Last post on Jan 03, 2013 at 8:02 AM
You are in the Toyota Sienna
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Toyota Sienna, Van
#36 of 79 Re: Road noise and rattles [siennami]
Aug 10, 2008 (5:34 pm)
Thanks so much for responding. The vehicle was a 2005 sienna limited fwd. Initially it sounded as if the rattling was coming from the passenger side rear, and I immediately thought that it may be the jack in the rear compartment, but I also heard it up front on the passenger side. I believe your right about the care of the previous owner because when I test drove 2005 same model it was DRAMATICALLY DIFFERENT. The noise was there but it certainly wasn't as pronounced. I plan to continue my search which can be very frustrating at times. I just want to be comfortable with the purchase. Thanks again.
#37 of 79 Re: 2007 sienna - loud hum noise when accelerating [anusha]
Jul 25, 2009 (8:38 pm)
Just read about your problem regarding the load humm noise from your Sienna. I have a 2000 sienna which just started making a noise that occurs around 2200 rpm, and reminds me of a leaking compressed air sound. I was curious if the problem you had maybe what I am having and what resolution if any did you find. Appreciate your help.
#38 of 79 Re: 2007 sienna - loud hum noise when accelerating [skevin]
Jul 28, 2009 (11:41 am)
I drove my 05 sienna le from NJ to Florida last month. After coming back, I brought it to the oil change and tire balancing in the dealer. After that, I heard the noise coming out from the hood and I figured out the noise is under or behind the running belt. I don't know what happen yet, but will take it to the dealer.
#39 of 79 Re: 2007 sienna - loud hum noise when accelerating [skevin]
Jul 31, 2009 (6:54 am)
I too have 2000 sienna and it also started making the same " leaking compressed air sound " few days ago. I haven't taken it in yet, but am wondering how you made out ? Any help would be greatly appreciated !
#40 of 79 Re: 2007 sienna - loud hum noise when accelerating [jtoy]
Jul 31, 2009 (7:01 pm)
I will be taking it to a mechanic next Tuesday so good or bad I should know soon. When I mentioned the problem to the mechanic (he is a certified Honda Mechanic) he thought based on what I described he said it might be an engine misfire, although the OBD II does not indicate such. I should mention my van makes the noise between 2000 and 2300 rpm. I will update next week.
#41 of 79 Re: 2007 sienna - loud hum noise when accelerating [skevin]
Aug 01, 2009 (3:35 pm)
I took my van to a mechanic and he determined that it was a loose heat shield by the cat converter. A simple gear clamp wrapped around it and tightened fixed the problem. To find out if it's the same problem, tap your rear exhaust tip with your hand (after it's cooled) and if you hear a bumping noise that's the problem. You might need someone else to tap it as you listen for it up front.
He charged me $20 bucks and I haven't heard the noise since.
Good luck with yours. Keep me updated.
#42 of 79 Re: 2007 sienna - loud hum noise when accelerating [jtoy]
Aug 05, 2009 (3:00 pm)
Just a quick update, the noise was from the shield that is near the flexible Y pipes which are up close to the engine, the shield was vibrating and causing the noise. Hope this helps, another place to look to resolve the problem.
#43 of 79 Re: 2007 sienna - loud hum noise when accelerating [jtoy]
Aug 06, 2009 (8:15 am)
Gotta love any $20 fix in this day and age.
#44 of 79 Front end noise over 10mph
Aug 15, 2009 (9:00 am)
We have a 2004 Sienna. The van shifts well, and it is not the exhaust. It sounds like a loud revving at all speeds over 10 mph. But the trans shifts fine. If we get up to speed and put it in neutral, the noise is still there. Any ideas?
#45 of 79 Re: Front end noise over 10mph [prillb]
Aug 15, 2009 (2:45 pm)
I would check out the heat shield on the cat or the heat shield by the Y pipe up near the engine(my exhaust system had this but it was an after market) If the heat shield is loose an cant be fixed, remove it but don't park in long dry grass.