No power - 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 10-28-2010, 03:35 PM   #1
Jeeper
 
Join Date: Mar 2010
Posts: 37
No power

I have a 98 4.0 5 speed 3.73 Sahara I purchased for about nothing and the engine was blown. I put a used engine out of a 97 XJ I believe and it runs every well. I recently replaced the throttle positioning sensor because I got a check engine code of low input voltage and the engine would cut off. The cut off problem stopped and no check engine light is on. My jeep has no power, will not turn more than about 4 to 4.5k Rpm and on the interstate will not go over about 75MPH. I am thinking the converter may be stopped up because the chassis has 152,xxx on it and it was completely stock. If anyone has any ideas let me know.

lodmccloud is offline   Quote Quick Reply
Old 10-28-2010, 03:46 PM   #2
IITYWTMWYBMAB

WF Supporting Member
::WF Administrator::
 
4Jeepn's Avatar
 
Join Date: Apr 2005
Location: Florence, KY
Posts: 10,268
Images: 5
did you install the xj computer as well?

__________________
79.96.85.00.01.97.00.97.93.97.95.94
CJ.XJ.CJ. TJ. TJ.ZJ. TJ.TJ. ZJ.ZJ.YJ. XJ
4Jeepn is offline   Quote Quick Reply
Old 10-28-2010, 03:50 PM   #3
Jeeper
 
Join Date: Mar 2010
Posts: 37
Used my computer and flywheel since mine was 5 speed. The computer is from a wreck and had to be reflashed because my jeep has the smart key and my computer was fried during the engine install. Though that is another story. The jeep had more power than this before the new throttle positioning sensor. I am wondering if that could be the problem, but it throws no codes. I was thinking the converter but no smell, rattle, or overheating.
lodmccloud is offline   Quote Quick Reply
Old 10-28-2010, 04:22 PM   #4
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,230
Images: 2
Are you certain that when you installed the new TPS that the little mechanical tab that protudes out of the throttle body was properly inserted into the slot it mates with in the new TPS? You have to rotate the new TPS slightly before installing it so the tab and slot align with each other and then while holding it so the tab doesn't slip out of its slot, slightly rotate the TPS back so its mounting holes line up with those in the throttle body.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 10-28-2010, 05:00 PM   #5
Jeeper
 
Join Date: Mar 2010
Posts: 37
Actually I am certain that it is installed correctly because I took it off once because I noticed to power loss very quickly. I reinstalled it and still the same yes two t-20 torx bolts and when I put it back on I looked to see if I could have it 180 degrees out or off the little tab that sticks out. It runs and takes fuel fine sitting but has no power going down the road, third gear to pull hills. It has 235/75/15's on it so no big tire to kill it.
lodmccloud is offline   Quote Quick Reply
Old 10-28-2010, 05:06 PM   #6
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,230
Images: 2
Your catalytic converter clogging thought would be the next thing I'd explore then. Any muffler shop can perform a quick inexpensive, if not free, pressure test on it to see if it is clogged or not. I would look for a small independent muffler shop to take it to, not a big chain muffler shop like Midas who will likely overcharge you.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 10-28-2010, 05:16 PM   #7
Jeeper
 
jdhallissey's Avatar
 
Join Date: Aug 2008
Location: Gurnee,IL
Posts: 5,104
Send a message via AIM to jdhallissey
I like the hammer to the cat trick better jerry lol. Gently tap the cat with the hammer and see if hear things rattling in it.
__________________
Know nothing SPEAK on everything

Quote:
Originally Posted by ccain View Post
Isn't the JK just a rebodied PT Cruiser?!

Quote:
Originally Posted by coyote_94yj
Just a few more inches Red. You can take it.


If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
jdhallissey is offline   Quote Quick Reply
Old 10-28-2010, 05:20 PM   #8
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,230
Images: 2
A clogged cat won't necessarily rattle though.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 10-28-2010, 08:54 PM   #9
Jeeper
 
Join Date: Mar 2010
Posts: 37
I intend to go by a muffler shop soon. Just been busy and have other things to work on. After this is fixed I can finally put some tires on it so it does not look funny. Three inch lift and two inch body lift with 235/75/15 cooper classics on Boyd Coddington wheels. If I put a set of 33's on it the way it is it would not pull out of the driveway.
lodmccloud is offline   Quote Quick Reply
Old 10-31-2010, 02:09 AM   #10
Jeeper
 
Join Date: Mar 2010
Posts: 37
Took it to a local muffler shop friend of the family type place. He said " I do not see how it will even run". It has a stopped up converter and a set of baffles crushed back in the muffler from a piece of converter coming loose during a backfire. I will let yall know on Tuesday if it helps
lodmccloud is offline   Quote Quick Reply
Old 11-02-2010, 07:26 PM   #11
Jeeper
 
Join Date: Mar 2010
Posts: 37
Wow had new cat and muffler put on and fixed the two broke exhaust hanger for a mere two hundred bucks. It is like driving a new vehicle at least power wise. I always just thought it was a little sick on the power side but I guess it has had a stuffed up exhaust since I got it. Now If I can figure out what my vibration problem is from 25-55 It will be just like a new vehicle.
lodmccloud is offline   Quote Quick Reply
Old 11-02-2010, 11:10 PM   #12
Jeeper
 
Join Date: Oct 2010
Posts: 123
Vibration? Uneven worn tires? I had a ford f150 that the tires had started to wear uneven (alignment and cheap tires)....and it would vibrate quite bait at all speeds. Put new tires on and drive like a charm.

Shokker 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:
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Power tools or Hand tools? Jeepin9910 Off-Topic 12 10-26-2010 01:16 PM
2001 TJ - Auxiliary Power (Switched) - Problem jordan.cook TJ General Discussion Forum 10 12-22-2009 08:16 AM
intermittant power to fuel pump skeeter General Jeep Discussion 4 02-08-2009 09:22 PM
Linear amp Question silvergoat Communications and Electronics 19 11-07-2008 06:11 PM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 11:08 PM.



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