My Jeep JK is revving, but not gaining speed. - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-13-2017, 03:48 PM
Thread Starter
  #1
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
My Jeep JK is revving, but not gaining speed.

This happened to me a couple times. 1st scenario is when i was in a hurry, my jeep 09 jk started to have problems while driving. I would he pushing my gas pedal down and my rpm will rise but my jeep would not drive. It would not go past a certain speed. When i would drive up a hill, my jeep would not make it. So i had to down shift to 3rd or 4th gear to make the jeep push foward. Then i had to go slow for the rest of the way the way because id pushed it faster then my jeep would just rev and not gain speed. Then i left work about 9 hrs later, and my jeep would drive fine. That was about 2 months ago. Now last night it did a lil offroad in the woods cuz i was bored. I didnt push the jeep too hard but i did rev the engine just enough to get me out a spot. Honestly i didnt push it too hard. When i got back on thr road and picking up speed, it did the same before. It would rev but my jeep wouldnt gain speed. So i just drove home slow. I read online that there were several people that had that problem and it ended being a catalytic converter. My light came on for problems with my catalytic converter. Anyone know this issue and help?
My jeep is a 4dr 09 manual 6 speed.
I posted some pics of some discussions. Kind of makes sense to me.

Attached Thumbnails
Click image for larger version

Name:	20170913_145750_1505332029082.jpg
Views:	108
Size:	125.3 KB
ID:	3749321   Click image for larger version

Name:	Screenshot_20170913-034421_1505332062664.jpg
Views:	54
Size:	150.8 KB
ID:	3749329  

Click image for larger version

Name:	Screenshot_20170913-034840_1505332090689.jpg
Views:	48
Size:	151.7 KB
ID:	3749337  
Sharks51 is offline   Quote
Old 09-13-2017, 03:51 PM   #2
Jeeper
 
rsmwrangler's Avatar
 
Join Date: Nov 2015
Location: RSM, CA
Posts: 2,300
I'd guess your clutch is saying good bye.

__________________
2013 JKUS A5 | Socal Stock: 2.5" OME Frankenlift | 4.56's | Detroit TT Front | Eaton E-locker Rear | Steel Bumpers | Winch | Rockhard Oil/Trans, Evap Skids ,Rock Sliders | MB 352's 17x9 -12 offs | Nitto Trail Grapplers 315/70/17 | Magnaflow 10416/Dynomax 24246 | Hptuners VCM 3.6 | Superchips Flashcal
My Build
rsmwrangler is offline   Quote
Old 09-13-2017, 04:51 PM   #3
Jeeper
 
nighowl2000's Avatar
 
Join Date: Sep 2014
Location: Ottawa canada
Posts: 2,090
clutch is gone..... are you getting a bad smell when it does not accelerate?

another good test is to put it in 4th while stopped and let the clutch out. IF the jeep stalls clutch is fine. If it doesn't, clutch is bad
__________________
2014 jku sport S dual top, auto 3.73, max tow package
Mod's - jwm4x4.com grill insert,25" eyourlife LED bar, daystar switch pod fortin remote start,rugged ridge head liners, rubicon express transmission skid plate, smittybilt 76634 SRC Side Armor
nighowl2000 is offline   Quote
Sponsored Links
Advertisement
 
Old 09-13-2017, 05:05 PM   #4
Jeeper
 
cflo's Avatar
 
Join Date: Sep 2017
Location: Newtown Square, PA
Posts: 158
As others have said, it's almost certainly your clutch. Remember, your clutch creates a direct mechanical connection between your wheels and your engine when it's working properly. This means that it's impossible for your revs to increase and not see a correlating increase in wheel speed. If you're revving and not speeding up on a dry road, then that means your clutch is slipping. A continuously slipping clutch generates a lot of heat, and if you drive it like that long enough, it eventually won't transmit any power and may cause other damage.

You need to get it replaced as soon as possible before it leaves you stranded. I've owned mostly manuals and those symptoms have always been a worn out clutch.
__________________
2013 JKUR True Blue, Manual, 4.88 UD60s, ~3.5" lift, Fox 2.0 Res Shocks, 37x13.5x17 Nitto Exograpplers, XD128 Machete Wheels, Hydro Assist, assorted other bits
cflo is offline   Quote
Old 09-13-2017, 07:57 PM
Thread Starter
  #5
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Quote:
Originally Posted by nighowl2000 View Post
clutch is gone..... are you getting a bad smell when it does not accelerate?

