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Well, I'm making this post to help some of the newcomers understand what they have, and provide a few great resources. This isn't a guide that has my advice, or my opinions...just straight facts about whats in your Jeep.

Engines:

6 Cylinders
4.2 L AMC 258 was used from 1987 to 1991
4.0 L AMC 242 from 1991-1995

4 Cylinders
2.5 L AMC 150

Transmissions:
6 Clyiners

Manual-
Peugeot BA-10 1987-1989
Aisin AX-15 1988-1995

Auto-
TF999 1987-1992 Non lock up
TF999 1992-1995 Electronic Shift
The electronic shift years could be wrong.

4 Cylinders

Manual
Aisin AX-5 1987-1995

Automatic
TF904 1994-1995

Transfer Case
Some YJ's from 1987 came with the NP207, the rest came with the NP231

Towing Capacity:
Frame is rated to pull 2,200 pounds.

Axles
Front
D30

Rear
D35

Differential Gear ratios
6 Cylinders
3.07 or 3.55
From everything I've see, these are the most common. If someone could
throw some more numbers out there with years, that would be great.

4 Cylinders
4.10

AN EXCELLENT RESOURCE FOR INFO, AND ENGINE/TRANNY SWAP INFO:
Novak Jeep Conversions - Home

GEAR RATIO GUIDE:
Jeep Wrangler Gear Ratio Guide

LIFT REVIEWS:
http://www.wranglerforum.com/f8/yj-lift-reviews-25156.html

JEEP PARTS:
Jeep Parts, Jeep Accessories, & Jeep Tops
Jeep Parts, Jeep Accessories & Jeep Soft Tops From The Jeep Parts Experts - Quadratec

HOW DOES MY HEAT WORK?
http://www.wranglerforum.com/f8/yj-heating-system-explained-68618.html

MY CHECK ENGINE LIGHT IS ON. OH CRAP.
http://www.wranglerforum.com/f8/check-engine-light-68329.html

MY STEERING IS GOOFY. WHAT TO DO?
http://www.wranglerforum.com/f8/how-i-tightened-up-my-steering-71025.html

MY SEATS SUCK! WHERE CAN I FIND CHEAP REPLACEMENTS:
http://www.wranglerforum.com/f8/these-seats-bolt-right-in-and-are-cheap-60648-2.html#post796754


There are a few things that could be wrong in here, and if you see anything wrong please say so. Also, if there are some other threads some people would find useful from the past, please put them in a comment!

Hope this helps some people out! :punk:
 

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Thanks for posting this Mike. Most info I knew from previous web searches and looking at my YJ, but you gave me some info I didn't know. Very cool!!
 
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I am in need of a engine control unit - are you able to helt me?
My Car is a jeep wrangler 2,5L from 1995 (4 cylinder) - chassis nr 1J4FYN9PXSP274844
Car is registrered in Denmark - imported from Germany in 2001

The unit that is defekt has the following numbers printed on it:
56028 830 AHF201J011 06/03/95

I have tried to contact several spare part dealers but the response is they dont have that part or they dont know which car it is from the number I have given...
 

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Awesome Post .
 

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Discussion Starter #9
I noticed the TJ thread had something similar, so I suppose the YJ thread might need it as well.
 

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I am in need of a engine control unit - are you able to helt me?
My Car is a jeep wrangler 2,5L from 1995 (4 cylinder) - chassis nr 1J4FYN9PXSP274844
Car is registrered in Denmark - imported from Germany in 2001

The unit that is defekt has the following numbers printed on it:
56028 830 AHF201J011 06/03/95

I have tried to contact several spare part dealers but the response is they dont have that part or they dont know which car it is from the number I have given...
Welcome to the fourm if you could post a pitcher of the bad unit we might be able to tell you what it is
 

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Help! Got my rear differential drained and a new gasket on, but now I can't get the fill plug out to put new gear oil in it! Any suggestions?

Tried using a 3/8 breaker bar but it's not budging!

88 Wrangler 2.5
 
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