Lexus LS 2007+ :: LS460 - Hesitation / Lack Of Power When Accelerating From A Stop
Jun 28, 2012
I have a 2007 LS 460 with about 50,000 miles. Some 18 months ago, at about 35,000 miles,right after a service, I began to experience hesitation/lack of power when accelerating from a stop. Lexus fixed this by doing a software update to the transmission.
All was well till last month, when again right after a service, the car hesitated and totally lacked power , most noticeable from a rolling stop. Revs would very gradually climb to 5,000, with foot flat on accelerator, yet car barely moving. Once speed built up to highway speeds, car reacted normally. Took it back to Park Place Lexus who held the car for 10 days and did a major job changing the cylinder head, I think per L-SB-0033-08.
A month later, the hesitation/lack of power is even worse then before! I suspect the issue is the transmission, and the big surgery on the engine done last month was not required. After nearly being hit trying to merge with traffic today, the vehicle is back at the dealership, and I took their head tech for a drive. He experienced the problem, but did not venture a solution. He told me they take instructions on what to do directly from Lexus.
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I have owned this car for six months. The car now has 39K. The problem is getting worse.
Re: Lexus 2011 LS460 AWD
Subject: Hesitation / momentary loss of power when accelerating after turn.
When accelerating after a sharp turn with light to moderate acceleration, the car will have a momentary loss of power for about 1, 2, or even 3 seconds. This does not happen often, but perhaps once every two weeks and I cannot replicate the problem despite attempting to do so.
In all cases, I am talking about DRY pavement. It always happens after a sharp turn usually to the right. (Probably because most sharp turns are to the right actually it only happened once on a left turn that I will describe below.) Acceleration is light to moderate NOT hard acceleration.
In one case it caused a serious situation. I had just purchased gas and was entering a busy freeway. When accelerating, the engine had a total loss of power for a couple seconds as a large semi truck bore down on me with its air horns blaring.
I have a strong clue that may debug this problem. Once, when turning left, the car suffered a total loss of power. There was no traffic and I kept my foot lightly on the throttle. The car remained unresponsive. The engine did not stop, but it did not respond and remained this way for at least 5 seconds until I took my foot off the accelerator and then back on to the accelerator. During this period of suspended throttle, I noticed that on the right side of the dash an orange alert symbol was flashing I think it was a swerving car? I assume this indicated that the car was losing traction and the computer decided to cut power until traction was regained. But the pavement was dry, and the acceleration was normal. In no case did I ever sense that one of the wheels was slipping.
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Our 2015 es350 with 2,500 miles hesitates when accelerating from a dead stop, such as from a stop light. We are told this is to be expected with this vehicle. The dealership test-drove the car and say there's no problem. But this hesitation is unlike any other car we've experienced.
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I have a blown LED on a 2007 LS460. Bought a set of the Stop Lamp and started to embark on my little DIY today.
Both side covers are held on by a little plastic hook underneath near the row of LED bulbs. Hence, you will have to press down firmly to unhook and slide the cover towards you and lift it up to remove. (watch my youtube link below).
The center piece is held on by 2 screws (nearer to the row of LEDs) and 2 plastic clips (nearer to the C-pillars). Remove the 2 thumb screws and the plastic clips (twist or turn them 90 degrees and they should come off easily). At this point, remember to unhook the plastic connector.
Replace the center Stop Lamp piece and install everything in reverse order.
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I have sent my 2008 ES350, 47K to a dealer since it has a bit hesitation on accelerating; RPM goes upto 3K easily to get engaged to next one.
The dealer told me that no hardware problem but they did update a tranny firmware. They added that it may work right away or work after 3~4 fuelings.
What would be next step?
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Just purchased a 2010 ls with 20,000 miles on it. Brakes make a popping noise when coming to a stop. Not all the time, seem to get worse as brakes get hot. Have had to dealer twice they have resurfaced rotor, bled system put new pads. Still have noise my service manager opened a trouble in the lexus system and called Atlanta. They said this is characteristic of this car. I drove a couple of other ls cars and did not hear the noise. Not sure where this is going to end up. I saw where the brake actuators where changed on the 07,08 and 09.
