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Got a new XJ

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Old Jul 14, 2009 | 10:28 PM
  #1  
1SickCherokee's Avatar
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Model: Cherokee
Default Got a new XJ

So i sold my 96 xj becuase it was 2 wheel drive and got a 1990 cherokee laredo 4 wheel drive . I have a few questions. Why is this thing so slow? It has the 4.0 straight 6 and so did my old one and this one just has no *****. Could it be the fuel filter? Or what can it be? Next question. The 4 wheel drive goes into 4 lo and 4 hi and all that but sometimes it is hard to get back into 2 wheel drive. I think the vaccum connection is not that good. It has 2 hoses that run into one peice then that one peice goes onto 2 studs. Should i just run the hoses directly into the stud? Also my last question. There is a switch that says trans and then underneath it if you push the switch up it says for power and if you push it down it says for comfort. What is that all about? Thanks
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Old Jul 15, 2009 | 03:40 AM
  #2  
Snowcats95's Avatar
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From: Oregon
Year: 1993
Model: Cherokee
Engine: 4.0
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One way to unleash some power is a good tune-up (plugs, wires, etc.). Did that couple months ago and the difference was like night and day.
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Old Jul 15, 2009 | 07:41 AM
  #3  
OnlyInMyXJ22's Avatar
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From: Brighton, MI
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1: Your '96 was a High Output 4.0L while the '90 is a Renix 4.0L. That will make a difference.
2: There could be a crack in the line somewhere, or your linkage needs a greasing/adjustment so that it can fully move back into position.
3: The Renix XJ's got a Power/Comfort option for the transmission shift points. Comfort allows for a lower RPM shift point to make it more comfortable/non-noticeable shift while the Power allows it to shift at higher RPM for a more of a sporty acceleration/ride.

The Power/Comfort option was taken away after the '90 model, along with the Renix 4.0L, and the transmission was just hardwired from the factory in Power. So your '96 XJ was set in Power which could also have an effect on why the '90 has "no *****" along with having a Renix. Also, you will need to factor in the fact that you went from a 2wd to a 4wd.
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Old Jul 15, 2009 | 05:44 PM
  #4  
xjbones's Avatar
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Year: 91 with lots of 01' parts
Model: Cherokee
Engine: 01' 4.0L
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i have a 91' and it has the comfort/power button! feels like my tranny is slipping when im in comfort and shifts great in power. it never leaves the power setting in my jeep.

were they both autos or manual or one of each?....a manual cherokee will smoke an auto

Last edited by xjbones; Jul 15, 2009 at 05:46 PM.
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Old Jul 15, 2009 | 06:21 PM
  #5  
New2Jeeps42's Avatar
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Year: 1995
Model: Cherokee
Engine: 4.0L 4wd
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i think the power/comfort dealio is auto only. as it makes no sense to have that function on a manual, because your in total control of what rpms it shifts at.
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Old Jul 15, 2009 | 06:41 PM
  #6  
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Year: 99 xj
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Engine: 4.0L
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dont forget the vaccum 4x4 ingage .. a sure lock wil solve this .and works great i had one om my 91
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Old Jul 15, 2009 | 10:05 PM
  #7  
Abovetimberline's Avatar
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From: Chico,ca
Year: 89
Model: Cherokee
Engine: 4.0
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Have you done a compression check on it,it should be at least 120 to 150,the trany switch is for when you want to pick-up speed quicker,in the power mode it shifts at a higher rpm,i think the owners manual says use it when towing or getting on freeway,I just use it when I need it.
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Old Jul 17, 2009 | 11:40 AM
  #8  
1SickCherokee's Avatar
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Originally Posted by jonesy72
dont forget the vaccum 4x4 ingage .. a sure lock wil solve this .and works great i had one om my 91
Whats a "sure lock"? And they were both autos
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