Sonata NF (2006-10) :: 2007 3.3L - Cold Start Hesitation / ESC-Off And CEL Illuminates
Nov 15, 2013
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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Ok, got a hesitation when the engine is cold, almost feels like a miss. Dealer could not find anything and there are no engine codes. They wanted to replace the plugs with new platinum plugs. I said did you pull any plugs, not that is what the tech said it could be. Could it be the Mass air flow sensor? Or a coil. After a mile or 2 it is fine. I switched to shell premium since dealer told me I had to get a decarbonization from using cheap gas. I used exxon regular and BP regular with a treat of premium every few tanks. But now I am on shell and they said I needed another decarbonization, This is getting rather expensive, I may go back to my local mechanic once the warranty is out. But the hesitation puzzles me.
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When I'm driving without a passenger, the passenger seat belt reminder light illuminates and stays on. Is there some sort of computer or weight sensor in the seat that trips this indicator light? I've noticed that sometimes, if I push down on the seat or move the seat forward or back, the light will go off. For the most part, however, it comes back on and remains on.
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I have a 2007 3.3L Sonata.
The car has been sitting for around 8 hours. Wh en I start it, the idle moves up and down about 100rmps. When I drive off there is a slight hesitation until I have driven for about 10-15 minutes. The idle is nice and steady after the too.
If I use a fuel system cleaner, it appears the car is fine for awhile and then the issue comes back.
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Recently I replaced the unison ring on my turbo, EBP sensor and cleaned carbon out EBP tube/upper part of motor. After doing so she seemed to run fine but not like I remember when I first got her. Plenty of power but ever so slightly off, only an owner would notice. Few weeks later she hesitates a little bit while she's cold in the morning. I let her run 3-5 minutes b4 actually driving but as u know it's a little while to get up to operating temp. Temps seem OK 190-200 EOT/ECT. Fresh oil/filter, air filter, coolant, EGR was cleaned out a little while back and EGR valve replaced 25k ago. I'm not sure where to look at this point...the motor has about 30k on it.
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I purchased a 2007 Sonata with the 3.3L about six months ago. I really like the car, it has a lot of good features and lots of power; however, I am starting to have problems with the car. On accelerating from a stopped position the car almost quits (hesitates severely) and then picks up and goes on normally. Also, between 40 and 50 mph the car starts to jerk pretty hard for a few seconds and then it straightens out and runs normally again; it will do this repeatedly if it is kept between 40 and 50 mph.
When this first started happening the CEL would come on randomly and stay on for a day or two and then go off. While the CEL was on I took it to Autozone and had them pull the code, they said it was the crankshaft position sensor. Well based on the symptoms the diagnosis made sense. I replaced the sensor and the car seemed to be running normally on the 30 minute test drive. The next day my wife drove to work and she said the same symptoms had come back. It has been several weeks since I replaced the sensor and the CEL has not come back on. I have seen several postings about the spark plugs and wires and that is my next step. BTW the car has 94k miles.
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Ok, I have a 2007 Sonata SE and it's been doing this squeaking for awhile when the front suspension is put to work, it's annoying, and it's embarrassing. Now the colder it is outside the louder the front squeaks, but then when it's pretty warm outside say 68 F or above maybe, it never squeaks it just clacks over bumps exactly the same sound as my coilovers that needed a seal, just verifying is this my Upper Control Arm bushings?
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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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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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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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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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Started right off in the morning, then parked it at the grocery store. Returned with groceries and car wouldn't start. Ran down battery trying. Called Tow Truck. Jumped, but no start still. Finally towed it home, recharged battery. Still no start. Gas tank 3/4 full. Then bought NAPA starting fluid, undid air cleaner intake area, sprayed 3 seconds (as directed), cranked, and car started. But died after spray no longer around. So, it seems to be a fuel problem. Fuel pump fuse OK. Is it the fuel pump, filter, so on...
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I Have a sonata 2007 2.4L automatic and I just had a start problem today. I turned the start key and nothing no crank, all the light in the dashboard are ok, i can hear the fuel pump and my batery is fine. I tried 5 time to start it and nothing I wait 10 minutes and the car started ..
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Experiencing engine hesitation after a cold start? I've have noticed this and after the engine is warm there is no hesitation.
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