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Old Nov 4, 2013 | 11:27 AM
  #36931  
DESERTXJ206's Avatar
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From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
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Originally Posted by VTJeep

Ok, here's a super cheap or free idea:

With a piece of ~18g wire add a ground wire directly from o2 sensor to chassis- make sure it's clean metal you attach to. Strip 2-3 inches of the wire and wrap it around the slightly backed out o2 sensor and retighten it. Same for chassis side.
Now on the subject of o2's, there's a chance this needs to be replaced.. If you've refreshed all grounds (check Cruiser54's Renix tips) and replaced sensors then move to fuel delivery. Check the filter, if there's debris, check the tank. Sorry I I'm repeating things you already did- I'm on the app :/
Why or how would an o2 cause a sudden jerk that last less than a second? I thought they are more of a air/fuel adjuster.

I replaced the entire sending unit in the tank about 2 years ago with a "Airtex" unit. It came with new everything, bracket, screen, pump all complete to drop in. I cleaned the tank out spotless before I reinstalled.

The reason I had to replace my original pump was because the gas ate through the rubber line after the screen that goes into the pump and it had debris of rubber all in the tank.
Old Nov 4, 2013 | 11:36 AM
  #36932  
VTJeep's Avatar
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From: 802
Year: 99
Model: Cherokee
Engine: 4.0
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Originally Posted by DESERTXJ206
Why or how would an o2 cause a sudden jerk that last less than a second? I thought they are more of a air/fuel adjuster.
It measure trim levels. If it sweeps out of range it can cause fuel deliver to be interrupted.
Old Nov 4, 2013 | 12:06 PM
  #36933  
salad's Avatar
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From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
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O2 shouldn't cause bucking that bad, but if it's original it's always worth a look.

I'd suspect that marvelous Airtex pump...
Old Nov 4, 2013 | 12:19 PM
  #36934  
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From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
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Originally Posted by salad
O2 shouldn't cause bucking that bad, but if it's original it's always worth a look.

I'd suspect that marvelous Airtex pump...
I double this. I dont trust airtex all too much

Last edited by sycoglitch; Nov 4, 2013 at 01:10 PM.
Old Nov 4, 2013 | 01:12 PM
  #36935  
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From: Springfield Virginia
Year: 1998
Model: Cherokee
Engine: 4.0
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Got my buddy a factory fog light switch from the jy out of, if I remember correctly, a 94 Cherokee. Does anyone know the wiring diagram for it? We're wiring in aftermarket fogs with a relay.
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Old Nov 4, 2013 | 01:24 PM
  #36936  
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From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
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Originally Posted by ThatPurpleXJ
Got my buddy a factory fog light switch from the jy out of, if I remember correctly, a 94 Cherokee. Does anyone know the wiring diagram for it? We're wiring in aftermarket fogs with a relay.
Black is ground. Either green wire could be 12 volts and the other the accessory, it will just depend on how the switch is orientated. Get a multimeter and play with it on the battery.
Old Nov 4, 2013 | 01:37 PM
  #36937  
ccooper1234's Avatar
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From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
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Originally Posted by VTJeep

Ok, here's a super cheap or free idea:

With a piece of ~18g wire add a ground wire directly from o2 sensor to chassis- make sure it's clean metal you attach to. Strip 2-3 inches of the wire and wrap it around the slightly backed out o2 sensor and retighten it. Same for chassis side.
Now on the subject of o2's, there's a chance this needs to be replaced.. If you've refreshed all grounds (check Cruiser54's Renix tips) and replaced sensors then move to fuel delivery. Check the filter, if there's debris, check the tank. Sorry I I'm repeating things you already did- I'm on the app :/
I replaced the o2 sensors on mine with NGKs and I still got the jerk. I really think it was the wrong transmission fluid that caused my Jeep to jerk
Old Nov 4, 2013 | 01:40 PM
  #36938  
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From: Des Moines, IA
Year: 1998
Model: Cherokee
Engine: 4.0L
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What would stroking the 4.0 do to the driving feel? Would the longer stroke reduce the response initially? Also I have an exhaust on, if I did stroke it would it make my car unbearably loud?
Old Nov 4, 2013 | 01:43 PM
  #36939  
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Year: 1998
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Originally Posted by ridinclassic
What would stroking the 4.0 do to the driving feel? Would the longer stroke reduce the response initially? Also I have an exhaust on, if I did stroke it would it make my car unbearably loud?
*Jeep not car. Just saying
Old Nov 4, 2013 | 02:11 PM
  #36940  
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From: Parham, ON
Year: 1999
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Engine: 4.0L OBD-II
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Originally Posted by ridinclassic
What would stroking the 4.0 do to the driving feel? Would the longer stroke reduce the response initially? Also I have an exhaust on, if I did stroke it would it make my car unbearably loud?
Do you even know what a stroker is? Serious question.
Old Nov 4, 2013 | 02:24 PM
  #36941  
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From: Des Moines, IA
Year: 1998
Model: Cherokee
Engine: 4.0L
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[
Originally Posted by ccooper1234
*Jeep not car. Just saying
Cool beans, that was super helpful
Originally Posted by salad
Do you even know what a stroker is? Serious question.
all I know is that involves a different crankshaft with a longer stroke. I dont know why I'm getting sarcastic answers when I've seen question with much more stupidity answered on this forum.
Old Nov 4, 2013 | 02:27 PM
  #36942  
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From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
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Originally Posted by ridinclassic
[
Cool beans, that was super helpful
all I know is that involves a different crankshaft with a longer stroke. I dont know why I'm getting sarcastic answers when I've seen question with much more stupidity answered on this forum.
Not sarcasm, bud. Salad is very knowledgeable, but he needs to know how far to break down the info. You may not know what a stroker is, or you may be an engine builder. We get all kinds here, and we don't know you yet.
Old Nov 4, 2013 | 02:30 PM
  #36943  
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From: Des Moines, IA
Year: 1998
Model: Cherokee
Engine: 4.0L
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Originally Posted by NewKindOfClown
Not sarcasm, bud. Salad is very knowledgeable, but he needs to know how far to break down the info. You may not know what a stroker is, or you may be an engine builder. We get all kinds here, and we don't know you yet.
I do all of the fixes on my JEEP besides engine and drive train stuff. I'm only 18 but I'm trying to learn and it irritates me when people condescend so sorry for that.
Old Nov 4, 2013 | 02:51 PM
  #36944  
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From: Yelm, WA
Year: 97
Model: Cherokee
Engine: 4.0
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Anybody have any issues with the transfer case handle vibrating? Mine vibrates back and forth when I'm coming to a stop and it's really annoying. Is there a way to tighten it up or something?
Old Nov 4, 2013 | 02:59 PM
  #36945  
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From: South Mills, NC
Year: 1998
Model: Cherokee
Engine: Rebuilt 4.0L I6
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Originally Posted by ridinclassic
I do all of the fixes on my JEEP besides engine and drive train stuff. I'm only 18 but I'm trying to learn and it irritates me when people condescend so sorry for that.
I know how you feel, I'm 19 and people condescend me all the time.



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