Lexus RX 2004-09 :: Engine Vibration / Noise At Low RPM
Feb 8, 2016
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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For the past month or so, my RX has been making this weird vibration and noise from the under body near the engine (maybe transfer case?) It is usually when it's cold and at low speed. But sometimes it does it even when the engine's warmed up for couple minutes.
I did change the transfer case fluid and rear differential about 3 months ago. Not sure if this is related.
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In 2010 i purchased a 2005 Lexus GX470 w/ 52k miles. It had 2 previous owners and you could tell it had been garage keep and most likely not their weekday car because low miles and 3rd row was in mint condition. Up until late last year the car has been great. I use it to tow my boat and the only thing besides regular oil/filters and its 60k checkup was to replace the drive shaft for the TSB/clunk noise on stopping.
I am currently having two issues that have been becoming worse.
1st is the knocking or tapping noise in the engine compartment. Below is a link to the video. This was after driving for approx 15 minutes. It doesn't do it 10/10 times, but is probably happening 1/2 the time now when i drive it. Oil is 10W30 Full Synthetic by MobileOne and just replaced today to see if that changed anything. I purchased 2 replacement knock sensors a few weeks back but haven't had the time to break it down to swap them out. Figured since the belt needs to be done at 90k and my car is 10yrs old I might as well replace the timing belts at the same time. When the AC is on or car is in drive it doesn't knock strangely enough. In the video you can hear the AC click on/off and knock when its off. I'm hoping this isn't a bad engine or rod or something... Thoughts?
2nd is the steering vibration. I noticed there is a TSB on that for replacing the steering column and other parts and assume I should do thing soon as well. Depending on the payment or temperature it will do this at times around 60ish MPH. Again, its not consistent, but is very noticeably while driving when it is. Tires have approx 40% tread remaining and only the driver side tire seems slightly more worn on the inside than the outside.
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My '05 Lexus RX330 has developed a vibration and rattling noise, that I believe comes from the exhaust system. Looking for info on trouble shooting or quick repair?
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I recently hit 180,000 km on my mileage and all of the sudden theres increased ticking engine noise and vibration. Sounds like a diesel engine. No check engine lights, gas mileage is the same, acceleration is the same and as far as I can tell after checking oil its within normal range for now.
I'm worried its either the VVTi Rubber hose exploded or its the VVTI Camshaft / piston slap issue. My dilemna is I'm 3 hours drive away from a Lexus dealer but there is a Toyota Dealer 10 min away. Should I bring it in to verify theres no oil leak at Toyota and then take it back to a Lexus mechanic to see if it is Camshaft gear ?
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I have a 2004 GX470; bought it new. The last few months I have been hearing a strange noise from the driver's side; seems to be coming from under the floorboard and can sometimes feel a vibration in the brake pedal. The noise is similar to a cat meowing. Have a son who is a GM tech; he said it sounds more electrical than mechanical. It happens mostly when I drive it cold. Seems to also happen more when turning/braking. I had the main belt replaced this summer. Should I have the tension pully replaced?
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I own a 2004 Hyundai Sonata (2004 Base model L4 - 2.4L 2351cc - MFI GAS DOHC) which is a 4 cylinder and has about 113000 miles. Anyways, about a month ago we had one of our coldest days of the year. I drove the car to work and everything was fine. Then when I left work (it was freezing cold) I went to start the car and it sounded like I started a race car. It was so loud that I thought the car was going to blow up (no check engine light came on). I changed the oil and that didn't work and so I figured it was something with the exhaust.
Then I took it to my mechanic (applause). He said that he was stumped, the car was noisy but he didn't think it was a problem but he said he would try to figure it out. He ended up taking off the timing belt and said that was fine, he said the water pump was good as well. He had a service tech look at it with him and they thought the issue might be the "vibration dampener" or "damper" So they replaced that but it didn't work. He said it could possibly be the motor mounts but he said when he looked at them they looked okay?
I drove it off his lot yesterday and it is quiet when I idle but I can see the steering wheel shaking significantly. Then when I hit the gas it is still obnoxiously loud and with heavy vibration! But when going down a hill and letting off the gas there is a brief respite of silence (still vibration). It is especially louder in lower rpms and sometimes I think I can hear a metallic clanking/scraping noise when I have the times of "silence" but it is very faint.
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It all started after I refueled at Mobil after a rainstorm a month ago. Could be coincidence, but right after that the car started jerking wildly and making a howling wind noise from the front. Thought it was the transmission. Brought to Lexus dealership, they told me nothing was wrong as I had low mileage on the car. There are NO Check Engine lights on the dashboard. Car "quieted down" after that, but the noise remains EXCEPT at high speed when it's quiet.
