Downshifting to low CLUNK - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 18 Old 11-02-2013, 05:51 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
Downshifting to low CLUNK

HI All, Im new and I have searched and read at least 15-20 posts on this topic and haven't seen a solution. Evidently its a fairly common problem.

2005 / 4.7 / 2WD / Grand Cherokee / 90k miles. When downshifting into low I get a clunk. The faster I stop, the louder the bang. If I shift into neutral at 25-30 mph and stop I have no issues. It gets worse when the vehicle gets heat in it. For the 1st few miles its very soft or unnoticeable. But after 5-10 minutes in its very repeatable.

Transmission?

RaceDirector is offline  
Sponsored Links
Advertisement
 
post #2 of 18 Old 11-02-2013, 05:56 PM
JeepN4KC
Keep on Jeepin on........
 
JeepN4KC's Avatar
 
Join Date: Jul 2011
Location: Blue Springs
Posts: 6,942
Your question is confusing.

2wd shifting into low? What does that mean?

Vehicle gets heat in it.........?

~Mike~

Build Thread WK
Other Build Thread XJ
Sept '13/Jan '15/Jun '16 COTM
JeepN4KC is offline  
post #3 of 18 Old 11-02-2013, 06:00 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
Sorry, auto transmission downshifting into 1st gear at around 10-15 mph while slowing down or braking.
RaceDirector is offline  
post #4 of 18 Old 11-02-2013, 06:05 PM
JeepN4KC
Keep on Jeepin on........
 
JeepN4KC's Avatar
 
Join Date: Jul 2011
Location: Blue Springs
Posts: 6,942
Downshifting with the autoshift or the transmission itself?

If you are using the autostick to downshift into 1st as you come to a stop then I'd say stop doing that - let the tranny do it.

If the tranny is downshifting rough then I'd say get it serviced - drain/filter swap/refill. Due anyway if it's never been done.

~Mike~

Build Thread WK
Other Build Thread XJ
Sept '13/Jan '15/Jun '16 COTM
JeepN4KC is offline  
post #5 of 18 Old 11-02-2013, 06:19 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
No auto stick shifting, I just leave it in drive. I guess I'll pull the pan and change the filter. Does the converter have a drain plug?
RaceDirector is offline  
post #6 of 18 Old 11-02-2013, 06:21 PM
JeepN4KC
Keep on Jeepin on........
 
JeepN4KC's Avatar
 
Join Date: Jul 2011
Location: Blue Springs
Posts: 6,942
I'm not sure what you mean by converter. The transmission pan has to be dropped in order to drain the fluid..

~Mike~

Build Thread WK
Other Build Thread XJ
Sept '13/Jan '15/Jun '16 COTM
JeepN4KC is offline  
post #7 of 18 Old 11-02-2013, 06:21 PM
caulk04
Registered User
2008 WK 
 
Join Date: Jan 2013
Location: Greenville
Posts: 2,375
No, just drop the pan.

Being 2wd, you probably just have one filter but the possibility exists that you have the cooler return filter as well. The cooler return filter is a spin on just like the engine oil filter. It's inside the pan as well.

08 Limited Hemi - wheels, tires, springs...ya know, stuff
caulk04 is offline  
post #8 of 18 Old 11-02-2013, 06:30 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
Quote:
Originally Posted by JeepN4KC View Post
I'm not sure what you mean by converter. The transmission pan has to be dropped in order to drain the fluid..
The torque converter holds quite a bit of fluid, some have a bolt that you can remove to drain the fluid out. If not than a couple quarts of old fluid remain in the system.
RaceDirector is offline  
post #9 of 18 Old 11-02-2013, 07:57 PM
quicksilverado
Registered User
2007 WK 
 
Join Date: Jun 2012
Location: Marietta
Posts: 228
Never seen a tq converter that has a drain plug in it.

07 Grand Cherokee Limited CRD 4X4 GDE tune
00 Silverado 10 sec work truck
quicksilverado is offline  
post #10 of 18 Old 11-11-2013, 04:37 AM
hdsport
Registered User
2008 WK 
 
Join Date: Aug 2010
Location: Hills of Pa.
Posts: 376
Clunk may be bad bushing(s).

2001 Winnebago Adventurer 32v Motor Home
2008 Jeep GC Limited Toad, 4.7 L V-8, QTII
US Army Vet, 8th Army, 11th Evac SMBL Hospital, Pusan, South Korea
In God We Trust
hdsport is offline  
post #11 of 18 Old 11-11-2013, 04:52 AM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
After reading the search results I was hoping that was the problem but it's transmission related. Only issue it the downshift into 1st. Haven't had time to drop the pan but I did notice it doesn't happen when it's cold. For the 1st 10 minutes of driving it's smooth as silk. After the transmission get some heat in it it returns. It gets worse the faster I slow down. A slow rolling stop it's hardly noticeable, If I hammer the brakes it bangs pretty good. Sliding it into neutral when coming to a stop eliminates the clunk everytime.

I hope a oil change and filter helps. I also heard about some software flash update ?

Thanks for the replys
RaceDirector is offline  
post #12 of 18 Old 11-11-2013, 06:08 PM
quicksilverado
Registered User
2007 WK 
 
Join Date: Jun 2012
Location: Marietta
Posts: 228
Does it clunk when you shift from neutral-drive or neutral-reverse?

07 Grand Cherokee Limited CRD 4X4 GDE tune
00 Silverado 10 sec work truck
quicksilverado is offline  
post #13 of 18 Old 11-11-2013, 07:50 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
No, never. It happens only while slowing down when the transmission goes into 1st gear.
RaceDirector is offline  
post #14 of 18 Old 11-12-2013, 01:55 PM
nick81
Registered User
 
Join Date: Jun 2005
Posts: 59
I would at least look at the differential bushing that is on top of your front diff. Mine was clunking around and replacing that solved it for good. You can visually inspect and see if it is an issue....just gotta get under there.
nick81 is offline  
post #15 of 18 Old 11-12-2013, 03:31 PM Thread Starter
RaceDirector
Registered User
 
Join Date: Mar 2013
Location: The Villages
Posts: 7
This is a 2wd Jeep. No front differential but thanks anyway.
RaceDirector is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome