Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Lack of power, almost stalls

Old 10-02-2011, 08:45 PM
  #1  
Senior Member
Thread Starter
 
zak873's Avatar
 
Join Date: Sep 2011
Location: lake hartwell
Posts: 880
Likes: 0
Received 0 Likes on 0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0 i6
Default Lack of power, almost stalls

Yesterday (saturday), I was driving home from the motocross track, when my jeep started to slow down, lug a bit, and the gas pedal got stiff. I left off the gas, then pushed the pedal back down, and it was fine. No problems for about, 5 miles and then it did it again. I then pulled into a subdivision, checked my oil, for leaks, and any other signs of something, but turned up nothing. So, today, I thought maybe it was something binding in the transmission due to low fluid, so I drained the old fluid, and added new. Also, I put in new spark plugs. Took it for a drive, and it did it again, but I didnt notice it as much, but still noticeable. I babied it home, then as I parked it in the garage, I put it in neutral, and sat there for a minute. As I sat there, it idled down, really low, to about 100 or 200 rpm, then all of a sudden, revved back up to 700-1000 rpm. I thought something was binding in the transmission, but I don't really think that its the tranny. I'm going to ohm test the injectors, and TPS tomorrow. That's my only clue as of where to start. I really hate to take it to the mechanic, as I'm pretty mechanically inclined. I know I didnt describe the symptoms very well, but I have trouble putting them into words. I figured an injector being clogged, or a misfire, would be more noticeable throughout all rpms and gears. Oh, and I notice it most in 1st, 2nd, and 4th gear, at around 1500-2000 rpm. As it lugs and slows down, if you don't let off, and keep on the gas, it has very little power, but eventually picks back up with the power again. And sometimes, I notice it more sluggish trying to move in 1st gear, then normal. I know 33's with 3.07's aren't the best in 1st, but I know that the sluggishness I notice, isn't the average I experience. If anyone has any idea where to start, or any clues to as what may be the problem, I'd gladly appreciate it

1995, 4.0, 5 speed, 6" lift, 33's, and 3.07's, with 141k miles.



EDIT: This may sound weird, but I drove it for the first time yesterday in the cooler weather (40-50 degrees), when its normally been in the 80's here. And It didn't happen till I drove it in colder weather. My engine temperature is around 210 most of the time, sometimes between 210 and the red when I'm wheeling. Is this normal?

Last edited by zak873; 10-02-2011 at 08:51 PM.
zak873 is offline  
Old 10-27-2011, 01:00 PM
  #2  
Newbie
 
Join Date: Sep 2011
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

check to see throttle valve or sensors could be causing you problems. If your intake butterfly valve were hanging up it could cause the pedal to get hard.


Originally Posted by zak873 View Post
Yesterday (saturday), I was driving home from the motocross track, when my jeep started to slow down, lug a bit, and the gas pedal got stiff. I left off the gas, then pushed the pedal back down, and it was fine. No problems for about, 5 miles and then it did it again. I then pulled into a subdivision, checked my oil, for leaks, and any other signs of something, but turned up nothing. So, today, I thought maybe it was something binding in the transmission due to low fluid, so I drained the old fluid, and added new. Also, I put in new spark plugs. Took it for a drive, and it did it again, but I didnt notice it as much, but still noticeable. I babied it home, then as I parked it in the garage, I put it in neutral, and sat there for a minute. As I sat there, it idled down, really low, to about 100 or 200 rpm, then all of a sudden, revved back up to 700-1000 rpm. I thought something was binding in the transmission, but I don't really think that its the tranny. I'm going to ohm test the injectors, and TPS tomorrow. That's my only clue as of where to start. I really hate to take it to the mechanic, as I'm pretty mechanically inclined. I know I didnt describe the symptoms very well, but I have trouble putting them into words. I figured an injector being clogged, or a misfire, would be more noticeable throughout all rpms and gears. Oh, and I notice it most in 1st, 2nd, and 4th gear, at around 1500-2000 rpm. As it lugs and slows down, if you don't let off, and keep on the gas, it has very little power, but eventually picks back up with the power again. And sometimes, I notice it more sluggish trying to move in 1st gear, then normal. I know 33's with 3.07's aren't the best in 1st, but I know that the sluggishness I notice, isn't the average I experience. If anyone has any idea where to start, or any clues to as what may be the problem, I'd gladly appreciate it

1995, 4.0, 5 speed, 6" lift, 33's, and 3.07's, with 141k miles.



EDIT: This may sound weird, but I drove it for the first time yesterday in the cooler weather (40-50 degrees), when its normally been in the 80's here. And It didn't happen till I drove it in colder weather. My engine temperature is around 210 most of the time, sometimes between 210 and the red when I'm wheeling. Is this normal?
marked1 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
19
05-07-2019 06:15 AM
nrwphoto
Modified XJ Cherokee Tech
20
08-23-2018 07:24 PM
Jamesmon4
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
1
08-16-2016 09:04 PM
Paco182
Fabrication & builders section.
12
10-12-2015 05:49 PM
TaylorLG
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
4
09-13-2015 08:29 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Lack of power, almost stalls


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description: