Sonata NF (2006-10) :: Motor Shaking Violently At Cold Start
Feb 23, 2012
My 2007 3.3 Sonata has begun acting up at a cold start up. The motor shakes violently and I have to cut it off and try again. It normally smooths out. This has happened intermittently two or three times in the past three years but happened twice today.
I am out of town at the moment and my wife has the car. She is worried about driving. I am thinking it is some type of sensor etc. If I knew what it was I could have her take it in and I could monitor the repair process.
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I have a 2010 Sonata V6 that I bought new. It has a little less than 50K on it. I tried to start it today and it made a terrible noise then died seconds later. I popped the hood and then started it again and the engine was shaking violently in the engine compartment and making a terrible knocking noise. I had driven it 12 hours earlier and it ran fine. I called a tow truck and had it taken to the dealer but if I know my dealer, since it is Sunday they probably wont get to it until Tuesday. Also, this car has had the signature V6 valve cover leak that has been fixed 3 times. I noticed it was leaking again about a month ago and I have just been checking the oil and adding it as it needs it. I dont think the engine ran out of oil because I checked it before the tow truck came and it was between low and full.
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I have a 1983 chevy k-10 with a 350 and a th-350 trans. Every now and then it will start violently shaking as I'm going down the road. Almost feels like it's trying to engage into 4WD. But if I pull over and stop it will quit and i can resume driving. It was like every couple of months and only when i hit a large bump but now it's becoming more and more frequent to where i can't drive it. I've replaced the u-joints on the drive shafts, the manual lockout hubs, wheel bearing etc. I had decided it had to be the transfer case but my gut keeps saying it's the ball joints even though they feel good when you check them. I want my truck back.
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Could not find anything about this on a search. I have 2 Sonatas. An 08 and an 09 both are 4cylinders. The 09 was purchased used in June of this year. With the colder weather setting in I have noticed that the 09 when started from cold jumps to 2500 rpm and settles to around 1000rpm for a short time then slows down a bit more to what I think is the normal idle speed. My 08 never goes that high and settles down to a normal idle quicker. If I read correctly the 08 and 09 have different air metering systems. Is this idle thing normal or am I dealing with an issue?
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2005(its NF model) Sonata 2.4 petrol manual. 75000 miles. On cold start makes knocking sound( sound like Diesel). After coupe of minutes when warms up the knocking sound gone.
Also when i start driving( still on cold engine) i hear that sound only when i let go from gas pedal and only in range of 1800-1500 rpm. When i accelerate i don't hear that knocking sound.
I think is not belt tensioner because sound is much longer than couple of sec.
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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.
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is it possible to get the heated seats to come on from a cold start automatically?
If i turned the car off with the seat heaters ON and then used my remote starter; i want them to come on without me having to push the button.
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Relative owns a 2007 Sonata 3.3L V6 (58k or so), purchased from in-laws so no warranty, unfortunately. Recently, in cold weather the car has developed hesitation issues upon start up, ESC-Off light illuminates and CEL. Has to restart for somewhat normal operation.
Had a chance to look at it today and CEL had already turned off and only code stored is P2135.
Researching issue (mostly here, so thx!), looks like TPS is faulty and can be replaced separate from throttle body to save $.
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Has the engine cover on, hear rattling when they first start up their car? It only last about three seconds, and its only from a cold start normally.
I was told not to worry about the sound because its just the engine cover rattling a bit, but it is rather annoying. It makes quite a racket. Should I just take the cover off?
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Recently, our 2009 Sonata jumps to relatively high and not normal RPM when start cold (and I don't mean winter-cold; I mean first start in the morning). It jumps to around 2500 rpm for 3-4 seconds before it goes down to the normal 1200-1300 or so for a cold start.
Also, not sure if this is the normal Sonata engine sound, but when we push the accelerator it sounds like the engine is knocking, almost like a whistle of fuel flowing.
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Two months ago I bought a used 2006 Sonata v6 with 54,000 miles. After a few hundred miles I began to hear a rattle on cold start that lasts approx 5 secs. I did my research and saw the TSB concerning the timing chain tensioners. The TSB instructs the dealer to turn the engine off after reaching operating temp then restart after 10 minutes. If there was no noise after the ten minute start then the car is operating normally. My car does not rattle after the 10 minute start up. I just can't see this as a normal characteristic. What could be causing this noise?
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2006 Sonata 3.3 V6 with 101,000 miles. At a cold start there is a loud whining noise coming from the engine on the passenger side. After the car warms up the whining goes away. The car has not had any noise before. It is progressively getting worse.
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2006 Sonata LX. It's only on a cold start up and lasts for about 30-45 seconds tops..and then it goes away. Car has 74k on it. Treated well. Only use synthetic oil and no check engine lights. Last oil change I put 5w 30 in it. I know it says to use 5w 20. Could this be the problem?
