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.

1990 jeep 4.0 popping and hesitating

Thread Tools
 
Search this Thread
 
Old 02-24-2011, 09:59 PM
  #16  
Junior Member
 
Dillbag's Avatar
 
Join Date: Dec 2010
Location: Southern California
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0 Inline 6
Default

I would check your CPS as well as your cat converters, mine had this exact problem before I had to get it smogged and I replaced my cat converters and CPS and it fixed all of the problems. This was great because I was worried it was my T Case
Old 02-24-2011, 11:41 PM
  #17  
Junior Member
 
cherokeeon49s's Avatar
 
Join Date: Sep 2010
Location: Jacksonville, FL
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0, rv cam, fresh rebuilt
Default

I would look at your CPS as the first culprate. Seriously The CPS's on these Jeep's cause about 1/3 of no start or bad running problems in my experience. Buy a new one( they wear out anyways, and when they die, you Jeep won't run) they're like 50 bucks at advance. Make sure you clean off the connector and check the wires. Tighten the bolts evenly and try to get it as clse to the flywheel as you can. These things are so fragile I keep a spare in my tool box now haha. If that does't work, then you can go from there, but I would start at the CPS first
Old 02-24-2011, 11:49 PM
  #18  
Junior Member
Thread Starter
 
playin4funami's Avatar
 
Join Date: Feb 2011
Location: Nebraska
Posts: 67
Likes: 0
Received 0 Likes on 0 Posts
Year: 1990, 92,92,92
Model: Cherokee
Engine: 4.0's L6
Default

Thanks guys I will check out the cps better tommorrow!

What's a cat,lol. don't have one bro!

it started a little after about a week then got worse fast, I have been tinkering and wiggling and playing with it on and off as weather allows without freezing my butt off outside trying to fiqure this out. It fires right up every time and runs great sitting in the driveway but then acts like a loaded up carb when I try to go.
Old 02-24-2011, 11:52 PM
  #19  
Senior Member
 
Modestmike's Avatar
 
Join Date: Jan 2011
Location: Los Fresnos, Texas
Posts: 707
Likes: 0
Received 0 Likes on 0 Posts
Year: 2k
Model: Cherokee
Engine: 4.0
Default

^shhhhhh.....
You must mean you're a dog lover huh?
Cats are cool. Make great pets and they even keep you in check...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
talbert
Jeep Builds
66
07-28-2017 09:03 AM
Cane
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
40
08-26-2015 12:08 AM
cbs_24
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
08-23-2015 11:30 AM
Trail-Trekker
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
08-20-2015 06:26 PM

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


Quick Reply: 1990 jeep 4.0 popping and hesitating



All times are GMT -5. The time now is 02:32 AM.