Accent MC (2006-11) :: Rough Idle - No Power Or Acceleration When Driving
Mar 16, 2014
I have a 2008 Accent SE and I'm having some issues... The car was driving fine the other day all the sudden check engine light came on started flashing then and just stayed on. This happen before and the car was under warranty so the dealership fixed it but now it ran out and it's happening again. Anyway the car is running very rough at idle like the car shakes and acts like it doesn't want to run. Also when driving it honestly feels like the car has no power or acceleration what so ever. I replaced the air filter with a brand new K&N filter, I also changed the spark plugs today. I put NGK's in and the problem is still the same. I had it hooked to a code reader and it said I had a misfire in cylinder 2. I thought the plugs would have fixed it but I guess not.
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After scouring through hundreds of threads on this forum (which is Awesome, BTW), it seems as if this misfire / rough idle thing is fairly common (which is scary!!). CEL is on steady. Had the codes pulled; P0301, P0302, P0303. At the recommendation of the mechanic, I had the plugs replaced...no improvement. He then replaced the ignition coils...no improvement. Just finished replacing the MAP sensor. This actually had a VERY temporary positive effect. However, after about 5 miles of driving, the misfiring returned. Took the car to the Hyundai dealership, and they acted as if they didn't want to fool with it. They referred me to a couple of local repair shops...????
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My mom has a 2011 GL Hatchback about 20k km's... She decided to take my car this Saturday without telling me and I was stuck with hers.... All of a sudden the check engine comes on and at idle there is like a bogging going own. (Shaky putt-putt-putt-putt) early acceleration is lacking power and it smooths out at higher rpm's.
I can do minor things on my own like plugs and brakes, I would love to be able to get it running smooth again.
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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.
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I'm an Accent 2000 gs owner and since a few days i had this problem. It has a bad idle and looks like it will stall... need to give some gas to stay alive.
Bad acceleration too, it misses some gas. (puffing, rumbling, shaking a bit). After accel, it's ok until the next red light.
Now I can't even drive cause it's worse. (too difficult to accelerate). Is it a sensor?
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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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My 2011 Hyundai Accent 1.6 runs fantastic and has since I purchased it three year's ago until two weeks ago when my domestic partners friend changed the spark plugs, oil, air filter and stuff so I could go on a short trip and back. About 200 miles into it I pulled into a rest stop and noticed it was rough before I put it in park. As soon as I put it in reverse it was running rough and sounded like it was going to die. Forty miles later the check engine light was on and it was running terrible. A parts store recommended different spark plugs. A nice man who was there overheard the conversation and offered to put them in for me since I know nothing about doing. He said he gapped the spark plugs at 0.40? When I started it it ran like a dream until about 75 miles later and it began doing it again but the light never came on. It is doing the same thing which is a rough idle when stopped but it smooths out when I put it in park.
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I've had my 2010 Accent for about 9 months. It's got about 63K miles on it. Serviced regularly, no issues there. Yesterday while coming home from a road trip....6 hours there, heavy driving while in town, 6 hours back 2 days later, the check engine light came on the dash. I then noticed that the car was idling very rough. When I put it in gear after starting, I can visibly see the car the shake. Having major problems accelerating, I have to mash the gas to the floor to make it go. Shutting off the air conditioner seems to work a bit, but not totally.
I should note that I live in the South East US, it was over 95 degrees when we left town and the destination was over 100 the entire time we were there. I was told this could be vapor lock, but am not sure about what to do to clear that when the temps won't drop around here for some time. I took it to AutoZone this morning to have them read the codes on the check engine light and was told that their code reader was incompatible with my car.
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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.
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I did not get the specific cel code but its what the guy told me at autozone.
Long story short. Washed engine, let sit for about 30 mins. Car started with flashing CEL and was "puttering" and very rough idle. Drove home took intake off and replace with stock, took spark plugs out and they were not wet. Then let it sit for about 15 mins. Started just fine. No CEL at all.
