As I have experienced hesitation on acceleration from a stop, I found a TSB # L-SB-0154-10, that addresses this condition for the 2010 SC430. It was issued in 12/1/2010. I am not sure if it would apply to any other years. The TSB entails re-flashing he PCM with updated software.
View 8 RepliesMy dad recently bought a 2011... He says now there is a hesitation on acceleration?? Don't know if it was always like that or not he's owned the used car only a few months.
View 14 RepliesI just purchased an l/certified 2013 RX 350 (34K miles) this past weekend. I did not notice these issues on my test drive. I've started to notice that when taking my foot off the gas pedal (while not resting near the break pedal) the vehicle goes through a series of easy coasts and then some resistance (as if using an engine as break on a truck with a manual t,) then returning to a smooth easy coast.
I've also noticed that when accelerating at a slow speed from stop (I'm in traffic) there is a bit of a hesitation, like turbo lag, yet this has no turbo. The lag seems to be there even if I want to accelerate aggressively.
I hate to get tied up with a dealer service department already.... "Cant duplicate," or "that is normal operation," or "Computer codes check out." Looking for reinforcing information so I don't have to take it in once a month for an unknown amount of time.
Of our three other cars (2015 Prius, 2002 Nissan Altima, and (pre-tran fail) 2002 honda odyssey) none experience anything like this.
Our household is dumping a 2002 honda odyssey for repeated transmission failures never covered with goodwill. All service was at a h dealership and manufacturer schedule was followed. I'm already sensitive to the manufacturer/dealer relationship.
My 2001.5 1.8T wagon w/ tip (stock engine, no mods) has always had an amazingly long "dead time" when I gas it hard from a standing stop. It's less noticeable when I'm in manual mode, but is downright scary in automatic mode in that I wonder if the car is ever gonna take off. When it does take off, it accelerates just fine and goes through the gears without a problem.
If I'm in automatic mode, no significant hesitation occurs if I first give it a little gas just to get going. The situation arises only when starting from a dead stop. I've read elsewhere (not here) that this model does hesitate on initial acceleration, but it seems more pronounced than in other b5's I've had as dealer loaners. Any way to cut down on or eliminate this?
The problem starts after about 5-10 mins of start up and normal driving. First signs usually come leaving a stop light or stop sign. Hesitation, jerkiness, rough acceleration. It's usually slight, just enough to feel it. Soon it really shows up while keeping the truck at a steady speed, say 40 for example.
I finally heard what I would describe as a puffing air sound and figured vacuum leak.. finally! Nope.. it's coming from the rear underneath of the vehicle. I can't hear it in the engine, or the tail pipe.
2002 Ford Explorer xls 4.0 125k miles, I've replaced the air filter, egr valve, pcv valve, cleaned the maf and covered about every hose I can reach with carb cleaner checking for a vacuum leak. I've yet to try some of the other things due to hearing that puffing sound.
When I take off from a start it will intermittently stumble or hesitate, seems to be around 1500 rpm. have also noted it at higher speed while cruising. its more like a momentary power cut than a miss fire.
So far I have done the following
new fuel filters
clean MAF
new PCV valve
new spark plugs
check all hoses and plugs etc
injector clean
checked techstream for codes. there is one for a heated O2 sensor but dont think thats it.
2002. SC430
Looking at an RC for the first time and don't know a thing. I saw one comment "about drive by wire". Is there hesitation on acceleration from a start on these cars?
View 13 RepliesI got 2002 SC430 with 59,000 Miles, all of the sudden my car doesn't have any acceleration at all. When I press gas paddle it doesn't do anything, but engine stay on. I couldn't get any error codes since I changed batteries to make sure if it wasn't the battery..
View 4 RepliesIt was the fuel. I had been experiencing a hesitation when going from a cruising speed...to WOT (wide open throttle) situations. The car would kind of just hang there for a couple of seconds, not really going anywhere. This situation was a bit - I wouldn't call it scary - but I would call it something I needed to be concerned/mindful of when pulling into traffic or switching lanes on a highway, etc....it made you have to take into account how much more space you'd need to do such a maneuver.
Well the problem is gone, it was the fuel. And it was my own fault. I was buying Super one week, then supplementing mid grade the next...mixing the two and lowering the octane level. Plus I was buying the gas at a station that was cheap. My logic was that I drive 600 miles a week...I'm trying to save a few bucks, etc...the guy I bought the car off of said he was doing the same thing with the fuel (and he's a Lexus tech)...and for the most part I didn't notice much of anything in loss of fuel mileage, etc.
The hesitation wasn't something that really bothered me because I usually don't find myself in situations where I have to mash the gas pedal into the floor, but I did want to know why the car was acting like that. After reading through a bunch of threads I came upon one post that said most of the time it's the fuel, but there is a reprogramming procedure as well. For me it was the fuel. I know others have solved an entirely different problem with the quality of their oil (TGMO).
So if you're going with a lesser grade of fuel...yes your miles per gallon won't really change...and no you won't be able to tell much of a difference...but don't be surprised if your car doesn't want to move in hard acceleration situations for a spell (I imagine it's the knock sensors kicking in).
