TJ loses power going up hill - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ 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 03-23-2013, 05:06 PM   #1
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
TJ loses power going up hill

I have a 2006 Jeep Rubi that has only 14k miles. When I drive up to the mountains and im going up hill I loss 90% of my power. My gas pedal is to the floor. When I drive on flat the jeep drives fine. Someone told me that I should check the filter in the transmission to see if it fell off. Anyone else heard of that? Any advise would be much appreciated. Thanks

Paceman is offline   Quote Quick Reply
Old 03-23-2013, 05:18 PM   #2
Jeeper
 
Join Date: Dec 2011
Posts: 103
Do you an automatic or manual? Also, are you running stock size tires?

vwlos is offline   Quote Quick Reply
Old 03-24-2013, 02:21 AM   #3
Jeeper
 
jeepndon's Avatar
 
Join Date: Feb 2012
Location: Denver CO
Posts: 156
So what mountains are we talking about?? Manual transmissions do not have filters and automatic trans the filters are internal and can't fall off and if it did you would have bigger problems than loss of power.

I would start with simple things you can check on your own Spark plugs make sure they are Gapped correctly the gap should be .035, air filter make sure it is not clogged with dirt make sure it is clean and dry, plugged exhaust no dents in the pipe or mufflers , Check to make sure the coil rail is fully attached to the engine and tight, it should have 4 bolts holding it on the engine.

Is the engine giving any codes you can take it to Advanced auto or auto zone they can tell you if there are any stored codes in the computer.

The Factory service manual states to check the following for loss of power.*

ENGINE LOSS OF POWER
1. Worn or burned distributor rotor
2. Worn camshaft position sensor
shaft position sensor.
3. Worn or incorrect gapped spark
plugs
4. Dirt or water in fuel system
5. Faulty fuel pump
6. Incorrect valve timing
7. Blown cylinder head gasket
8. Low compression 8. Test cylinder compression.
9. Burned, warped, or pitted valves
10. Plugged or restricted exhaust
system
11. Faulty ignition coil rail
__________________
2004 Jeep Rubicon, 3.5 Rubicon Express lift & Front adjustable front & rear track bar, Currie Currentlync Heavy-Duty Tie rod System, Terraflex Monster Long arm, Terraflex disconnects, Bilstein 5100 Shocks, 33 x 10.5 BFG AT on Jeep Ravine rims, Warn Zeon 10K Winch, Warn Stubby Front bumper, Body Armor rear swingout.
jeepndon is offline   Quote Quick Reply
Old 03-24-2013, 08:21 AM   #4
Yipeee Kay Ayyy

WF Supporting Member
 
Wesboy's Avatar
 
Join Date: Feb 2010
Posts: 2,029
Running bigger than stock tires with stock diff gears = Jeep dies on hills.
Wesboy is offline   Quote Quick Reply
Old 03-24-2013, 09:07 AM   #5
Jeeper
 
Ptlm1013's Avatar
 
Join Date: Jun 2012
Posts: 62
Check to see if there are any error codes by turning ur key ON OFF ON OFF ON without starting jeep. The code will come up on odometer. Does it idle high while parked? If so it might me the throttle position sensor
Ptlm1013 is offline   Quote Quick Reply
Old 03-24-2013, 09:22 AM   #6
Jeeper
 
Join Date: May 2012
Posts: 52
Mine does this too, but I know it is because of my setup... 33" tires with 3.73 gears... I just downshift to handle hills and mountains.
RufusPumble is offline   Quote Quick Reply
Old 03-24-2013, 12:53 PM   #7
Jeeper
 
jeepndon's Avatar
 
Join Date: Feb 2012
Location: Denver CO
Posts: 156
Quote:
Originally Posted by RufusPumble View Post
Mine does this too, but I know it is because of my setup... 33" tires with 3.73 gears... I just downshift to handle hills and mountains.
I have run across many people that don't realize that they have to downshift a manual going up a hill and say well i don't have to do that in my car with an automatic trans. Well of course you don't because its done AUTOMATICALLY.
__________________
2004 Jeep Rubicon, 3.5 Rubicon Express lift & Front adjustable front & rear track bar, Currie Currentlync Heavy-Duty Tie rod System, Terraflex Monster Long arm, Terraflex disconnects, Bilstein 5100 Shocks, 33 x 10.5 BFG AT on Jeep Ravine rims, Warn Zeon 10K Winch, Warn Stubby Front bumper, Body Armor rear swingout.
jeepndon is offline   Quote Quick Reply
Old 03-26-2013, 02:17 AM   #8
Jeeper
 