The accent saved the CEL and the guy told me that Cylinder 1 had a misfire.
My question is, should I do anything now even though the car seems to be running ok?
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I just bought a 2010 Accent for my daughter and this was the 2nd time I filled it up. I realize now I should not have topped it off all the way but I did. The tank was probably bone dry when I filled it up as well. Within 5 miles after I filled it up, it started running rough and the check engine light came on. I stopped it and checked around under the hood. Checked to make sure the gas cap was tight. I drove it again and it appeared to run fine. I stopped by an Autozone and had the code checked. It was a misfire code for cylinder 3.
Drove it home (10 miles) and parked it. I took the battery terminal off and cleared the CEL. When my wife drove it a few minutes later, the CEL came on again and it started running rough. Had the code checked again and the cylinder 3 code came back. The guy at Autozone said over-filling the tank when it was empty probably caused too much pressure on the fuel going into cylinder 3 and that it should correct itself in the next few days. I drove it 20 miles to work today without any problems. It seemed like it had to be related to filling up the tank since it happened a few minutes later.
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I have a 2008 Accent. Yesterday the check engine light started to blink and the car started stuttering and the idle was rough. I've changed the air filter, which worked. But, it was recommended that I change the fuel filter. But, when I went to the parts store, they say that this model has a fuel strainer instead. What is that and where is it on my car? Is it easy to replace?
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I just bought this car from the original owner. She didn't take that great of care of the car. First oil change was done at 8,000 miles for example. Basically if it was broken she would fix it, but didn't do much preventative maintenance.
I just replaced all 4 spark plugs and coils since one was misfiring and didn't want to have to go back in and replace one in another few months. Replaced the AC belt a few days ago since it was cracked and worn. All other belts are fine. I drove the car around for a few hours the next day and it ran great.
Today, the check engine light flashes and then stays on. The car is idling rough at stop lights and acceleration is poor. Previously, the light came on and it was the EVAP system. Not sure which component and I was told it isn't supposed to affect the way the car drives.
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I was in the process of troubleshooting a quick to die battery tonight (ignition on and if you put a load on it like radio and headlights, a few minutes later it needs the booster pack. ) During this time I discovered a loud buzzing coming from the top part of the intake manifold (ignition on but engine not running.) As my battery drains, this noises this thing makes change. I started the car up and let it run for a sec, then back off/ignition back on and it stopped buzzing.
On a side note, the car has been idling like dump for the last month or so. Sometimes it's smooth as silk as it always has been when stopped at a light, other times you can feel a rapid vibration in the steering wheel, seats, and floor. To the point where stuff rattles sometimes. It's definitely at its worst when the engine is cold. I was hoping it was worn out plugs, but they've just been replaced and it still doesn't run right.
Linked is a video, hopefully it works. Is this the IAC valve?
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I have a 2010 2-door accent, automatic. Today after driving about 45 minutes (engine warm), I stopped the car. When I tried to start again, it wouldn't turn over. Turned over on the third try; tachometer read at 0. Managed to drive home (35 miles), and the car did shift from gear to gear, but engine sounds tinny on idle. Turned off car at home and turned back on, still rough start and tinny idle but tachometer appears to be working again. No check engine light. At a loss; I've heard that there are a couple of crankshaft sensors that could do this, but I really don't know. Car is regularly serviced and has new belts (belts look fine), new strut plates, new tranny fluid, all about 6 weeks ago.
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My 07 F150 has no power. I changed the timing chain, cam phasers, spark plugs and all 8 coils and still no power. Rough idle and bogs on acceleration.
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I have been experiencing some issues with my '06 rio5 (same engine as your hyundais). this forum is way more active than the kia forums, so figured id give it a shot here.
I am experiencing a rough idle at start up while the car is low on fuel (<1/4 tank). it idles rough for a few seconds, the check engine light flashes a bit, and then it runs fine.
The car is an '06 rio5 with approx 19k miles on it, five speed manual. Also, sometimes after refueling and it will just shut off while waiting at an intersection. Not sure whether these two issues are related, but thought i would mention it just in case they were.