Over the last few months I was having a problem with my 2002 SC430 with 130,000 miles having random hiccups and engine hitches during acceleration and even at random times while on the highway or around town. My average 10 minute trip around town would have at least 10 hiccups, all random and during no specific style of driving. No one wants a stuttering engine!
After reading some of the threads here there were several options...
1. Do a system reset by using only the key turned on and pressing on the gas pedal for thirty seconds. While optimistic, this didn't solve the problem...
2. Many threads suggested that it may be my TPS (throttle position sensor) so I started shopping around for a sensor to install myself. They run for about $75 online and are a pretty easy install..but I wanted an official opinion so I went into my local lexus dealership to ask them if this was the best course of action...
The solution: Apparently, the 430 engine is a notorious carbon producing engine so, as my local lexus mechanic explained, this carbon can build up in the throttle body, affecting how the mass air flow sensor (MAFS) is read. My mechanic recommended having a FUEL INJECTION SERVICE. This service cleans the fuel deposits in fuel injectors and carbon build-up in cylinder heads and in the throttle body plating.
I have noticed an oil burning smell when i come to a stop. Its been getting worse. I just replaced my valve cover gaskets. With new spark plugs also. Any way after I completed the job, I let the car run for a few minutes and seemed like i could still smell the burning smell. May be its just because it all needs to burn off the heat shields, but I thought I saw some oil accumulating on the bottom side of the v.v.t solenoid on the front of the valve cover. Is that a separate cover? Doesn't seem to be a gasket there. Do these v.v.t covers leak a lot?
View 2 RepliesOur 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.
View 8 RepliesAfter replacing several front end suspension parts I noticed an issue with the brakes. The car stops fine and in a straight line but right before the car comes to a complete stop the brake pedal drops about 1/2inch and if I am not holding the wheel, I see it move to the right ever so slightly. It does it every time and I am thinking that a component was either damaged or is not installed correctly.
View 8 RepliesDead battery. After recharging it, the car starts but.......
1. the seat memory buttons stop working
2. the radio that hasn't worked in 8 months since i own the car is working
when the radio wasn't working, i tried to put in new fuses and that didn't work. but a dead battery did.
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.
I have recently had my motor mounts and transmission mount replaced.
Before the replacement, the car would shake quite noticeably when the engine was being started (maybe even shake 'violently'). I thought this was normal until I had my motor mounts and transmission mount replaced. Now when I start the engine the SC430 doesn't shake at all. The difference is profound.
Just a head's up. I'm not sure what the implications are of running with bad motor mounts for a long time, but I decided to get it done because my car would shake when idle and at stop lights.
I have a 2002 sc430 with 120000 miles, great car no problems just maintenance. For the last couple of days I heard a chirping sound as I slowed down to a stop. The only thing I could think was the brakes, but I just changed the front and rear pads March 2011. So today I looked at the front brakes and saw the pads at about 50% and everything else looked good. Then went to the rear and saw something I thought was odd...take a look at the picture.... The last time I changed the pads I don't recall having this problem. See the red arrow, one of the pads is worn almost completely down and the circle shows a lip on both pads??? I checked the caliper pistons and they work fine, the pin that hold the pads is not bent and the clips are fine.
View 4 RepliesWhen I come to either a hard stop or apply my brakes hard while on the highway I can feel a slight shift of the seat forward (as if it is tilting forward) and then when I accelerate again I feel it rock back into place. I only weigh about 150lbs so I doubt it has to do with that. It's minimal and I think it started at around 50K miles (so, just a couple thousand miles ago).
View 7 RepliesI have a 2010 with about 166k miles. I am getting a slight hesitation at slight acceleration or constant speed. It does not matter if it's on highway or freeway speeds. Now I am not sure if this in junction with me changing the PCV valve, cleaning the EGR pipe, or cleaning the TB for carbon recently. It started happening a week after it though.
View 19 RepliesPreviously, I would sometimes experience sluggishness and hesitation when attempting to accelerate. Now, the problem has become worse. Also, previously the issue occurred when I suddenly needed to accelerate to pass another vehicle. Now, I can feel it from take off, you really hear the engine struggling(the kind of sound you hear on an old 4 cylinder vehicle trying to go uphill). Sometimes, I feel the engine is struggling to keep the vehicle at a constant speed on a level road. Tried fuel injector cleaners like BG44K. While these injector cleaners are in the gas tank, the car runs smooth and has decent acceleration. Later, I return back to square one.
It is not that I have high expectations and am a power freak. I used to own a 2004 RX330 with 150K miles and that car ran better at 150K without any tune up then my GX460 with 60K miles. So, you can imagine my frustrations.
One more thing I noticed, it runs better when I just gas it up. One theory, could be the fuel filter is clogged. When I am suppose to change the fuel filter on the GX460?
Just this past weekend my wife got her 2010 Golf Highline with the 6-speed tiptronic transmission. Just a quick question about the gas pedal. when it is on "D" it really feels heavy and sluggish when going from full stop to acceleration. the pedal feels so hard and when you step on it feels like its not going at all. but as soon as it goes on 3rd everything seems ok. and then we tried putting it into "S" (sports) mode and everything was really good and quick. but when on this mode you need to be really hard on the gas pedal for it to run smooth. so i guess my question is...is it really like that when driving in the "D" mode??
View 6 Replies