MISFIRE. HOWEVER MISFIRE COULD BE RELATED TO O2 ACTIVITY.
So the owner went to a different mechanic and had the plugs, upstream O2 sensors, and one of the downstream sensors replaced. All OEM, I believe. ($$$!) (O2 sensor parts 39210-3C100, -3C200, and -3C400) Dunno why the downstream one was replaced, not my doing.
Following this, there was no real improvement. No codes either. The problem comes and goes, so maybe I thought it was fixed, but it has come back. Sometimes, it can be felt just slightly when the car starts cold. Other times, it can be felt just barely when driving at a consistent speed. Sometimes, the problem becomes really bad and jerks the car around. Other times, nothing.
What to check next? Coil packs? Intake manifold gasket? She never gets "top tier gasoline," but I would be skeptical that that's the problem. These are the top three suggestions I've heard.
Sonata NF (2006-10) :: 2007 - Rough Idle And Even Worse After Gas Fill Up
So my sonata 2.4L has been freaking me out lately. Once it has been driven and warmed up good, it starts to idle rough at rest at lights and in traffic. Now the crazy thing is it idles even more rough if I switch it into neutral during those stops. One more thing is it idles the worst after I fill up with gas and get stopped at lights.
So what I have done:
Cleaned the MAF sensor with MAF spray
Changed spark plugs (I4 so it comes with coils not plugs)
Put Lucas Gas treatment in
So I'm getting no check engine light. So all I can think of is fuel filter. Or some other sensor. I mean I know it could be a coil so that would be the next thing I check. What this could be?
Elantra HD (2006-10) :: 2009 Engine Rough Idle After A Run
Have a 2009 Elantra 4 door, manual. It is at 52000 kilometers and recently in the spring changed the oil, I run Full synthetic.
Lately its been really hot and the following problem occurs, no engine light or anything. But if I start the car cold it idles no problem, nice an smooth, If I go out for a 30min drive, come back and let it idle its rough. Not crazy rough but its rougher than it should be. I have no power issues, it pulls well, never stalls. If I shut it down and wait a few hours, engine still hot, but not super hot, start her up and runs well, no rough idle.
Go out for a 15-20 min drive and park it, idles rough. I checked the usual, wires, plugs, pvc valve seems good. Engine temp is normal also. I did some searches on the site but come up mostly with cold idle issues, not great when cold not so when hot.
Accent MC (2006-11) :: 2009 - Super Rough Idle / CEL Came On
I have a 2009 Accent and after about 20 minutes of driving it started running really rough and my check engine light came on. It's worse at an idle (feels like it's going to stall out) but isn't quite as bad when I rev it. My first thought is water in the gas tank since we've had a lot of rain for the past week or so and I filled it up a day or two ago.
View 2 RepliesSonata NF (2006-10) :: 2009 - Abrupt Downshift At 20 Mph When Cold
My 09' has developed the abrupt downshift issue at 20 mph when cold. Once the transmission is warmed up, the problem goes away. There is a Service Bulletin on this problem so it is known and a fix is in place. The fix according to the Service Instruction is to remap the transmission software.
How this remap affected their vehicle. My car has been returning great gas mileage, and I am concerned that this fix could hurt that. If mileage is adversely affected, I'd rather live with the downshift IF it won't hurt anything.
Sonata NF (2006-10) :: 2009 - AC Is Blowing Cold But Not Hard
Basically when I have it cranked on high (level 4) it feels like its blowing on level 2. some times when I start the car it doesn't even turn on. I have to tap or hit under the glove box for it to start. Is it wiring or could it be AC Blower fan or something else.
View 3 RepliesSonata NF (2006-10) :: 2009 - Harsh Downshift To 3rd When Cold
I just bought a 2009 Hyunda Sonata, 4 cylinder limited edition with 82k miles on it about a month ago. It was maintained to the suggested maintenance schedule by Hyundai dealers prior to me owning it.
after about 2 weeks, it started having issues when slowing down. I narrowed it down to being a harsh downshift from 4th to 3rd when breaking when cold. After driving for 10 minutes it doesn't do it anymore.
My temporary fix is to manually downshift it into 3rd when I have to slow down. It seems to be that it stays in 4th too long and shifts late into 3rd, but I wouldn't think downshifting late would really matter.
Sonata NF (2006-10) :: 2009 V6 - RPMs Going Up And Down After Cold Start
The last couple of times I've started the car from a cold start the RPM's fluctuate up and down for about 30 seconds and then it stops.
View 8 RepliesSonata NF (2006-10) :: Rough Idle In Gear - Lurch While Holding The Brake Down
2006 Sonata 2.4 (4-cyl)? My Sonnata has rough idle while stopped and in gear feels like it wants to lurch while holding the brake down, runs great at running speed. I did have the problem with it stalling while stopped but cleaning the throttle body remedied that problem. I've changed the spark plugs and one coil,the pcv valve, the front O2 sensor (with a universal spliced in sensor), and the air filter has been changed as well. I keep getting P0304 (cyl. 4 missfire) and P0032 (O2 sensor), I've swapped out both the coil and spark plug with another cylinder and the code still shows for cylinder 4. I've also checked for vacuum leaks and I can't find any.
View 4 RepliesSonata NF (2006-10) :: Rough Idle / Lack Of Power Under 2000 RPMs
I have a 06 sonata 3.3L v6. I have been having misfire problems and lack of power under 2000 rpms and at idle when I am either a stop or just warming the car. What is happening I feel it shake and feel the misfire but after it gets up after 2000 rpm at highway speeds its completely fine. It struggles getting up to speed if i press on the accelerator. I have changed the spark plugs and all the ignition coils maybe about 2 months ago, I have also have changed the camshaft position sensor for the rear bank. I believe that it could be the crankshaft position sensor but I want to make sure....
Obd2 codes: p300,301, 303, p0012, p0011, p0014,