When I turn a corner or go over a speed bump, my 2008 Sienna van sometimes sounds as if it's going into neutral, and then it's really slow moving and shifting. Is it a transmission problem?

Asked by Aug 27, 2013 at 06:57 PM about the 2008 Toyota Sienna

Question type: Maintenance & Repair

The problem I'm having doesn't occur all the time.  I'm teaching my 16-year-old daughter
how to drive, and this is really annoying for both of us.  My son drove the van - our
mechanic drove the van - it didn't happen when they drove it. Can this be fixed without
having to replace the transmission?

6 Answers

I'd grab a woodblock and floor jack to look for a cracked motor/transmission mount...will post a few choices if you cannot put a finger on a source for these~

transmission mount~

motor mount---use the floorjack to find the fault in these~


Slow shifting eh. ??? Thats a wierd one. Loose filter in the tranny? The filter might shift with the fluid sloshing around and the pump might suck a little air? Hope it's something wierd and simple and not the tranny going.


1 of 1 people found this helpful.

Watched the vid. If it's doing that then yah, wow motor mount. The ones you have pictured are for the front. If it rocks like in the vid you need the rear mount, the evil mount, the very evil mount.

Your Answer


Looking for a Used Sienna in your area?

CarGurus has 19,310 nationwide Sienna listings starting at $1,300.


Toyota Sienna Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Honda Odyssey
278 Great Deals out of 33,227 listings starting at $2,200
Used Toyota Highlander
443 Great Deals out of 44,503 listings starting at $1,750
Used Honda Pilot
452 Great Deals out of 39,064 listings starting at $999
Used Toyota Camry
787 Great Deals out of 71,592 listings starting at $175
Used Dodge Grand Caravan
213 Great Deals out of 30,741 listings starting at $600
Used Kia Sedona
75 Great Deals out of 7,389 listings starting at $500
Used Toyota RAV4
483 Great Deals out of 67,002 listings starting at $1,995
Used Chrysler Town & Country
137 Great Deals out of 12,502 listings starting at $1,997
Used Nissan Quest
38 Great Deals out of 2,258 listings starting at $1,800
Used Chrysler Pacifica
72 Great Deals out of 29,537 listings starting at $2,995
Used Toyota 4Runner
299 Great Deals out of 30,520 listings starting at $2,995
Used Toyota Tacoma
431 Great Deals out of 40,775 listings starting at $2,600
Used Toyota Sequoia
88 Great Deals out of 4,848 listings starting at $3,495
Used Toyota Corolla
643 Great Deals out of 66,145 listings starting at $1,599
Used Honda CR-V
541 Great Deals out of 67,089 listings starting at $1,800

Used Cars For Sale

2018 Toyota Sienna For Sale
7,305 listings starting at $25,040
2017 Toyota Sienna For Sale
15 Great Deals out of 2,110 listings starting at $19,995
2016 Toyota Sienna For Sale
40 Great Deals out of 1,438 listings starting at $15,995
2015 Toyota Sienna For Sale
61 Great Deals out of 2,252 listings starting at $12,995
2014 Toyota Sienna For Sale
27 Great Deals out of 981 listings starting at $10,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.