Lexus GX 2004-09 :: Vibration Around 30mph When Simply Accelerate
Dec 2, 2014
I have GX470 2009, now a little over 80000mileage. The car has been serviced by Dealer all the time. Recently, it has been served brakes, rotors, and new tires, cost a lot of money because no warranty. After the last service, I feel car has vibration around 30mph, not steering, no noise, it is gone when I release gas or just simply accelerate. It is very smooth and steadily at the high speed. I called the dealer and was told there might be driveshaft problem. I did find one side rube boot has a little very dark grease leaking (actually not leaking). Just use my finger to remove a little around the end of boot.
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I recently bought a 06 GX470 w/ 70k miles and noticed vibrations/sputtering when i accelerate during a turn. For example when you back out of a parking space, turn your wheels all the way and go. It happens when i turn right and left.
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Over the last two weeks I've had a couple instances where I'm moving around 30mph and I gently accelerate, you can tell that the engine/transmission is about to downshift and while pushing the accelerator just slightly you can feel the car shutter (not terribly noticeable) not accelerate as well as a noticeable amount of blue smoke will come out of the exhaust. It's happened twice now. After a few seconds the car will return to normal and the smoke stops.
Camry is a 2012 SE, 4cylinder, 31,000 miles. It's had the torque converter software update. No lights on the dash. I've also stopped after this happened and the engine sounded normal, oil level is normal.
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I have a 99 F250 5.4l 4x4 Super Duty that just all of a sudden stopped going over 30mph. I was traveling down the highway at 70mph and all of a sudden the truck acted as if it were in neutral and started revving up. i let off the gas and the problem stopped. i went to pass someone and it occurred again. I slowed down to 65mph and a couple minutes later it did it again. I wasn't too far from home so i drove it there. By the time i got around the corner I had the truck in second gear to prevent me from going over 25mph. i allowed the truck to rest and then checked the transmission fluid and everything looked good. There was a slight squeak that had just started and appeared to be coming from the drive shaft. I am mechanically inclined but new to working on vehicles..
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I have a 2004 Dodge Ram 1500, 5 speed manual with 110k miles. This past winter, the truck has started to whine when it's in reverse. The strange thing is that it also whines when it's in neutral and simply rolling backwards. It's intermittent, which is why I've been hesitant to take it to a shop to have them waste a bunch of time with it and say they can't reproduce it. Things that make it more likely to occur -- the truck being cold (IE: shortly after a start), air temperature being cold, when it's in 4WD. When I brake, it stops immediately. If I have the clutch on the floor or the transmission in neutral, it will keep doing it, as long as it's rolling backwards. This never happens in any forward gear, and it's been happening intermittently for a few months now. I had the transmission fluid changed this past fall, sometime before I noticed it started happening.
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I have a new to me 2005 F150 SuperCab Lariat 4x4 with 155,000 miles on it. About a week ago I replaced the from passenger hub assembly and half shaft (torn boot). When doing that, I noticed that the IWE actuator was not working right (would not compress evenly). When taking that off, there was a bunch of rust that came out of the vacuum line ports. It started moving freely after cleaning all of that out that I could (I will be replacing it soon). I assembled everything back together and all seemed OK mechanically.
I also scanned the truck and saw the code for a bad IWE solenoid so that is being replaced tonight. I also have not checked the drivers side yet.
So...now that I have done all of that, the truck started occasionally bucking/shuddering when I slow down from highway speed to about 30mph and lightly accelerate again. It does not do it every time though. There is no grinding/whining noises either. Could this be caused by the IWE system somehow? Maybe slowing losing vacuum and having one engage and the other disengaged?
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From time to time, and always unpredictably, the transmission acts up. When starting from a stop the car will not accelerate normally, putting me in jeopardy. Also, shifting automatically is a problem.
I tried shifting through the gears and got mixed and unacceptable shifting. Depressing the accelerator only increases the RPM, the speed hardly at all.
Is this a problem in the transmission or in some electrical control of the transmission?
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I have 3 sound bytes/videos. Probably best to listen with headphones or decent speakers to get the full effect. The issue has gotten worse. Seems to be worse especially in the a.m. when cold.
When I accelerate fairly quickly, not wide open, there is a weird noise of whooshing air, his or escaping air etc. It could be described as some type of whirring noise too.
I can let off the throttle and push slowly into it and it goes again. Only happens under a decent amount of engine load. Doesn't seem to matter what gear as long as it is under the same type of engine load.
It is coming from the passenger side engine bay as far as I can tell since I'm driving.
Here are the links: YouTube ....
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So, my wife tells me that the interior lights have been flashing on. When she accelerates from a stop that blink on for a second. I figure she has not shut a door well but it appears that she has. I have not had a chance to check the doors.
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Few weeks ago I bought my first Lexus, an '07 GX 470. It has roughly 75,000 miles on it, 2 previous owners before me. Anyway, I hear a noise sometimes which either sounds like a slight belt slip or fuel being pumped into the injectors when I give it a good amount of gas and the engine downshifts to accelerate. I had the dealer replace the drive belt(serpentine belt) because of 2 reasons, it needed to be replaced and I thought that could be the problem(I did not have to pay for it since I have had some problems with the Lexus dealership I bought it from, they did it as a "goodwill" gesture, that's a story for another thread) and inspect the tensioner and pulleys, they said the pulleys and tensioner were in good working order.
I drove the GX home tonight after said replacement, and I still noticed the same noise. The best I can describe it is like I said above, a slight belt slipping noise or it could also be described I guess as fuel being injected under acceleration as soon as the trans downshifts to accelerate. I am just curious if this is normal for this engine or do I have a possible problem? It's covered under the Lexus used car warranty for another 5 months so if there is something wrong, obviously I would like it fixed under warranty if something is wrong. One thing I should probably mention is, the noise is semi quiet and I guess the average person might not even notice it.