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So woke up this morning take kid to school, got about 1-2 miles from home and engine light came on and had to switch to tiptronic because seemed the engine was struggling to move the car and downshift and was able to drive somewhat fine. but at stop signs the car idle and shook slightly then taking off was a bear because it lacked power. I did notice my mpg was reading bout 10-15mpg less then normally.
I going back to bed because I work graveyard and will look at it more when I get up. but the oil looked good and wasn't any engine burning smell. the only odor i think i could smell was almost like coolant. What could be causing this?
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Here is one of the nicest-running van we ever had with a 3.1L V6 TBI Chevrolet engine that always ran too good to be true.
Few days ago it developed a misfire condition that is very pronounced when the engine is hot/at operating temperature - under load it hesitates like it's running in 4 cylinders out of 6. When cold it starts right away and runs good & smooth.
Now the van can't go anywhere - it misfires so severely that the engine stalls and dies at idle.
What we tried so far, to no effect, was:
- changing the spark plugs & wires
- replace the distributor cap & rotor
- replaced the EGR valve
- replaced the IAC valve
- replaced the MAP sensor
We had a lot of 3.1L Chevy TBI engines and none ran so smooth like this one and, all of a sudden, none ran that bad in such a short time...
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Got in my 2007 LS460 and it wouldn't start. No power, no clicking, nothing. I checked the battery terminals and noticed they has some corrosion so I cleaned them and reattached. Nothing. I found that if I jiggled the positive cable the power would light up my dashboard with every light / radio, but it still wouldn't start....and I had to disconnect the cable in order to turn the power off. I had the car towed to a trusted Toyota/Lexus repair shop I've used for 15 years. They connected the cables to the battery and it started right up....but the power steering is out. They tried multiple things to get it working with no success. The only option now is to replace the electronic power steering unit.
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2009 LS460 I have had my car at the dealer a few times for loss of power on acceleration. The last visit which lasted three weeks finally gave a diagnoses. The problem was confirmed by the dealer and the factory reps, a knock sensor picks up a signal that retards the timing resulting in no power, I was nearly run over by a semi the last time it happened. They tried to give me my car back on 7/24/14 with the knowledge that the problem is not fixable at this time but I should drive the car and they will tell me when there is a fix. I left the car at the dealer. I was also told that they had a few others with the same problem that could not be fixed.
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I have purchased LS 460, 2010 with 21000 miles on it. Dealer said he put new Kumho tires on it. But the power steering feels hard, and is not even as soft as my Honda Pilot 2009. I have made an appointment with Lexus dealership for this concern ( I had the vehicle checked by Lexus store before purchasing.) I have read good reviews about Michelin tires, am wondering perhaps I need better quality tires. Do not know what the dealer is going to recommend.
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I have a 2004 f350 with a 03 bullet proofed motor. The truck did not have any power and the turbo wouldn't support until I put a new vgt solenoid in and it ran great for about 3 miles... Stalled doing 65 kinda lacked power while accelerating but got up to speed quick. I pulled over and no start. It is running error code kam on pcm from disconnecting batteries but could this cause the stall and no start? Or should I be looking into icp sensor?
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I have a 2010 accent 2.0 with 110k. When accelerating from a stop it seems to hesitate or miss in the first 20 ft or so. The service engine light has not come on which indicates to me it's not in the emission sensors. Where to start looking?
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My cady hesitates from stop when accelerating just initially and then runs fine while driving. I have changed plugs, electronic ing, wires cap, rebuilt carb fuel filter. What can be causing this???
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I have a '99 passat 1.8t Tiptronic. 106,000 miles. Recently I've been getting a bad hesitation when accelerating from a stop. At half throttle the car kinda bogs down and hesitates then as the rpms get higher it seems to clear out and accelerate smoother. At the same time the car doesn't have the same sack it used to. I checked he plugs, found them very fouled. Replaced them and the problem got a little better, but definitely still there. There has to be a reason the plugs fouled. There is no CEL so I don't really know what to check first.