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Check engine light had come on, the car was running rough at idle and it would crank hard. So I threw my code scanner on it only to find out it wouldn't link. Drove it to O'Riley's and had them pull the codes. It ran rough and had next to no power on the way there. O'Riley's pulled the codes and we got a P0300 (random multiple misfire), P0301 (cylinder 1 misfire), P0302 (cylinder 2 misfire), and a P0496 (EVAP emissions system high purge flow). So once I got it back to the house, she told me that she had the codes pulled once before and that they told her it could be her gas cap so she replaced it. She also stated that she had replaced the plugs about 3 months ago.
So with new gas cap and new plugs, and these codes, I did a bit of research and come to the conclusion that it'd replace the purge solenoid. The solenoid was making a pretty loud ticking noise and when I pulled it off, it rattled so I figured that was the fix. Pulled her plugs and you can clearly see that cylinder 1 was running VERY lean and cylinder 2 was a little richer but still too lean. Plugged the plugs back into coils and laid them on exhausted. Turned the car over and we had spark. Lead me to think the misfire had something to do with the P0496 EVAP code. Put everything back together and erased the codes. Gave the car back to her and told her to let me know if the light came back on. That was Wednesday last week. Sunday she told me the light came back on and the only code that came up was the P0496 again. When I gave it back to heron Wednesday, it would still crank hard but would start.
Battery is new and checked good, alternator is pulling about 14v and checked good and the starter checked good. My dilemma is the code and the hard crank. She told me that it only cranked hard for her once so I am assuming that has gone away but we're still left with the P0496. I am not 100% sure as to how this system operates but I understand it for the most part. She told me that she had just put gas in it before the light came on. Not sure how much time had elapsed after filling it and the light coming on but I do know she put gas in it. If it's a high purge flow, that makes me think there may be a leak in the system but I'm not sure where to go from here without throwing a bunch of parts and money at it.
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I have a 00 Accent with 132k miles, I replaced the motor a year ago with a correct 2000 Hyundai 1.5 with 50k miles. I replaced everything that I could at the time, timing belt , starter, water pump, and clutch. It has been running fantastic getting 40 miles per gallon with zero problems , However in the last week I have noticed a rough idle that seems to miss with a vibration that it didn't have before. I have a noticeable loss of power and torque. My miles per gallon has also dropped to about 25 mpg. My check engine light is not on. I will check the plugs and change the air filter today but I would like to know what else could be causing the problem as I am not really sure what to check.
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2004 Accent 1.6L
Changed the timing belt and water pump this past weekend. I made sure the timing marks aligned before I put the belts on. They were still aligned after turning the engine by hand and still aligned after taking the car out for a test drive. I did not notice rough idle when I started the engine in the garage nor did I notice a rough idle during the test drive.
A few days later I am now noticing the car will idle roughly when I come to a stop. The idle will get rough enough to gently shake the car. No engine light and no unusual noise from the engine.
I am going to check the timing marks again tonight. I suspect the belt may actually be off by one tooth. I have driven over 100 miles since changing the belt so I don't believe it is off anymore than one tooth or else I presume I'd probably have already broken down or been hearing unusual noises.
Furthermore, I do not seem to have any loss in power. I still have good acceleration and no roughness unless at idle engine speed. I do, however, run rough at higher speeds (75+ mph) on the highway, but this was present before the timing belt change. Unfortunately the car does not have an RPM gauge.
Having said all of this, are there any other possible reasons why I might be idling rough now?
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Explorer with 4.0 has a rough idle, just put new plugs & wires, air filter looks good. i did get a new fuel filter as well but haven't gotten to that yet. It has 102k. I have read some info about motor mounts could come lose casing the motor move a little more, not sure about that one. its the wife's haven't driven or looked into it yet, its on the to do list weekend. She also informed that it seems to lose power a little while driving sometimes, thinking possible fuel pump now?
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