Is there anything that can be done to reduce fish-tail action? - Jeep Garage - Jeep Forum

Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK2 - > Trouble Shooting/Problems/Service

Reply
 
Thread Tools Display Modes
 
  #1  
Old 03-19-2015, 09:35 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Is there anything that can be done to reduce fish-tail action?

It's hard to describe and the dealership flat-out denies that it's not normal but it really bothers me.

When I hit a bump in the road that only involves one rear wheel (right or left), the back of the truck does a fish-tail type move. It doesn't skid or lose contact with the road but it moves from side to side. It happens more when the rear right (only) wheel hits a pot hole or manhole cover but it happens on the left as well. Could be called "body roll" but it's not exactly that. Even describing this to the dealer triggers looks of dumbfoundment and utter confusion that almost ensures the boilerplate "naw. that's normal" response after a thorough 7264 point inspection.

NO other truck/car I've ever owned does this. My wife had a 2012 Rogue (a piece of crap in nearly everyway) that rode over non-symetrical bumps better than my 2014 LTD. Her new 2015 Rogue (MUCH improved) kills my 2014 LTD in ride. The $14,000 hyundai sonata I rented on vacation didn't do this.

Dealer says they don't notice a thing. Or they do and it's normal. Clearly a cost aversion model.

My question is for all you smart mechanic types...Regardless of what the dealer says, is there anything one can do to address this type of ride characteristic? Do you replace with stiffer shocks? Is there a suspension adjustment that can be made? Are the tires to blame?

I have owned these tires (Destination ATs)on several different trucks and it's never been an issue, so this is not what I'm thinking at all.

I love the truck in every other way and haven't had a single issue outside of the ridiculous CV boot issue that Jeep handled in a completely intelligence-insulting manner.

Drives me nuts though. Not counting on the dealer to help but wondering what can be done to address this.

Thanks fellas.

__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 03-19-2015, 09:47 AM
Member
 
Join Date: Feb 2015
Posts: 335
Thanks: 10
Thanked 20 Times in 20 Posts
Rep Power: 2308
BirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond reputeBirchyBoy has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

I've noticed this on my '13 GC Trailhawk with the Goodyear tires. Not enough to make me nervous, but it does seem somewhat unsettled.
Reply With Quote
  #3  
Old 03-19-2015, 09:50 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Yeah, don't think it's the tires.
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old 03-19-2015, 09:53 AM
Member
 
Join Date: Apr 2012
Posts: 697
Thanks: 144
Thanked 81 Times in 73 Posts
Rep Power: 8108
XKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Easy fix: swap out the front and rear anti-sway bars with those from an SRT8. There are a couple other comments and postings in regards to this on this forum.


Sent from NSA Surveillance Van #574
Reply With Quote
  #5  
Old 03-19-2015, 09:56 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Really??!! That's awesome! No two better words in the english language than "easy fix."

Any chance you could post a link to the threads (I can't find anything like that with a search).

Thanks!!
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
  #6  
Old 03-19-2015, 10:22 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Also, is it just the bar I would need or is it all the bushings and end links and whatnot. My truck only has 10K on it so I;m hoping it's just the bar.

Thanks so much.
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
  #7  
Old 03-19-2015, 04:24 PM
Member
 
Join Date: Apr 2012
Posts: 697
Thanks: 144
Thanked 81 Times in 73 Posts
Rep Power: 8108
XKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Sway bars include new bushings & you will need the sway bar links. Fits 2012-2015 models.

Front:
68184511AA Sway bar
68091837AB Link (driver)
68091836AA Link (passenger)

Rear:
68184507AA Sway bar
68091853AA Link (x2)

$805.20 MSRP

justforjeeps.com has them for way less
Reply With Quote
  #8  
Old 03-20-2015, 07:59 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

There seems to be 2 schools of thought on whether both front and rear are necessary.

I've read that the front bar is essentially the same as the SRT8 bar dimensionally.

I know the purists would never consider doing just the rear but for the cheap bastards on the forum, is there an abosolute need to do both? If it makes the suspension perform significantly differently (to the point of being dangerous or something), obviously that's a different story but if my main goal is to reduce side-to-side pull in the rear, can I get away with just the rear bar?
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
  #9  
Old 03-20-2015, 08:02 AM
Member
 
Join Date: Apr 2012
Posts: 697
Thanks: 144
Thanked 81 Times in 73 Posts
Rep Power: 8108
XKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

The action/reaction of one-in your case the rear-may inversely affect the action/reaction of the front. Do you need to do both? Probably not. You can get away with just doing the rear, and down the road perhaps you might want to improve the front as well.


Sent from NSA Surveillance Van #574
Reply With Quote
  #10  
Old 03-20-2015, 08:04 AM
Member
 
Join Date: Apr 2012
Posts: 697
Thanks: 144
Thanked 81 Times in 73 Posts
Rep Power: 8108
XKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond reputeXKTrail has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Two other things to consider-the stock factory tires are quite pitiful. But you can improve them-insignificantly-by increasing the air pressure over the factory 33 PSI. Lots of people on here run them at 35-40psi.


Sent from NSA Surveillance Van #574
Reply With Quote
  #11  
Old 03-20-2015, 08:07 AM
Member
My Jeep: 2014 3.6L WK2
 
Join Date: Apr 2014
Location: Rochester, NY
Posts: 129
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1471
redddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond reputeredddog has a reputation beyond repute
Re: Is there anything that can be done to reduce fish-tail action?

Yeah, I've never even ridden on the OEM tires. I had them swap out to Destination ATs as part of the deal. Run them at 36-37.
__________________
2014 Grand Cherokee LTD
Moonroof
8.4" Nav
18" Destination ATs
Built: 4/1/14
Reply With Quote
  #12  
Old 03-20-2015, 08:34 AM
Member
 
Join Date: Aug 2010
Posts: 516
Thanks: 7
Thanked 63 Times in 57 Posts
Rep Power: 3017
Nonstop is on a distinguished road
Re: Is there anything that can be done to reduce fish-tail action?

So let me get this straight, the problem so far is a Jeep that primarily from one side and under specific conditions jumps out or wiggles a bit.. So far the advice is to use either one or both heavier sway bars to increase roll stiffness all over or in an unbalanced way on this Jeep without understanding the effect, yeah that's a quick way to really fishtail.. Or to increase tire pressures? Yeah you guys got this. It's not like both of those would amplify an underlying problem...


I'd check things that actually contribute to or cause the problem before you make it more pronounced or mask it with something that could actually just make it harder to see until it shows in a more dangerous way. .. What might create that squirmy unsettling feeling in such a specific way? Alignment. damaged bushings, over or under torqued bolts, shocks, whatever, but these things control the movement that you are saying is not behaving correctly. But hey I like the bars, but my jeep was arrow straight to start. I set my tires at 34 and they run 36-38 when hot.. Subscribed
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanting to reduce body roll...How 04wjfreedomedition Suspension Modifications 2 06-27-2012 02:41 PM
Will the CRD reduce hemi/pentastar demand? suprand Grand Cherokee - WK2 - 5 05-11-2012 01:00 PM
Doesn't this reduce the amount of clearance? JeepMonster Grand Cherokee - WK2 - 12 05-06-2012 09:00 AM
Isn't there anything we can do collectively...... BostonDMD Grand Cherokee SRT - WK2 47 08-17-2011 10:40 AM

» Premium Vendor Showcase
Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 03:52 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community

JeepGarage.org is in no way associated with or endorsed by FCA US LLC. Chrysler, Dodge, Jeep, Ram, Mopar and SRT are registered trademarks of FCA US LLC.