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Old Sep 19, 2012 | 03:57 PM
  #14671  
bhennessee1's Avatar
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From: Chickamauga Ga.
Year: 2000
Model: Cherokee
Engine: 4.0
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Originally Posted by bloddy mud
yes automatic. i really dont plan on runing 31's and what not. just woundering. i dont know hardly anything bout gearing is there a thread that can teach ya on how that stuff works. like smaller gearing used for what and bigger gearing used for what? like to learn
Lower gears (numerically higher are for bigger tires. For example stock gears in an auto are 3.55s and are perfect for stock to about 30 inches. 4.10s are good for 31s 4.56s are perfect for 33s an so on. These numbers wil change with different transmissions and transfer cases. A 3.55 gear is higher than a 4.56 gear. So numerical Lowe is higher and vise versa

Last edited by bhennessee1; Sep 19, 2012 at 04:01 PM.
Old Sep 19, 2012 | 04:25 PM
  #14672  
sycoglitch's Avatar
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From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
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Originally Posted by dukie564

i think it's more they can't HEAR the change
X2. Our engines are called little diesel by many due to the fact it sounds like a diesel engine under norm conditions
Old Sep 19, 2012 | 05:07 PM
  #14673  
bloddy mud's Avatar
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From: Goshen Ohio
Year: 1993
Model: Cherokee
Engine: I6
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so under great running condations the sound like desel engine? i thought that was just my lifters hammering away. sorry im a jeep newb
Old Sep 19, 2012 | 05:34 PM
  #14674  
salad's Avatar
Herp Derp Jerp
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From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
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Originally Posted by bloddy mud
so under great running condations the sound like desel engine? i thought that was just my lifters hammering away. sorry im a jeep newb
Actually that's what causes the noisr indeed... Hahaha
Old Sep 19, 2012 | 06:02 PM
  #14675  
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From: Cuyahoga Falls
Year: 1994
Model: Cherokee
Engine: 4.0l
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Originally Posted by dukie564

different manufacturer. All you need to know is Timken >>> All others
Timken is def not the best bearing company. I have gotten so many bad timken bearings out the box, I avoid timken
Old Sep 19, 2012 | 06:26 PM
  #14676  
SEREguy's Avatar
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From: Bismarck, ND
Year: 1999 and 1995
Model: Cherokee
Engine: 4.0
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Originally Posted by bloddy mud
so under great running condations the sound like desel engine? i thought that was just my lifters hammering away. sorry im a jeep newb
That is so true. I am a newb too, but my uncles jeep has 420,000 miles on the original engine, and trans. His spark plugs were so worn at one point, the jeep should not have been running at all. It sounded just like a diesel when he accelerated. New plugs pretty much fixed it.
Old Sep 19, 2012 | 06:35 PM
  #14677  
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From: Bismarck, ND
Year: 1999 and 1995
Model: Cherokee
Engine: 4.0
Default Grinds into reverse.

While I am on here I figured I would shoot another question out there. My 99 sport 5 speed grinds into reverse most of the time. I try the shuffle (shift into another gear before going into reverse) with no results. all other gears seem to shift as well as can be expected from a jeep with 126000 miles. No rear synchros in reverse as I understand it in the ax-15. I just ordered a pre-filled assembly clutch master cylinder and slave cylinder assembly. I also ordered a clutch kit. I figure it can't hurt, and I don't really know the life span of these clutch systems. Am I on the right track. The Master Cylinder is full of fluid and I don't see any leaks in the slave. I'm just thinking they got weak. Could it be a pressure plate issue? I just don't know if I wasted money ordering this stuff, I suppose I could return it. Truth be told, I actually enjoy working on my Jeeps and don't mind learning new things about them. I just wish I had the cash flow to upgrade them.
Old Sep 19, 2012 | 07:21 PM
  #14678  
SEREguy's Avatar
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From: Bismarck, ND
Year: 1999 and 1995
Model: Cherokee
Engine: 4.0
Default I think I found the noise

Originally Posted by SEREguy
I'm new here obviously, but have gotten a lot of valuable advice and diagnostics from the forums here. I have a 1999 Cherokee Sport, 5 Speed, with 126,000 miles. When it is cold there is no knocking sound heard at all, however, once it is at operating temp, there is a soft, but definately audible knocking. I can only hear it when sitting in the cab at a stop light or idling in a parking lot. The knocking doesn't seem to increase with rpms, and in fact I can't here it when the rpms are above idling at all. I have crawled all around the bottom of the jeep, and under the hood, and can't here it except in the cab. It's driving me nuts. Valves? Do I just need a tune up? Just asking for any advice.

Thanks.
I ended up playing around today, and think I narrowed down the knocking/ticking I hear in the cab. I think it is the evap purge solenoid. Under the hood if I get real close to it I can hear it ticking when the engine is at operating temp. I think it resonates to the canister possibly through the hose, and that is why I can only hear it at idle. Just thinking this could be it. I hope so anyway. Maybe someone else will find this helpful. I don't think it is a big issue, but let me know if I am wrong or should fix it right away.
Old Sep 19, 2012 | 07:44 PM
  #14679  
ol"blue's Avatar
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From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
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Originally Posted by SEREguy
I ended up playing around today, and think I narrowed down the knocking/ticking I hear in the cab. I think it is the evap purge solenoid. Under the hood if I get real close to it I can hear it ticking when the engine is at operating temp. I think it resonates to the canister possibly through the hose, and that is why I can only hear it at idle. Just thinking this could be it. I hope so anyway. Maybe someone else will find this helpful. I don't think it is a big issue, but let me know if I am wrong or should fix it right away.
That's normal for the solenoid.
Old Sep 19, 2012 | 07:57 PM
  #14680  
sycoglitch's Avatar
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Joined: Sep 2010
Posts: 12,692
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From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
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Originally Posted by SEREguy

I ended up playing around today, and think I narrowed down the knocking/ticking I hear in the cab. I think it is the evap purge solenoid. Under the hood if I get real close to it I can hear it ticking when the engine is at operating temp. I think it resonates to the canister possibly through the hose, and that is why I can only hear it at idle. Just thinking this could be it. I hope so anyway. Maybe someone else will find this helpful. I don't think it is a big issue, but let me know if I am wrong or should fix it right away.
That's happens. Replacing an old gas cap helps quiet that a little. Eventually you'll get the small evap leak CEL
Old Sep 19, 2012 | 09:03 PM
  #14681  
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Joined: Sep 2012
Posts: 7
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From: Bismarck, ND
Year: 1999 and 1995
Model: Cherokee
Engine: 4.0
Default evap noise

Thanks for the info. I appreciate it
Old Sep 19, 2012 | 09:43 PM
  #14682  
salad's Avatar
Herp Derp Jerp
Premium Member
 
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Default

Originally Posted by SEREguy
While I am on here I figured I would shoot another question out there. My 99 sport 5 speed grinds into reverse most of the time. I try the shuffle (shift into another gear before going into reverse) with no results. all other gears seem to shift as well as can be expected from a jeep with 126000 miles. No rear synchros in reverse as I understand it in the ax-15. I just ordered a pre-filled assembly clutch master cylinder and slave cylinder assembly. I also ordered a clutch kit. I figure it can't hurt, and I don't really know the life span of these clutch systems. Am I on the right track. The Master Cylinder is full of fluid and I don't see any leaks in the slave. I'm just thinking they got weak. Could it be a pressure plate issue? I just don't know if I wasted money ordering this stuff, I suppose I could return it. Truth be told, I actually enjoy working on my Jeeps and don't mind learning new things about them. I just wish I had the cash flow to upgrade them.
I'm not sure on what to fix but I can tell you with certainty you're on the right track. Clutch is not completely releasing if you grind into reverse.
Old Sep 19, 2012 | 10:34 PM
  #14683  
xj_maniac_newb's Avatar
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Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.
Default

Originally Posted by SEREguy
While I am on here I figured I would shoot another question out there. My 99 sport 5 speed grinds into reverse most of the time. I try the shuffle (shift into another gear before going into reverse) with no results. all other gears seem to shift as well as can be expected from a jeep with 126000 miles. No rear synchros in reverse as I understand it in the ax-15. I just ordered a pre-filled assembly clutch master cylinder and slave cylinder assembly. I also ordered a clutch kit. I figure it can't hurt, and I don't really know the life span of these clutch systems. Am I on the right track. The Master Cylinder is full of fluid and I don't see any leaks in the slave. I'm just thinking they got weak. Could it be a pressure plate issue? I just don't know if I wasted money ordering this stuff, I suppose I could return it. Truth be told, I actually enjoy working on my Jeeps and don't mind learning new things about them. I just wish I had the cash flow to upgrade them.
Definitely not wasted money, at 126,000 you probably have the stock MC and SC, so probably about time you replace them. Its pretty normal for the SC and MC to go out, especially so on the ax5's but also on the ax15 as well. My jeep does the same thing in reverse, just grind it a time and it goes right in Nothing to really be concerned about to be honest, so dont rush yourself doing it. My Master cylinder is in such bad shape that if i get into some stop and go traffic for a while it'll have a 'errrrk' audible from outside and inside the jeep. So if mines still functioning.. yours should be ok for a little while longer But i would still definitely replace them.. Worth your time and money if you feel like doing it.
Old Sep 19, 2012 | 10:42 PM
  #14684  
JustinTurney's Avatar
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Model: Cherokee
Default 1990 Jeep starts then stalls after key is released

My 1990 Cherokee starts while I am holding the key in the start position, roughly might I add, then it stalls when the key is relased to the on position. I replaced my ignition switch and the problem was still not solved. When taking the old switch off, I noticed that one of the wires on a terminal had slightly melted and burnt up the terminal. Is it possible that this wire shorted out and is now ruined and not allowing power to flow through it? If not, does anybody have any other sugestions? I have been stumped for a week now and any help would be much appriciated.
Old Sep 19, 2012 | 10:44 PM
  #14685  
DieselD's Avatar
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Joined: Apr 2011
Posts: 4,825
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From: Indianapolis
Year: '99 and '91
Model: Cherokee
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Yea I'd say a melted or burnt wire is a good place to start.



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