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I have a 2007 Ford Fusion 4.0L AWD. One day I went to pass a slower car and accelerated rapidly, but the car responded with loss of power and shook to a stop and would not re fire. I took it to the dealership and they said two cylinders were not firing and a fuse was blown. I looked on the internet and some people said their coils go bad or plug wires. I asked the dealership if that was the cause and they said absolutely not, but it's the ECM. They replaced the ECM and 2 days later my CEL came on and I took it back to the dealership and they told me my catalytic converter was bad and I could drive it until I had the money to replace it. Then a couple days go by and I was passing a tractor on the highway, I slowed down to 45 mph to make the pass and as I began to accelerated I felt a thunk, then about a mile later it started cutting out and shaking. This time it would re fire but idle rough. I tried on/off 3 or 4 times then it idled o.k. I then took it back to the dealership and this time they said it's all 6 coils.
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I have 2003 Buick Century. I started having problems with the car after coming to a stop, accelerating - the car starts to go hesitates, then jerks a bit to go. This does not happen every time after a stop but when it does the service engine soon light comes on. Initially I got the P0401 code (I think) and took it in to a mechanic. They could not find anything wrong with the car but did clean out the EGR valve, that didn't work, they worked on my transmission and replaced other parts, still no success.
I took the car to another mechanic who replaced the EGR valve and several other small parts. I still had the problem but this time the error code was P0420. I took it back again and replaced the spark plugs, O/2 sensor, catalytic converter. That hasn't fixed the problem. The mechanic said that they have taken my car for several test drives and the car has not demonstrated the problem. The error message still reads P0420 even after all of the parts have been replaced. The 2nd mechanic has washed his hands of my problem.
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F250 5.4L have had a new fuel pump installed and new spark plugs (one blew out). When accelerating, or at a stop i get a kinda hesitation. It did it when I first bought the truck but put correct size tires on it and it went away. What it may be? I don't have a check engine light or anything and at cruise speed no problem--it's just when a slight load is put on the engine?
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I have a completely stock 2007 F350 turbo diesel with 98000 miles that i just bought . When accelerating from a stop, it runs so rich that it will barely move and it accelerates very slowly . It burbles excessively and spews black smoke . It slowly builds rpm . As it builds rpm it runs slightly better and the black smoke turns into a medium gray the faster it goes . It takes around 20 seconds to reach 3000 rpm on level ground with the accelerator pedal half way down . Once it reaches 3000 rpm, it runs fine and hauls a_s but looks like it still smokes a little.
The temp gauge stays right in the middle and it does not run hot . It starts and idles fine. The check engine light is on but i have not read the codes yet and can't do that until monday. I have read that it could be an injector that is stuck open but do not know how to check for that. I am a vintage car mechanic and engineer but I know zero about newer computer vehicles and very little about diesels.
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95 manual trans Subaru Legacy (lack of power), Everyday at least once my car will cut off when I come to a stop. Also, at least once a day it seems like there is no gas pressure. What I mean is I will just be driving along and no gas is getting to where it needs to be. I can pump the gas pedal and the gas engages again. There seems to be no rhyme or reason. It doesn't matter what the lay of the land is. I will say it has occured an increased number of times over the past 2 very warm days. It could be it's just getting worse.
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I have a 07 Camry LE. I recently replaced the belt tensioner and belt. A couple, maybe three weeks later its having symptoms of hesitation when accelerating and when at a stop. The rpm's are stable but seem to dip below its operating specification, causing the car to come to a wobble felt just like when you're in too low a gear when driving a standard vehicle. I suspect it may be air related but that's just a guess. I have not looked under the hood yet since its dark out and would like to get some feedback on this problem. Another probable cause I suspect is the fuel filter. The car has 113,000 miles and i doubt its ever been changed (I am the second owner).
Before I changed the tensioner I could be a stop and then suddenly press the accelerator to avoid oncoming traffic. The car will stall and die sometimes. It's has only done this to me on two occasions. Both at the same location. Rapid acceleration at this point was on an incline. If it matters.
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