Outback Shudder - Subaru Outback - Subaru Outback Forums

SubaruOutback.org is the premier Subaru Outback Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Rate Thread
Old 04-06-2014, 03:29 PM   #1 (permalink)
Registered User
Join Date: Apr 2013
Posts: 2
Feedback Score: 0 reviews
Default Outback Shudder

I have a 2012 Outback 3.6R Limited. When cruising at about any speed and the trans upshifts under light acceleration the entire vehicle shudders. First I thought bent driveshaft but if that were the case it would happen all the time. This issue occurs about 85% of the time. Now I am really thinking it's a trans issue (5AT) has anyone else heard of or had this issue. The fluid is clean and full. We have had the car since it was new and it has 37k on it now. My fiance and I bought it together and she is the one tha actually brought it to my attention which says it's noticeable. Thanks
LanceGroff is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 04-06-2014, 10:57 PM   #2 (permalink)
cardoc's Avatar
Join Date: Aug 2012
Location: Austin, Texas
Car: 2001 VDC/SC One of a Kind
Posts: 10,420
Feedback Score: 2 reviews

There could be a few things that is doing it.

The TCM (transmission module) is programmed to engage the torque converter clutch even at low speeds for economy purposes. If the low torque clutch engagement is causing the shudder, a flush may correct it.

You may have a dirty throttle body. The system is drive by wire (DBW) and is electronically controlled by the ECM and the accelerator pedal sensor. If the throttle is gummed up, it will effect air flow and the TPS (throttle position sensor) activity and measurement.

A clogged or clogging PCV valve could be effecting air flow.

Dirty air filter could do it.

Weak battery or dirty grounds are another possibility.

Sticky brake at one wheel.

All possibles. You just have to check. I would start with maintenance items like the throttle body and PCV valve cleaning, clean all the grounds and battery cables and go from there.
Sleeper VDC
P0420 Diagnosis

cardoc is offline   Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Subaru Outback - Subaru Outback Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 06:07 PM.

Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Copyright 2009-2010 SubaruOutback.org. All Rights Reserved.