Join Date: Jul 2012
Location: Hawaii
Posts: 74
Quote:
Originally Posted by RufusPumble View Post
Mine does this too, but I know it is because of my setup... 33" tires with 3.73 gears... I just downshift to handle hills and mountains.
x2 same set up same problem same solution
Wheats is offline   Quote Quick Reply
Old 03-27-2013, 12:00 AM   #9
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
Sorry everyone just got back in town, Thank you all!!

My jeep:
2006 Rubi
Automatic
35x12 pro comps
488 gears
LSG 6" Teraflex suspension.
14K miles

The Jeep rides great going flat road but when I strat the incline to Flag or Grear I loss power to the point where the pedal is on the floor until the RPMs shoot straight up. I've never had this problem before. I've been up these mountains before with ease. I dont thinks its a code issue because I never had a engine light. Regarding the Transmission filter, I heard if it comes off it would cause this to happen (?) Tires are not the issue. Airfilter is clean. It starts like a charm and rides perfect around town.

I'm trying to trouble shoot this before I end up spending a lot $ (which I don't have)
Paceman is offline   Quote Quick Reply
Old 03-27-2013, 12:01 AM   #10
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
Quote:
Originally Posted by vwlos View Post
Do you an automatic or manual? Also, are you running stock size tires?

Automatic
35X12 Procomp
Gears 488
Paceman is offline   Quote Quick Reply
Old 03-27-2013, 01:14 AM   #11
RossRacing7x

WF Supporting Member
 
Kota7x's Avatar
 
Join Date: Jul 2011
Location: 93105, 92677, 92004
Posts: 1,557
Since you have the 42RLE transmission on 35s and 4.88. You will find that it does bog on hills. The transmission is geared way to high for our 4.88 and 35s. I head up a grade out of the town where our vacation house is and I find myself when doing 45mph having to step on the gas, when this happens the transmission downshifts into 2nd and the rpms jump to 4-5000 rpms after a second it up shifts back to 4th and does 2000 rpms. If this is what you are experiencing then you are going to have to either learn to live with it, or change your gearing to 5.13 which may make your top speed on the highway decrease. How long have you had this Jeep/lift and tires?
__________________
Sure you can follow... If you can keep up!!!
- 2004 Jeep Wrangler LJ 4.0
Kota7x is offline   Quote Quick Reply
Old 03-27-2013, 08:09 PM   #12
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
Quote:
Originally Posted by Kota7x View Post
Since you have the 42RLE transmission on 35s and 4.88. You will find that it does bog on hills. The transmission is geared way to high for our 4.88 and 35s. I head up a grade out of the town where our vacation house is and I find myself when doing 45mph having to step on the gas, when this happens the transmission downshifts into 2nd and the rpms jump to 4-5000 rpms after a second it up shifts back to 4th and does 2000 rpms. If this is what you are experiencing then you are going to have to either learn to live with it, or change your gearing to 5.13 which may make your top speed on the highway decrease. How long have you had this Jeep/lift and tires?