another good test is to put it in 4th while stopped and let the clutch out. IF the jeep stalls clutch is fine. If it doesn't, clutch is bad
I dont smell anything. No odor comes up. Clutch is new. I had to put a duralast brand from autozone this time last year cause i had to have transportation to get my job and get back home to ny from pa. I went offroad for the weekend so i couldnt wait.
Sharks51 is offline   Quote
Old 09-13-2017, 07:58 PM
Thread Starter
  #6
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Is there a better brand out there? I read 50 to 50 on center force
Sharks51 is offline   Quote
Old 09-13-2017, 09:45 PM
Thread Starter
  #7
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
I drove my Jeep on the highway and drove fast for some reason I don't think my RPm. went above 2.5.
Sharks51 is offline   Quote
Old 09-14-2017, 01:23 AM   #8
Jeeper
 
dawhitesJKU's Avatar
 
Join Date: Jul 2012
Location: SoCal 951/714/562
Posts: 10,469
Send a message via Yahoo to dawhitesJKU
@Sharks51 did you resurface the flywheel when you installed your new clutch and changed the tob?

I had a similar symptom on my previous vehicle. I changed the clutch on a Sunday by myself. I used the same flywheel. It grabbed for a week and started slipping again. I then had to tear it apart, and reinstall it again with a new flywheel. My neck and body was sore for weeks.
__________________
Eat, Sleep, Jeep my build thread: https://www.wranglerforum.com/f314/dw...d-1343409.html
dawhitesJKU is offline   Quote
Old 09-14-2017, 11:48 AM
Thread Starter
  #9
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Quote:
Originally Posted by dawhitesJKU View Post
@Sharks51 did you resurface the flywheel when you installed your new clutch and changed the tob?

I had a similar symptom on my previous vehicle. I changed the clutch on a Sunday by myself. I used the same flywheel. It grabbed for a week and started slipping
again. I then had to tear it apart, and reinstall it again with a new flywheel. My neck and body was sore for weeks.
I didnt. Just replaced the clutch. I know, its a pain.
Sharks51 is offline   Quote
Old 09-14-2017, 04:04 PM   #10
Grooving With A Pict

5-Year WF Supporting Member
 
RhinoSportJKU's Avatar
 
Join Date: Jul 2017
Location: St. Louis
Posts: 2,400
When you sit at idle, and push the clutch in, do you hear any rattling/grinding noises? I'm afraid I'm not intimately familiar with the clutch design on an 09'. Old school would have me checking the throw out bearing and clutch fork to make sure it is engaging/disengaging properly.
RhinoSportJKU is offline   Quote
Old 09-14-2017, 05:53 PM
Thread Starter
  #11
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Quote:
Originally Posted by RhinoSportJKU View Post
When you sit at idle, and push the clutch in, do you hear any rattling/grinding noises? I'm afraid I'm not intimately familiar with the clutch design on an 09'. Old school would have me checking the throw out bearing and clutch fork to make sure it is engaging/disengaging properly.
It makes somewhat of a grinding noise.
Sharks51 is offline   Quote
Old 09-14-2017, 05:59 PM
Thread Starter
  #12
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
I'm having this problem as well. I hear it when im in 1, 2, 3rd gears when im going slow. After that it fades away. I hear it only when I'm pressing on the gas pedal. When I'm off, then it goes away until I press again. I hear coming from the bottom center front area.
https://youtu.be/5SazFr6CHuM
Sharks51 is offline   Quote
Old 09-15-2017, 10:43 AM   #13
WF approved Offical Jeep Account.
 
JeepCares's Avatar
 
Join Date: Jul 2011
Location: Mopar World Headquarters, Center Line, MI
Posts: 1,381
Quote:
Originally Posted by Sharks51 View Post
I'm having this problem as well. I hear it when im in 1, 2, 3rd gears when im going slow. After that it fades away. I hear it only when I'm pressing on the gas pedal. When I'm off, then it goes away until I press again. I hear coming from the bottom center front area.
https://youtu.be/5SazFr6CHuM
Hi Sharks51,

Sorry to hear about this! If you decide to visit your local dealership for further diagnosis I'd be happy to offer assistance if needed. Just send us a PM with your VIN and let me know.

Andrea
Jeep Social Care Specialist
JeepCares is online now   Quote
Old 09-08-2018, 05:55 PM   #14
Jeeper
 
Hoseman's Avatar
 
Join Date: Aug 2014
Location: Kalifornia
Posts: 340
Hey Sharks,
Did you figure out what was causing this? I've got a 2011 JKU doing similar thing today... But it has an auto trans.
Just curious what yours ended up being.
Thanks.
__________________
Desert Fox Build
Hoseman is offline   Quote
Old 09-10-2018, 10:59 AM   #15
Jeeper
 
Join Date: Sep 2012
Location: South East BC
Posts: 1,480
Quote:
Originally Posted by Hoseman View Post
Hey Sharks,
Did you figure out what was causing this? I've got a 2011 JKU doing similar thing today... But it has an auto trans.
Just curious what yours ended up being.
Thanks.
An auto that is slipping is either fluid level related, or some other issue with low pressure (a sensor). First step is check the tranny fluid for level and condition... if it got too hot it turns to goo and if you don't flush it quickly it can eat the whole tranny. On an auto, RPMS up and vehicle not moving faster has to be the transmission.