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Bought my 2006, V6, about 2 months ago. This morning was the first really cold once since I bought the care. When I started it today, the idle speed was about 1200 RPM. It took a few minutes to warm up and then the idle speed dropped to normal. Quick question. Is this normal?
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Recently I notice, when I'm going 60+ and then I need to slowdown, my steering wheel starts violently shacking. Plus I have watch with metal band and it it's making even more noise when it's starts to shake. Sometimes it's not that much to slowdown, but that shaking is too much. It's not ABS, because when ABS working you feel it in brake pedal, here is in steering wheel.
Also, I would like to mention the fact that I need to change my brakes! Now I don't know if its because of my brakes or some other problem.
Not that I need it, but this though keeps popping up every now and then. My speedometer shows 160, but I can go only 125! I was told that its some kind of chip that prevents to go higher. Is there a way to take that limit off? This question is purely for my curiosity.
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Have a 2004 Fx4. Lately its been shaking violently when i accelerate. When I turn the overdrive off it stops.
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I got in, stepped on the brake pedal and press the power button. Then the Prius ICE started, it started clanging and violently shaking the entire car. The clanging was sounded like metal on metal or something, it was loud and it was like the engine was seizing up. I stepped outside and the whole front end was buckling up and down. From my perspective, it seemed like the car wanted to lurch forward if I didn't have the parking brake engaged. I had Park engaged and also the parking brake on. I thought it would go away but it persisted. I turned off the car and immediately restarted. When the ICE started the 2nd time it felt a bit rough but finally the clanging noise went away. I didn't have time to look on my scanguage for any codes during the event. Did this cause any permanent damage?
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Years and years ago, I had an issue with my trusty '02. The steering wheel would shake VIOLENTLY back and forth. I went round and round with Toyota, but at the end of all the angry phone calls and emails the issue never got fixed, but they paid for an after market steering rack. I wasn't about to pay the 4-5K to get the issue fixed, so I just pulled the PS relay, and have been driving merrily along with no power steering for about 90K miles. I'm now at about 195K.
About a month ago, I noticed some symptoms.
1) some play in the steering.
2) when I went over some bumps, I could really feel the bounce, and it felt like metal bumping into metal.
3) when I punched the accelerator, there was a delay and a "thunk" feeling.
I was coming up on a major servicing, so I took it in to the dealership. They sorted out a few things that I knew were overdue (wheel bearings, battery coolant, transaxle lube), and came to the decision that the steering problem was that I needed a new rack. I told the gobsmacked mechanic that I just happened to have one, and they put it in, and they recalibrated the steering sensor paddles so that I would again have power steering. When I started the car up in the dealership lot, VIOLENT SHAKING. They took it back in, and declared that was because my ignition battery was marginal (which it was), and that a new battery would sort this out. I thus spent far too much money on a new battery. Two days later, wheel starts shaking, and again I pull the relay. All is normal again.
The questions are these:
1) Can that kind of shaking be repaired?
2) Could it really have been a battery issue? (the battery reads a nice even 12.6 and has a wonderful warranty)
3) Was my issue just tie rods the whole time?
In the meantime, I'm going to get 238K (distance from earth to moon) if it kills us all.
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My 07 prius with 190k started shaking violently when going down hill if I press the gas or brake at all is goes a way suddenly, this happens only around the high 40's to low 50 mph range and once at 75, this happened just after my tires where balanced and rotated brought it back they re balanced them and said they balanced out perfectly and the problem still protested. I drive on dirt roads all the time and i hit a big pot hole earlier last spring but the issue just started after the balance a week ago.
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My 02 f250 started shaking violently until when I accelerated and the mechanic said it was the wiring harness in the computer. He said it was caused because of over revving I think it was just because the harness was old. Is it because of over revving? Will it happen again?
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2008 f250 standard cab long bed 2wd base model 5.4. This thing has been great for the last few years i i owned it but it developed a shake since i got new tires. My mechanic mounted 4 new Hercules Terra trac at 2's on my 18 inch wheels (275 70 18) and when i got the truck back it was shaking violently at anything over 45. Mechanic says the new tires are heavy and its affecting other things...sounds plausible. So here i am a month later with a New steering stabilizer, all new ball joints, new shocks, new u joints, and 1 new tire (he said 1 of the brand new Hercules had a broken chord). The shake is 80% gone but this truck is still not the same. Anything after 65mph and it has a feint wobbly bouncy shake. I don't think its the dreaded hop that everyone gets on these. I have 2 theories:
1. These cheap tires just suck and will never be right
2. The cheap junk Monroe shocks he put on are way too soft to do anything
so what do i do? Should i get some crazy shocks or will that make this truck even bouncier? Im worried about making it even stiffer than it already is.
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