In addition to that, the jerking / misfiring continues at stops, reversing, and slower speeds on occasion only.
I tried Techron FI cleaner, but it has not made a difference. Filled up several times since then.
What's wrong?
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My wife has an 07 GX470. Two days ago she came home and mentioned there was a whirring noise from the engine. I started the car, lifted the hood and heard the noise. Sounded like it was being generated by the serpentine belt. Meaning, something that the belt was "driving" was making the noise. She drove it again yesterday morning for a 10 mile trip to drop off son at camp. When she came back, she indicated that it smelled. Just walking out the door to the garage I was hit in the face by a very strong electrical smell. No fire, but smelled very bad. Car has been sitting since yesterday morning and she just now tried to start it and the car is dead. no power to anything. Battery is new 3 months ago.
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My 06 with 99k miles just developed a whine from engine maybe trans? It whines with the rpms in neutral also.
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Having bought my 06 GX 470 only a few months ago, we're encountering 90-degree-plus days for the first time. There is an unusually loud noise from the engine that I'm almost sure is cooling fan noise. It occurs after running in the heat of the day. It's not mechanical noise, but a loud roar like that of a large truck engine. Is this typical for these models in the heat?
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I just hit 100k and I will be taking my 06' in for timing belt soon. I just noticed a weird winding up sound from the engine during idle and lower rpm, I can't hear it with the engine running on the road, except for slower speeds. Is that being a belt or tensioner or something? Also, I have heard a faint clicking sound at idle when I am in a drive through and the sound bounces off of the brick walls next to me. It's not a ticking exhaust leak, more of a click, is that a water pump?
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How to diagnose the engine issue I am having. The gx currently has 96k miles and I am planning on doing a timing belt and water pump replacement as I plan on keeping it as long as possible.
One new issue that crept up is that when going down the hill the car engine sounds like it's actually accelerating and the RPM drops to as if it was idling.
Normally when going down the hill it usually stays around 1 or 2 on the rpm, it's noticeably different and just started happening recently. What might be the cause of this?
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06 GX470 muffler exhaling white smoke for a while, now the smoke disappeared, however, a new hissing engine noise is evident. The noise increases with the revolutions of the engine and it never stops.
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Lexus 3.3L RX-330 Engine Noise - Part 3 - YouTube
I am concerned with an engine noise.
5 months ago we bought a 2005 Lexus RX-330. It had 109k miles on it (now has 113k). There is a faint but noticeable engine tap/ knock/ tick coming from the engine. I think it has the 3.3l, 3gr-fe engine.
I have listed some observations:
The sound does not occur on startup, when the car is completely cold.
The sound starts after 5-10 minutes of driving or idling.
The sound diminishes and is almost imperceptible after another 10 minutes of driving.
The sound is only noticeable at idle.
The sound/tap seems to occur about 5 times a second at 600 rpm (idle)
The sound increases frequency with rising of rpm.
At approximately 2k rpm the sound cannot be heard.
If the vehicle is stopped after driving, allowed to sit for 5-10 minutes and then restarted, the sound will be loudest even though the engine is still hot.
The engine is quiet overall with exception of this sound. The fuel injector sound is the next loudest sound.
The sound doesn't seem to have gotten louder in the last 5 months but it may have gotten just slightly louder by my estimation.
I can hear the sound inside the vehicle and outside as well.
No other symptoms are present. I had the timing belt, water pump, idler and tensioner replaced as maintenance and as a possible solution to this problem right after buying the vehicle.
The mechanic heard the sound but told me he wasn't sure of the cause. He and I agree that it sounds like an internal engine noise. It is not a pulley, idler or exhaust sound. The mechanic told me not to worry about it and it was a normal sound. He also said to start troubleshooting would get expensive. I am still concerned.
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I just purchased an 07 RX 350 with a salvage title. I'm going to fix it up and drive it but I'm trying to figure out why it won't start. It was hit in the front driver side corner, bent the radiator support and crushed the bumper and head light, but that is about the extent of the damage. I tried charging the battery and I get power inside and the other headlight seems very bright, but when I try to turn it over, I can hear what I think is the fuel pump engage but the engine doesn't turn over and there is no noise from the starter. Is there a sensor or something that would be stopping 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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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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My dashboard makes a vibration noise sometimes when going over bumps at low speeds in my 2013 LS f sport.
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