On an manual, engine RPMS up and vehicle not moving faster has to be the clutch...
BeyondYourFrontDoor is offline   Quote
Old 09-10-2018, 11:53 AM   #16
Jeeper
 
derf's Avatar
 
Join Date: Oct 2012
Location: Littleton, CO
Posts: 3,428
Quote:
Originally Posted by Hoseman View Post
Hey Sharks,
Did you figure out what was causing this? I've got a 2011 JKU doing similar thing today... But it has an auto trans.
Just curious what yours ended up being.
Thanks.
The automatic you have is notorious for having reliability problems. If it's not a low fluid problem, the bands and/or clutches inside the transmission are probably wearing out. There's a good chance a rebuild is in your future. How many miles are on your Jeep?
__________________
2001 XJ - 4.0/AW4/NP242/D44/D44
1991 MJ - 2.5/AX5/D35
1987 MJ - 4.0/BA10-5/D35
1986 J10 - 401/700R4/NP208/D44HD/D60FF

My gear ratio calculator
derf is offline   Quote
Old 09-10-2018, 01:16 PM   #17
Jeeper
 
Join Date: Sep 2016
Location: WV
Posts: 2,240
Quote:
Originally Posted by Sharks51 View Post
I drove my Jeep on the highway and drove fast for some reason I don't think my RPm. went above 2.5.
I'm confused. Is the engine revving and you're not accelerating, or are you hitting the gas and the engine won't go above 2.5k RPM? Those are two entirely different situations indicating entirely different problems.


If you hit the gas and the RPMs go up to say 3.5-4k and you aren't accelerating, the clutch is slipping. If you hit the gas and the RPMs won't go above 2.5k, you're probably in limp mode due to a bad catalytic converter (or something else).
Prages is offline   Quote
Old 09-10-2018, 07:21 PM   #18
Jeeper
 
nighowl2000's Avatar
 
Join Date: Sep 2014
Location: Ottawa canada
Posts: 2,090
Quote:
Originally Posted by Hoseman View Post
Hey Sharks,
Did you figure out what was causing this? I've got a 2011 JKU doing similar thing today... But it has an auto trans.
Just curious what yours ended up being.
Thanks.
your auto tranny is toast ...... going to cost you 3k to fix it.
__________________
2014 jku sport S dual top, auto 3.73, max tow package
Mod's - jwm4x4.com grill insert,25" eyourlife LED bar, daystar switch pod fortin remote start,rugged ridge head liners, rubicon express transmission skid plate, smittybilt 76634 SRC Side Armor
nighowl2000 is offline   Quote
Old 09-26-2018, 05:31 AM
Thread Starter
  #19
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Quote:
Originally Posted by Hoseman View Post
Hey Sharks,
Did you figure out what was causing this? I've got a 2011 JKU doing similar thing today... But it has an auto trans.
Just curious what yours ended up being.
Thanks.
Sorry. Are you talking about the revving or the noise. The noise was my front drive shaft. The bearings were bad, so I replaced the whole drive shaft. And the noise stopped.
Sharks51 is offline   Quote
Old 09-26-2018, 05:35 AM
Thread Starter
  #20
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Sorry but I'm currently overseas. Haven't touched my jeep in a while. I thinks the clutch. It's POS AutoZone clutch that I needed to replace last min. They say when the clutch overheats, it doesn't catch and slips. When I get back home, I will buy a better clutch and hopefully that'll fix it. If u did already, please let us know.
Sharks51 is offline   Quote
Old 09-26-2018, 05:39 AM
Thread Starter
  #21
Jeeper
 
Sharks51's Avatar
 
Join Date: Jan 2017
Location: Westchester county ny
Posts: 109
Quote:
Originally Posted by Prages View Post
Quote:
Originally Posted by Sharks51 View Post
I drove my Jeep on the highway and drove fast for some reason I don't think my RPm. went above 2.5.
I'm confused. Is the engine revving and you're not accelerating, or are you hitting the gas and the engine won't go above 2.5k RPM? Those are two entirely different situations indicating entirely different problems.


If you hit the gas and the RPMs go up to say 3.5-4k and you aren't accelerating, the clutch is slipping. If you hit the gas and the RPMs won't go above 2.5k, you're probably in limp mode due to a bad catalytic converter (or something else).
I will be driving and after a certain speed, it will rev. But it only happened twice. I do need a cata convrter. I feel like it only happens when I push it's limits too much. Then the jeep cools down and it works perfect.

Sharks51 is offline   Quote
Reply

Thread Tools

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






All times are GMT -5. The time now is 05:17 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.