Sonata NF (2006-10) :: Very Rough Idle When In Gear


Jun 1, 2012

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.

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Sonata 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.

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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.

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Sonata 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.

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Sonata NF (2006-10) :: Automatic Rough Downshift Into 1st Gear

My 09 Sonata GLS has 50k miles on it. I bought it as a demo model with 9k on it (regret that) as new ... who knows how it was treated.

at 40k miles I noticed that in the morning when I was braking the car would feel like it was slipping out of gear momentarily and it was pretty rough. After a few minutes it would stop and I could continue on my way. The car is an automatic. I noticed it if I let the car decelerate enough that it dropped into first on its own, or if I used the brakes. I figured it must be due to the cold weather or something and was hoping it would clear up. This was only happening after 8 hours of non-use, overnight in the cold.

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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?

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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

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Sonata NF (2006-10) :: 2009 3.3 Rough Idle When Cold

I have 114,00 miles on my car. Plugs changed and decarbonization done at 99,000 as well as ECM reprogram or update ($99). Anyway, when my car sits overnight and starts it is getting a rough high idle until I feather the pedal or give it a minute or 2 and it is fine. It is warm now in the 70's and this just started. I had it to the dealer for oil change and they looked at it. There are no codes, they recommended changing the plugs and doing a decarb again. So I told them if I need plugs there is something wrong, Iridium OEM were installed.

Anyway, they suggested changing the throttle body since it has new sensors. I have have the TPS replaced before when engine was surging. They told me there are 2 sensors and one could be bad in throttle body. I don't get it, I use Hyundai air filter now and change every 15,000 miles and get oil changes regularly and they use Quaker State Synthetic blend. I am wondering if maybe I have a faulty PCV? I don't think that has been changed. Don't even know what the interval is. Previously I was told there was none, but I disagree.

What would cause me to get carbon build up like they keep telling me? I don't want trial and error and throw parts and money at it since there are no codes. I was going to drive it til it throws a code. I do highway driving in suburban area, mostly 65 mph. The car runs good, still the intermittent hard downshift when slowing down but nothing like before the tranny was replaced.

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Sonata 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.

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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?

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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.

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Sonata 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,

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Sonata 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.

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Ford F-150 (2004-2008) :: 2006 - Rough Idle In Gear / RPM Is At 600 - 700 And Vibrating

I just bought an 2006 f150 4x4 with a 5.4l 3valve, and this morning when I pulled into work it was idling Rough as I let off the gas and rolled into my parking spot. No check engine light or nothing, just when it's in gear Rpm is at 600-700 and vibrating. When I shifted it into neutral or park it went away and the engine ran smooth. According to the oil pressure gauge I've got good flow. I was told from the dealer that they replaced the cam phasers, timing chain and put new spark plugs in it. What the issue is here?

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Sonata NF (2006-10) :: Rough Idle - Codes For Power Steering Pressure Sensor

My car has had a rough idle (no MIL). Scanned for codes and got the following:

P0552 - Power Steering Pressure Sensor - Low

P0553 - Power Steering Pressure Sensor - High

I'm picking up the part at the dealer this afternoon. I printed out a diagram of the component location, and it looks to be easily accessible.

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Sonata NF (2006-10) :: Check Engine Code P2187 - Rough Idle After Fill Up

I have a 2006 Hyundai Sonata with a 2.4 liter 4-cylinder engine. After filling the gas tank, the car idles roughly, but accelerates and performs fine at higher speeds. The rough idle lasts about 5-10 miles and then goes away.

Six days ago, I changed the spark plugs and air filter. Four days ago, I filled up with gas (and had the same issue with the rough idle). This morning, I started the car and idled it for 2 minutes while I scraped ice off the windows. I drove the car about 5 minutes and the check engine light came on. I took it to Autozone and the code given was P2187, System too lean at idle bank #1. "

Autozone suggested that it could be an air intake fault (MAF sensor), fuel pressure, or vacuum leak. They also said they have a MAF sensor cleaner to try. I am not sure if the rough idle after fill-up and check engine are related. Also, I don't know if the spark plugs or air filter could be related to the check engine. I was planning on making some easier checks first such as hoses near where I worked last weekend, especially near the air filter. Cleaning the MAF sensor is easy too. I was also going to check for vacuum leaks (incl. intake manifold) and recheck the spark plugs.

