- #216 of 768
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Re: Update regarding droning noise [johan1]
by ihammer
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Aug 23, 2006 (9:02 pm)
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Replying to: johan1 (Aug 23, 2006 8:35 pm)
Thanks for asking. Unfortunately Toyota's first attempt at a fix did not work. They replaced the fuel pump yesterday and when I got the car back over 8 hours later they said they were sorry, but that the noise was still there. It was even louder than before. They told me that Toyota was probably going to have them replace the fuel tank next to see if that worked, but that they would call me back today to let me know. When the service writer called me today he said that Toyota had instead decided that the next thing they would try would be to replace the fuel tube assembly, which includes the fuel pump housing, a/some screens, a switching valve and a pump regulator. They ordered the part, but it may take some time to get it since it is on back order. So I am stuck with the droning noise and I have no idea how long I will have to wait for the next "fix". Very discouraging! I will keep posting updates as the process moves along.
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- #217 of 768
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Re: Update regarding droning noise [ihammer]
by johan1
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Aug 23, 2006 (10:35 pm)
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Replying to: ihammer (Aug 23, 2006 9:02 pm)
Thank you for the quick response. Hope the replacement of the whole tube assembly cures the noise.
I somehow feel it is temperature related. It happens always when the car is hot. 
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- #218 of 768
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Re: Update regarding droning noise [ihammer]
by ofelia
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Aug 24, 2006 (3:54 pm)
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Replying to: ihammer (Aug 23, 2006 9:02 pm)
I hope that fixes everything, when I posted a few months ago, I mentioned they replaced the fuel tank and pump. Unfortunately, a few weeks ago, I hear some sounds again. It dissapears and doesn't stay that long and comes from the back of the vehicle. I think I'm getting tired of the problem that I mask the sound with my radio...hope it works for you since they are replacing the whole fuel tube assembly.
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- #219 of 768
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Re: Update regarding droning noise
by ihammer
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Aug 24, 2006 (9:50 pm)
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Thanks for your response. I will keep you posted, but it may be awhile before I have anymore news since the dealer said the part is back ordered. Sorry to hear you still have the droning sound. I'm glad they didn't bother to replace my whole gas tank since that didn't seem to work for your vehicle.
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- #220 of 768
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Re: Update regarding droning noise [johan1]
by ihammer
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Aug 24, 2006 (9:59 pm)
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Replying to: johan1 (Aug 23, 2006 10:35 pm)
You're welcome. You know, I think you have a point about it always happening when the car is hot. I have been keeping a diary complete with dates and times and a pattern has developed which does indeed indicate that it is heat related. For example, when I first turn the car on in the morning to drive to work the droning noise never comes on, but after I have been driving for awhile it comes on (when the car is hot). If I make a stop at the store or wherever after having driven for awhile (again, the car is hot) and then get back in the car to head home the droning noise comes on as soon as I start the car. Anyhow I will keep you posted as to the result of replacing the tube assembly though that may not happen for awhile since the part is back ordered.
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- #221 of 768
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Re: Update regarding droning noise [ihammer]
by xtek3
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Aug 25, 2006 (3:15 am)
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Replying to: ihammer (Aug 24, 2006 9:59 pm)
Sorry to hear about your ongoing dilemma. I too face a similar situation. The droning sound occurs around 55-60 mph and lasts approx. 2-5 sec's with a frequency about every 30 sec. Brought it to the dealer's (wife did that is) and thy took it out for 5 min's and could not duplicate sound-this happens to me each time I drive it!! So I feel this is going to be a pain in the arsk to troubleshoot and resolve. Pls keep the post going.
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- #222 of 768
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Re: Update regarding droning noise [xtek3]
by ihammer
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Aug 25, 2006 (10:04 pm)
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Replying to: xtek3 (Aug 25, 2006 3:15 am)
I'm really sorry to hear that yet another of us 2006 RAV4 owners is experiencing the droning noise problem. It's interesting that you mention that it happens in your vehicle at around 55-60 mph. Johan, in another earlier post said he thinks it's a temperature related issue. Mine usually happens after I've been driving for awhile at freeway speeds (so of course the car is hot by that point) and it also does it while the car is stopped, but still running, ie at a stop light or in a parking lot and always after it's been driven for awhile. The droning sound also happens to me each time I drive the car. Mine is a 6cyl and I'm not sure whether others with the problem have 4 or 6 cyls. It is a blast to drive - great acceleration and handles very well, but I can't live with this noise if Toyota isn't able to fix it. I was discouraged to hear that another forum participant, Ofelia, had her entire fuel tank and fuel pump replaced and that that did not resolve the issue. Maybe the next fix they try on my car will take care of it - I'm keeping my fingers crossed, but have little faith at this point. I will definitely keep the post going because maybe if they solve it with my car they can fix all of the others without putting you all through so many hoops.
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- #223 of 768
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Re: Update regarding droning noise [ihammer]
by wwest
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Aug 26, 2006 (7:03 am)
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Replying to: ihammer (Aug 25, 2006 10:04 pm)
Time related or temperature...?
Cabin temperature and therefore time.....
For improved FE (again!) some of the latest Toyota/Lexus models are now using a variable displacement A/C refrigerant compressor. I wonder if that is what some of you are hearing, calling a droning noise.
The system uses a swash plate technique to vary the displacement. Unlike older models wherein the compressor clutch was either engaged or not, the new compressor's clutch will remain engaged at all times the A/C is enabled. Its "internals" will be adjusted to pump a lower level of refrigerant, probably especially noticeable once the cabin has cooled to or near your setpoint, manual or automatic system.
The noise of that slow pumping displacement, in combination with a relatively fast/high engine RPM would likely be a very noticeable anomaly for those of us having long ago adjusted/adapted to the noise of the old on/off compressor.
Next time you hear the droning reach over and turn off the A/C and see if it doesn't stop.
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- #224 of 768
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Re: Update regarding droning noise [wwest]
by johan1
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Aug 26, 2006 (8:36 pm)
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Replying to: wwest (Aug 26, 2006 7:03 am)
I thought of the droning noise might be related to AC before and thus tried by turning off the AC. You know what, the noise was still there. The new AC technique you mentioned put me to think that might be the reason why the AC is so weak. As earlier posted, I had to turn it on at level three or to the maximum (level 4) when the weather is hot. For this, I also thought of the insulation material for this new rav4 is not good enough considering its sale price.
I didn't notice the noise when the speed is over 50mph though. Like ihammer mentioned, I notice it only when the car was driven earlier. It never happens when I start it early morning going to work.
BTW, my car is V6 sport 2wd. I do enjoy it other than that.
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- #225 of 768
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An easy fix to strange wind noise
by mbutton
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Aug 27, 2006 (9:08 am)
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My husband and I were driving on the highway recently and we noticed when slowing down on the off ramp, there was a very strange noise coming from the back of the vehicle. After troubleshooting a bit, we realized the bars on the roof racks had become loose and since we were driving with our moonroof completely open, it was causing some major vibrations of the loose racks. My husband tightened up the racks and the problem was solved. I thought I would pass this along in case anyone else was experiencing something similar. We thought it was a serious problem and were very relived to find it was a quick fix!
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