It's not the 4.88 or the size of the tires. I've made this trip 30 times with no problem going up the hills. It was just this last time I loss 90% of my power going up grade. My brother has the same jeep, tire 4.88 etc.. and he has no problems.
Paceman is offline   Quote Quick Reply
Old 03-27-2013, 08:12 PM   #13
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
Quote:
Originally Posted by Kota7x View Post
Since you have the 42RLE transmission on 35s and 4.88. You will find that it does bog on hills. The transmission is geared way to high for our 4.88 and 35s. I head up a grade out of the town where our vacation house is and I find myself when doing 45mph having to step on the gas, when this happens the transmission downshifts into 2nd and the rpms jump to 4-5000 rpms after a second it up shifts back to 4th and does 2000 rpms. If this is what you are experiencing then you are going to have to either learn to live with it, or change your gearing to 5.13 which may make your top speed on the highway decrease. How long have you had this Jeep/lift and tires?
opps, sorry - I bought the jeep new and the lift & tires where put on the next day. 2006 only 14k miles
Paceman is offline   Quote Quick Reply
Old 03-27-2013, 08:33 PM   #14
Newb
 
Join Date: Mar 2013
Posts: 4
Quote:
Originally Posted by Ptlm1013 View Post
Check to see if there are any error codes by turning ur key ON OFF ON OFF ON without starting jeep. The code will come up on odometer. Does it idle high while parked? If so it might me the throttle position sensor
'97 was the last year for that little trick.
RypH is offline   Quote Quick Reply
Old 03-27-2013, 08:42 PM   #15
Jeeper
 
InvisiblePants's Avatar
 
Join Date: Jan 2013
Location: Charleston, SC
Posts: 517
Images: 11
Quote:
Originally Posted by RypH View Post
'97 was the last year for that little trick.
Actually it doesn't work on 98-2000 models.
InvisiblePants is offline   Quote Quick Reply
Old 03-27-2013, 11:59 PM   #16
RossRacing7x

WF Supporting Member
 
Kota7x's Avatar
 
Join Date: Jul 2011
Location: 93105, 92677, 92004
Posts: 1,557
Quote:
Originally Posted by RypH View Post
'97 was the last year for that little trick.
Works on my 2004. Dad's 1998 TJ does it.
__________________
Sure you can follow... If you can keep up!!!
- 2004 Jeep Wrangler LJ 4.0
Kota7x is offline   Quote Quick Reply
Old 03-28-2013, 03:27 PM   #17
Jeeper
 
Ptlm1013's Avatar
 
Join Date: Jun 2012
Posts: 62
Just did it last week in 03
Ptlm1013 is offline   Quote Quick Reply
Old 03-28-2013, 04:55 PM   #18
Jeeper
 
jgorm's Avatar
 
Join Date: May 2010
Location: San Diego
Posts: 1,918
clogged cats?
__________________
my 06 LJ rubicon
2.5" SL, 1" BL, DIY highline, 35s with double beadlocks.
jgorm is offline   Quote Quick Reply
Old 03-31-2013, 06:41 AM   #19
Newb
 
Join Date: Oct 2012
Posts: 6
could be brakes..I have a 05 unlimited auto 456 and 35s same type of issues, but my problem is my rear brakes. guy who owned it wheeled it got mud all over the drivetrain and just let it sit. the brake pads needed to be changed so the piston was pushed out while sitting now its seizing up and wont open enough off the rotor. maybe something to look into if its just starting.
TrailRig is offline   Quote Quick Reply
Old 04-01-2013, 08:18 AM   #20
Newb
 
Join Date: Mar 2013
Posts: 4
Quote:
Originally Posted by Kota7x View Post
Works on my 2004. Dad's 1998 TJ does it.
Cool. I'll have try a few others we have around here. Thought for sure they disco'd that in '98.
RypH is offline   Quote Quick Reply
Old 04-01-2013, 08:42 AM   #21
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
Quote:
Originally Posted by TrailRig View Post
could be brakes..I have a 05 unlimited auto 456 and 35s same type of issues, but my problem is my rear brakes. guy who owned it wheeled it got mud all over the drivetrain and just let it sit. the brake pads needed to be changed so the piston was pushed out while sitting now its seizing up and wont open enough off the rotor. maybe something to look into if its just starting.