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I have a 2006 rx330 which vibrates bad between 40-60. I had a my drive shaft balanced and new joints installed but still shakes. I have bridgestone dueler alenza tires with 5k on them, had them all rebalanced. Still shakes. I have 205k on her.
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My wife and I purchased a 2008 GX with 60K miles. The day we left the dealer we noticed a vibration at 70-80. We were recommended two tires which we had installed that day but that did not fix the problem. Those were Bridgestone tires. When I took it back in they told me that they were the Toyota version not Lexus and recommended I purchase two more but suggested I switch to Cooper as they said they were better tires.
I took the vehicle in to my friendly local Lexus dealer and informed them of the problem. They kept it for a couple days, performed a bulletin with the drive shaft. The vibration was still present so they said that one of the new tires had a sidewall stiffness of 37, which signifies a bad tire. They stated they went over the vehicle and they could not find any issue except for the tires.
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Vibration when your GX is at idle? Yes or no....
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I have a vibration in my steering wheel between 65-70 MPH. I had my wheels speed balanced with no remedy. Is this connected to the TSB for the "clunk fix"? Or could I have a bad belt in a tire? I figured if it was a bad belt than they would not be able to balance my wheels. I did recently get rear ended mildly, but there was only a scratch on my bumper- The trailer hitch took most of the impact.
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I recently got the timing belt along with water pump replaced. While they were in there, they changed the spark plugs and intake gaskets. I also had a leak in the radiator so that needed to be replaced. The car has 97K and is a 2008 400h. Local ex-BMW mechanic shop did the work. I supplied all the parts, and he only charged me for labor.
Car runs super smooth now with the replaced plugs and we have been euphoric with the maintenance to date until very recently.
So 1500 or so miles since this major service. My wife and I have been noticing that under load typically on an incline/hill there is some noise coming from the engine. I heard it again the other day and were only noticeable at low speeds between 10-35 MPH and low RPM. (I couldn't tell you exactly the RPM's as its not provided in the instrument cluster.) It seems like the engine is struggling a bit and is rattling at the top near the back of the engine bay/ fire wall area. Maybe its the intake manifold housing? Its hard to reproduce too. Once I give it some gas it goes away. It only seems to happen once on every trip and only on hills/grades at low speed.
Going from being an even quieter and smoother running vehicle after the service to this is making me a little concerned.
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Not sure if this is normal. Only noticed it recently but my HI-LO gear lever vibrates. The faster I go the worse it gets. Why?
I spoke to a friend who's a mechanic. He reckons everything's fine. We just put some new grease into the transmission, etc.
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So I've read a lot of the threads, especially the write-up by alchemist in reference to a vibration and what to replace. Through a round about way, in the last few weeks I've replaced:
-both CV axles
-font lower control arms with bushings and ball joints
-all 4 struts (KYB) and mounts
-Tires, Michelin Premier A/S road force balanced and vehicle aligned
Brakes/rotors were done about 20k miles ago as well.
Car really rides nice now, but when I get it on the highway, around 75mph I start picking up a slight vibration through the steering wheel. I can also feel it in the car to some extent before 75. It is very consistent, always there regardless of road conditions or day I drive it.
What else this could be. It is driving me nuts and I've spent a lot of time and money to this point with no resolution. The last thing I can think of is possibly the steering rack and tie rods (mine is seeping a bit, 120k on the car, but I check the fluid level regularly and have not added any fluid in 20k miles)
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I have a 2006 VW Passat 2.0T with around 60,600 miles on it. Recently I had the CV axles replaced. Since then the front end vibrates whenever I accelerate. I took it to back to the mechanic and he said the engine mounts needed replaced. I am very skeptical of this diagnosis but am now stumped. (Also I had the tires balanced and rotated after the axles where replaced and the vibration is still there).
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So I took my R into the dealership to have them look into the rattle/vibration noise that happens when I accelerate. They say that they looked into it and found nothing that was loose and said everything was fine.
When I first got the car I was showing it off to a friend of mine, letting him hear the intoxicating exhaust note, he was impressed, then I rev it and he was like hmmm what was that? Needless to say I was a bit embarrassed.
At this point I don't like getting on the gas in fear that someone will hear this noise and I cringe when I hear it. It's unacceptable for a $30k+ car. The noise does seem to get better once the car is heated up, but that's only after quite a bit of driving and its still there, just not as bad.
I'm taking the car in again tomorrow for something unrelated and I'm going to make sure I give it a few revs so they can hear what I'm hearing.
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02 camry 2.4 I4 LE ... before, around 100K miles ... engine light on cause by Catalytic Converter issue, used magic way in this forum,the engine light has been solved successfully.
right now, 175k miles
problem:
1. engine light always keep flashing when driving.
2. low idle speed <500 at any gear except "Parking".
3. gear "D" at stop, start, reverse, accelerate around 50 mph, whole dashboard was vibrated
action made:
1. "dogbone" motor mount was broken and has replace brand new.
2. throttle body cleaning has done.
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I have noticed that the passenger seat has a vibration that can not be felt anywhere else in the truck. You can actually see/feel it from the drivers seat when no one is sitting in it. However, you can not feel this vibration through the steering wheel, gas peddle, door panels, etc. It increases with speed with is present at low and high speeds. My thought is that perhaps the seat is loose? When sitting in it it feels like the back right wheel is out of balance but I know it isn't (recent road force balance and feeling in all other seats confirms this). Could it be I just need to tighten the seat/tracks?
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