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Sonata NF (2006-10) :: Intermittent Rough Idle Caused By Power Steering Sensor Switch

I've been experiencing an annoying intermittent condition on my '07 Sonata (Lambda V6). I wanted to share this in case any of you are experiencing intermittent rough idle complaints in your Sonata (4G) as well. I was finally able to get it into the dealership during the malfunction; in my case, the MIL never lit. Here are the symptoms: ONLY after being fully warmed up, when coming to a full stop, or using just idle speed to, for example, pull into a parking space, or inch up to a stoplight, I would experience a very rough idle (I could hear the engine sputtering with the window down), see the RPM gauge bouncing, and feel the vehicle going "putt-putt-putt" as it tried to keep running under what seemed to be a misfire or too much load. The problem occurred more noticeably with the A/C off but still did occur with it on as well. While exhibiting this problem, acceleration from a stop gave a slight hesitation as well, but once going faster than 1,000RPMs, the problem went away totally. I thought it must have been my imagination until one day, I pulled up in front of a glass window and could see the reflection of my car lurching forward as it struggled to keep idling. Getting it to the dealership while it was behaving badly was the hardest part.

Once I got there, I got a tech to ride with me and finally, after 3 visits to the dealership, someone else witnessed the problem. Up until now, I've been asking people, "Do you feel/hear that?" "Huh?" I digress... The tech immediately said he thought it was a power steering issue and he thought there was an upcoming bulletin on it. I was sure he was wrong, I was thinking it had to be the spark plugs, wires, MAF, or TPS.

After getting the part in for me (Power Steering Sensor Switch) they put it in today and my vehicle is just as new again. It was never a serious issue, but was rather embarrassing to try and show off my Sonata and have it stutter and sputter like that it idle.

This part is complete speculation; maybe a more knowledgeable person can jump in here and correct any logical errors: Apparently, there is a switch in the Power Steering Unit that detects highway speeds versus slower speeds. When vehicle speed is above a certain limit, the power steering pump is either turned off or "turned way down" (so people get the stiffer feel of the wheel at highway speeds). When the vehicle slows down to idle (to be detected by this switch), the vehicle expects the power steering pump will draw full power from the engine and needs to have a slightly higher idle speed to compensate for the load. My switch was malfunctioning; it was not registering to the ECM that the power steering pump was under load when it actually was; the vehicle then did not bump up the idle speed appropriately, and thus, the rough idle and hesitation.

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Sonata NF (2006-10) :: Throttle Body Cleaning Due To Rough Idle Occasionally / Code P0106

Trying to clean the throttle body on my 09 sonata 2.4L due to rough idle occasionally (throwing P0106, replaced MAF sensor still same problem), one quick question, is it okay to force the valve open (with connector disconnected of course), and is "re-learning" necessary and what's the proper way to do it?

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Sonata NF (2006-10) :: Slight Engine Rattling Noise At Idle RPM In Gear Or Park

I have a high milage (210K) '07 2.4L which has a slight engine rattling noise at idle RPM at cold and operating temps, in gear or park. It is a fairly constant noise at idle but does vary a little. Otherwise, engine/tranny operate beautifully with no obvious problems.

I am concerned this could be a timing chain/tensioner related issue although I also wonder if it may be some other component. I have not been able to determine the source or location of the sound.

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Sonata I45 (YF - 2011+) :: 2nd To 3rd Rough Gear Shift

I bought my 2011 sonata gls last year and it has always had a bit of an issue when shifting from 2nd to 3rd. The best way to describe it would be if someone where dumping the clutch and you get that sudden, hard acceleration with a bit of rev flare and then back down the lower revs. It doesn't do it every time it shifts, but enough that it is very annoying. I've had it in the dealership twice for this issue but I get the same "We can replicate the issue" song and dance. They tell me there is no code, and no history of any code. I had the trans position sensor replaced under warranty late last year.

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Camry :: 2009 LE Rough Idle When In Gear

I just bought a 2009 Camry LE (4 cylinder) about a week ago. It's only got 10K miles on it. Ever since I got the car, I've noticed a very slight vibration when stopped and in gear. It does this when the engine is cold and warm. It only does this when I am in gear with my foot on the brake and stopped. I still have warranty, should I bring it in to the dealer? Is there a simple fix for this? Or is this normal?

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