Thanks but that's not it. I power wash my jeep after every trip to get the mud off it. Plus it runs great all over town except when going up hills. (freeway hills)
Paceman is offline   Quote Quick Reply
Old 04-01-2013, 05:15 PM   #22
Supporting Member

WF Supporting Member
 
Join Date: Dec 2011
Location: Under my Jeep in beautiful upstate N.Y.
Posts: 2,904
Quote:
Originally Posted by jgorm View Post
clogged cats?
Just what I was going to post.Nice work beating me to it
1jeeplvr is offline   Quote Quick Reply
Old 04-02-2013, 02:29 PM   #23
Jeeper
 
ropin321620's Avatar
 
Join Date: Apr 2009
Location: Amarillo, Texas
Posts: 133
Mine started the same thing Sunday. Couldn't get over 60 mph. Never had any problems like that before. If ya figure it out let me know. I've been looking at mine and can't find anything amiss on it.
ropin321620 is offline   Quote Quick Reply
Old 04-02-2013, 11:09 PM   #24
Jeeper
 
InvisiblePants's Avatar
 
Join Date: Jan 2013
Location: Charleston, SC
Posts: 517
Images: 11
Quote:
Originally Posted by ropin321620 View Post
Mine started the same thing Sunday. Couldn't get over 60 mph. Never had any problems like that before. If ya figure it out let me know. I've been looking at mine and can't find anything amiss on it.
Read up on clogged catalytic converters. There have been quite a few threads lately.
InvisiblePants is offline   Quote Quick Reply
Old 04-03-2013, 11:17 PM   #25
Newb
 
Paceman's Avatar
 
Join Date: Aug 2012
Location: Scottsdale
Posts: 8
Images: 1
I have someone to look at it next week. I will give everyone an update regardless the out come.
Paceman is offline   Quote Quick Reply
Old 04-03-2013, 11:37 PM   #26
Jeeper
 
Join Date: Dec 2012
Posts: 2,631
Not to hijack the OP thread, but to those who have problems going up hills, try this: increase your speed prior to hitting the hill. Transport drivers do it all the time to maintain momentum. 85% of the time I dont have to downshift to make it up. Just do it safely and watch out for your law enforcement of course
RevCo666 is offline   Quote Quick Reply
Old 07-07-2013, 01:06 PM   #27
Newb
 
chambofam's Avatar
 
Join Date: May 2013
Posts: 1
im having the same problem with my 05 RUBI LJ now. The same hills i normally drive, but now it will slow waaay down, downshift, and not really pick speed back up. I have heard tranny filter too. Did you ever find a fix to this problem? TIA
chambofam is offline   Quote Quick Reply
Old 07-07-2013, 01:28 PM   #28
Jeeper
 
Tomdata's Avatar
 
Join Date: Mar 2013
Posts: 396
Plugged cat
Tomdata is offline   Quote Quick Reply
Old 07-08-2013, 07:01 AM   #29
Jeeper
 
tkfx's Avatar
 
Join Date: Aug 2012
Location: La Crescenta, CA
Posts: 988
Quote:
Originally Posted by jgorm View Post
clogged cats?
Checked this post to make sure someone mentioned it. Clogged cats will cause this issue. If a cat is clogged, and the jeep is under heavy load, like going up a hill, you will be faced with loss of power. This happened to me, I changed many things before I got to the cats.

Im 99% sure your jeep has the two mini cats right after the exhaust manifold, and the honeycomb inside will sometimes break apart and clog the hole. Now its odd that you are having this problem after 16k miles. Best I can say is to unbolt the exhaust system before the muffler, drop it down, and look inside each mini cat. You should see clean honeycombs, if not then thats probably your problem. Also, if the cats are the problem, you should still be clear of the 60k miles, 8 year warrenty on them.

Heres a link to my post about my problem, you should see pictures of the bad cats. http://www.wranglerforum.com/f5/how-...ad-236678.html

Im also somewhat skeptical about it being the cats because you aren't getting any engine codes. Regardless, its worth checking out!
tkfx is offline   Quote Quick Reply
Old 08-18-2014, 12:03 AM   #30
Rax
Newb
 
Join Date: Feb 2014
Posts: 5
Did anybody ever solve this? was it the clogged cats? im having the same problem with my 05 LJ but wouldnt the cat give you problems in every gear not just top out on highways?

Rax is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 09:13 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC