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2006 sienna sloppy shifting with full fluid #4696938
03/16/18 06:04 PM
03/16/18 06:04 PM
Joined: Feb 2009
Posts: 527
Minnesota
Huie83 Offline OP
Huie83  Offline OP
Joined: Feb 2009
Posts: 527
Minnesota
We picked up a 06 sienna last year, low miles, around 96k now, 83k when we got it.

Iíve slowly been changing the trans fluid out by draining, measuring the old fluid and refilling the measured amount with Toyota t-iv fluid, what it specs. Iíve done 5 drain and fills, fluid is bright pink now. The fluid shows around the top notch in the hot measurement. After going for a 20-30 minute drive.

Iíve been struggling with intermittent poor shift quality after it warms up. Either shift flares or sluggish shifting. Cold it shifts beautifully, nice and crisp shifts through all gears.

Iíve tried to add fluid and also Iíve sucked the fluid out the full tube using my mighty VAC to a level right at the lower hot mark. It definitely shifts better with the fluid at the lower level.

Has anyone experienced running at a lower level improve shift feel?

Last edited by Huie83; 03/16/18 06:05 PM.
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4696955
03/16/18 06:24 PM
03/16/18 06:24 PM
Joined: Jan 2005
Posts: 203
midwest
muddawgs Offline
muddawgs  Offline
Joined: Jan 2005
Posts: 203
midwest
Did you pull the pan or filter? I've heard of filters being changed and not seated right causing all kinds of shift issues at different levels. I believe that its also adaptive so if you have not pulled battery cable and let it sit for a hour or so. I use maxlife and Lubegard red in my Toyotas/lexus.

Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4696960
03/16/18 06:30 PM
03/16/18 06:30 PM
Joined: Nov 2008
Posts: 3,183
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,183
Oshawa, Ontario Canada
+1 drop the pan and change the filter. I'm sure it's covered in Goop.

I had a 98 sienna and cleaned the pan a few times, it shifted perfectly.


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4696962
03/16/18 06:32 PM
03/16/18 06:32 PM
Joined: Sep 2005
Posts: 269
Maine, USA
pda1122 Offline
pda1122  Offline
Joined: Sep 2005
Posts: 269
Maine, USA
You mentioned you are checking fluid level hot. But are you supposed to have it in neutral with the engine running? Iíd check the owners manual


'13 Toyota Tundra 5.7-Idemitsu
'08 Hyundai Elantra-Mobil 1
'96 Ranger R72 90hpJohnson
'03 Ski Doo REV 600 H.O.
Ď01 Kawasaki KDX 220r
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4696966
03/16/18 06:34 PM
03/16/18 06:34 PM
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
Maybe clinebarger sees this, if not PM him before doing anything, he is a pro and this is what he does.
I know what I would do but I defer to him.

Last edited by Trav; 03/16/18 06:36 PM.

ASE L1, Master. Deutsch Meisterbrief.
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4696978
03/16/18 06:44 PM
03/16/18 06:44 PM
Joined: Feb 2009
Posts: 527
Minnesota
Huie83 Offline OP
Huie83  Offline OP
Joined: Feb 2009
Posts: 527
Minnesota
I did not drop the pan to change the filter. Iím checking it on a level surface, engine running and trans in Park. Thatís what I read to do in the Sienna forums.

Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4697112
03/16/18 09:09 PM
03/16/18 09:09 PM
Joined: Feb 2018
Posts: 509
Chester County/Pa.
BAJA_05 Offline
BAJA_05  Offline
Joined: Feb 2018
Posts: 509
Chester County/Pa.
Never would hurt to add a bottle of Lube Guard Red into the tranny also. First I would follow Travs advice though.


2017 VW Jetta SE TSI 1.4L Turbo (hers)
M1 Euro 0W40 & FU (19K)
2008 Acura TL 3.2L PPPP 0W20 & FU (108K)
2005 Subaru Baja AWD 2.5L N/A 5spd.
QSHM 5W30 & FU (96K)
2000 Ram 4X4 5.9L (93K) PYB 10W30 & FU
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4697180
03/16/18 10:43 PM
03/16/18 10:43 PM
Joined: Aug 2013
Posts: 342
Alberta
tcp71 Offline
tcp71  Offline
Joined: Aug 2013
Posts: 342
Alberta
We have a 2005 sienna we bought new. It definitely likes the level lower than the top line and flares the 2 to 3 shift if overfilled. Pull out 1/3 to 1/2 quart and add a couple of ounces of lubegard red. Itíll be fine. The only recommended service for th U151 transmission is a drain and fill. Do NOT add lubegard ďtranny-fixĒ. Itíll shift very harshly.

Last edited by tcp71; 03/16/18 10:44 PM.

2016 F150 Eco: Edge 0w40
2005 Sienna 3.3: mobil 0w40 (varies)
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4697545
03/17/18 12:05 PM
03/17/18 12:05 PM
Joined: Jun 2011
Posts: 1,059
Texas
wag123 Offline
wag123  Offline
Joined: Jun 2011
Posts: 1,059
Texas
Try resetting the computer's memory by disconnecting the battery for 10 minutes so it will re-learn your driving style, you should notice an immediate change in shifting performance after you do this. Don't do this if you live in an area where it will need to pass an emission inspection within the next 30 days.

Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4718486
04/06/18 03:22 PM
04/06/18 03:22 PM
Joined: Feb 2009
Posts: 527
Minnesota
Huie83 Offline OP
Huie83  Offline OP
Joined: Feb 2009
Posts: 527
Minnesota
Just a follow up as it's been a few weeks. I added a bottle of Lubegard red and made sure the fluid was still right in between the hot marks after the LG. Shifts great now after the Lubegard has been in for a few weeks. It slowly improved over the past few weeks. No more shift flares and quality of the shifts has improved.

Not sure why the trans doesn't like just plain T-IV but happy I found a solution.

Last edited by Huie83; 04/06/18 03:23 PM.
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4720131
04/08/18 03:22 AM
04/08/18 03:22 AM
Joined: Aug 2004
Posts: 20,043
CA
The Critic Offline
The Critic  Offline
Joined: Aug 2004
Posts: 20,043
CA
If the car was here, I would scan the car with Techstream to see if there are updated calibration files available for the TCM. Some of the early 3MZ-FE's with the 5-speed auto have an updated calibration available for shift quality issues.


2011 Toyota Prius - 173k - Various 0W-20 (Brew)
2007 Honda Accord 2.4 - 131K - Mobil 1 EP HM 5W-30
Re: 2006 sienna sloppy shifting with full fluid [Re: Huie83] #4720655
04/08/18 03:13 PM
04/08/18 03:13 PM
Joined: Oct 2012
Posts: 2,467
Staten Island, NY
michaelluscher Offline
michaelluscher  Offline
Joined: Oct 2012
Posts: 2,467
Staten Island, NY
I'm taking close notes here, as I'm also having shifting issues with my Camry's 151E

Was thinking it's time for a shift kit


'06 Toyota Camry SE V6 3MZ-FE 100k
'01 Mercury Villager Estate VG33E 52k
'06 Ford Taurus SE Vulcan 60k
'13 Chrysler 300 3.6 Pentastar 230k

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