Jump to content

Drivetrain Clunking


GroceryGetr

Recommended Posts

Hi All, First time post. My wife's 2019 ST has a bit of drivetrain noise that has had me concerned for awhile now and I want to fix. Before heading to the dealer I figured Id ask around in order to show up informed considering it's OOW. (100K)

 

The sound is not very loud, just a slight clunking sound (middle rear) whenever you let off on the gas or accelerate at lower speeds (under 40) It's probably doing it at higher speeds but cant be heard due to higher rpms and road noise. My first thought was a bad U joint or some slack in the diff but I'm fairly certain these AWD units are built a little differently? My inspection mechanic said it was drivetrain slack (not very specific) and to just ignore it (not happening). No surging or bucking, just an annoying sound that says wear and a potential catastrophic tear...

 

Any ideas? Thx

Edited by GroceryGetr
Link to comment
Share on other sites

Easiest thing to do is get the car up on ramps, or a lift if you can, and engine off, in park, put your hands on the driveshaft(s) and rotate them

by hand.

 

They should move slightly but not a lot.  Especially pay attention to the areas around the u-joints, connections to the rear diff and transmission.

 

If it feels fairly tight, then there may be no issue at all.  Also check any mounting points along the driveshaft(s) to the body as a bolt may be loose causing the noise you are hearing.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...