Last post on Dec 04, 2013 at 8:09 PM
You are in the Toyota Sienna
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Toyota Sienna, Van
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#64 of 109 Re: Groaning [fccn75]
Feb 12, 2010 (2:45 pm)
I too have the annoying hum at 2500 rpms on my 2008 Sienna. I previously owned a 2005 with the 3.3L engine. It was a sweet car and had no such problems. I loved the 2005 so when trade in time came I went for the 2008 Sienna. What a fool I was not to test drive it first. As soon as I drove it out of the dealership I felt the difference with the 3.5L. The numbing drone appears when the gas pedal is feathered at slow speeds or when the vehicle downshifts from 5th to 4th on a long high speed incline. You feel it in the steering wheel, drivers seat, and floor under the driver. The dealer tells me I'm not the first to complain of it and when Toyota Motor Corporation was notified by myself all I got was BS. I've owned new cars and old tin cans but never had an annoying sound like this in a vehicle. This was my 5th Toyota and last because of their lack of response and help. They claim no one else has complained of the issue. Judging from what I've read on the web concerning this problem they don't care and won't be of much help unless the Center For Auto Safety gets involved. Hey Toyota, if you don't think that what happened to GM with Pontiac, Oldsmobile, and Saturn can't happen to you guys...better think again.
#65 of 109 Re: Groaning [bernie28]
Feb 12, 2010 (6:53 pm)
FWIW my 07 has no such problems. The engine made Ward's 10 Best, too, for the combination of power and efficiency. Bonus - no timing belt to change, like the old 3.3l V6.
I'll pick the 3.5l any day, twice on Sunday.
#66 of 109 Motor noise at cold engine start up
Feb 19, 2010 (5:33 am)
we have a 08 Toyota van and it seems to me to have excess motor noise at cold start up. My last toy van with 123K miles did not have this noise when i traded it in.
new van has 48K miles,
has anyone else had this problem or is it a problem.
I plan to change oil and filter and maybe add some lucas oil stablizer to motor. Hopefull this will quiten it down some. After motor is warm it run fine.
#67 of 109 Re: Motor noise at cold engine start up [maxwell10]
Feb 19, 2010 (10:27 am)
The timing chain on the 07+ Sienna is a little bit more noisy than the belt on the 06 and prior models, FWIW.
Toyota added insulation to the firewall to compensate, but outside you'll hear more noise.
#68 of 109 I hate my Toyota Sienna Limited 2008
Oct 02, 2010 (5:05 pm)
I have a Toyota Sienna Limited 2008, Is the most expensive car that I ever have... The problems star since the beginning with the stereo it just turn it off and trow the discs, the guaranty chanced for a new one, then suddenly star again and the speakers star with a strange nose, and they told me that it was electrical problem and
I needed to leave my car for a week, ok they suppose fixed and they live all the wall dirty.. Well the car is ok, I will take it... Then the car was spending to much gas and my brother just check the air filter and it was never been chance and the car used to be about 4 or 5 times for the regular service... Then one night I tried to star the car and the battery was dead and I was out of town in the night, well i have to got one, the millage at that time was like 25, 000 miles... I spoke with a service manager and they told me that I have to bring the battery.. then I decided to take care of all the services for myself with the best oils, gas etc.. My car is like 60,000 miles and the motor engine is broke because a rode went in to my engine block, and forget about the guaranty, they told me that they need to call to the fabric, you know it will take about 2,3,4 or 5 months, and they will say no, it is not under guaranty... So I was thinking to get a new sequoia and my husband told me forget it, I will never will have a Toyota again... In Mexico all the car sales do the same thing.... So never never get a Toyota Sienna...........
#70 of 109 Re: Motor noise at cold engine start up [maxwell10]
Nov 16, 2010 (1:40 pm)
I have the same problem. 08 Sienna LE with 59,000 miles. After taking into the dealership two times, they had someone from the factory come test it. Here is the response.
"Vehicle is currently operating within manufatures specifications, FTS inspected vehicle for engine noise. FTS noted engine noise on cold start-up is described as piston slap, after driving vehicle and letting it run for 20 minutes the piston slap noise was gone. Engine noise on cold start up and after warm up is normal operating condition when compared to other toyota v6 engines, noise is due to short piston skirt design, Toyota recognizes some customers may complain, however it is not considered a mechanical defect and will not affect the life of the engine. No repairs made."
Doesn't seem right to me, anybody else taken the vehicle in to get this checked? Same response and outcome?
#71 of 109 piston slap on warm-up
Nov 16, 2010 (8:31 pm)
I would suggest taking it to an independent shop for diagnosis. Piston slap should not last 20 minutes under any condition.
My 2001 with 135k on it doesn't do it, although it's an entirely different engine family, but as I said, 20 inutes is way too long for parts to warm up and expand.
And for the sake of your engine, use synthetic oil.
#72 of 109 09 Sienna engine noise
Nov 17, 2010 (3:12 pm)
We own an 09 Sienna van with just over 14k on the vehicle. When we bought it new it was hard to tell that the engine was running. Now there is a noise coming from the engine especially loud at a cold start. To me I would call it a bad lifter. Once at operating temp it quiets down but I still can pick it out. I have been around engines for almost 50 years and I have never had this with any car I owned. This is my first "rice burner". I took a hose and held one end to my ear and then went around on the engine to pinpoint this sound. It was not hard to find right at the top of the head on the leftside of engine. Took it into dealer and they say nothing is wrong. Now I will try again at another dealer and see what they say. This dealer said "we hooked it on the machine and all checked out". Trouble with so many of these new mechanics is all they can do is read a machine and not know the basics of engine diagnosis like we did years ago.
Well anyone have this same trouble. Would like to hear your outcome.
#73 of 109 Re: 09 Sienna engine noise [wisjeepman]
Nov 19, 2010 (9:46 am)
I'm surprised you're not getting a check-engine light. OBDII regs mean that a single misfire would trigger such a malfunction indicator.
How is your gas mileage? Besides the sound, is it running OK?