I have a 99 Sport with a 5 speed. What is my gear ratio? Don't 5 speeds and automatics have different ratios? Here is my tag from the front diff.

 

Not buying that one, man.
My 88 starts just fine but the 89 has an issue I'm trying to correct.

Fuel system? Ya maybe I should try changing the filter.

 

I've got both. Check my sig for the difference.

 

Thanks. Ever tried to replace just the front? I'm having a hard time finding an axle out of a manual. Might have to get a 3.55 front and rear and put in it.Seems like a fairly large jump in gear ratio.

 

just real quick, been reading alot of conflicting things lately.

the 2.5l, pre 91 was the only engine to have throttle body injection, right? the 4.0 was MPI from the get-go yeah?

also, you guys have been confusing the hell out of me. when everyones talking about the open/closed radiator setup and posting pictures.

the 2.5l doesn't have the pressurized system. has a radiator cap and an overflow bottle next to the air box. just putting that out there. figure it'll save someone some time.

i spent a bunch of time trying to figure out what the PO did to my jeep!

 

I'll try to keep it simple for you:

The AMC 242(4.0) has had Multi-point fuel injection from the first time it was used in 1987.

The 2.5L was TBI from 87-90 and switched over to MPFI in 91.

I'm pretty sure the only XJs that had a closed loop cooling system were the "Renix" era ones with the 4.0(probably had a LOT to do with Renault/Benix being the designers of the fuel injection system on them)

General rule of thumb is: If it has a radiator cap, its NOT a closed cooling systme, if it doesn't it is a closed system

To your last question, if its anywhere as near as bad as my XJ, you'll be finding stupid **** the previous owner did for a LOOONG time.

 

yeah, the deeper i dig, the more ridiculous it gets. i should have snapped a picture but i was so bewildered and didnt think of it. the lower radiator hose was sectioned for some reason and a 6 inch pvc pipe strapped in between them. needless to say it was leaking like a MF.


thanx tho, confirmed everything i thought. theres not much info out there for the 2.5l and what info is out there doesnt seem to be complete.




also, small side not, the TBI actually started mid-86. i think mine is tagged September 86

 

Yes they do, typically 5 speeds had 3.07s and automatics had 3.55s

The first 3 numbers on the bottom line of that tag tell me that yours has 3.07s

Where are you located?

It looks like you just blew up the spider gears, if thats the gas you don't need a new axle, you can go to the JY and get new spider gears out of any XJ/MJ/YJ/TJ Dana 30 front axle. Before you do that, make sure you inspect the ring and pinion for damage.

 

I have a 2000 XJ with 123K on it. Just a quick question about 4x4: when I shift into 4x4 a light come on that says PART TIME. What does this mean? Also with 123k should I be concerned about the timing belt? I have had the jeep for almost a year and don't know any history. Thanks for the help.

 

The "Part-Time" light is to let you know that part-time 4x4 is engaged. On a jeep, this means that you should only be using this setting "part of the time". You should NOT use the 4x4 part-time position on dry/wet pavement, or anytime that the surface you are driving on is not what you would consider a "loose" surface (ie. snow, mud, sand, dirt trail, rocks). Using 4x4 part time on solid/grippy surfaces will lead to hopping/skipping/binding while turning because the wheels are locked together, and will lead to failure in one or more of the 4x4 components.


Also Jeeps do not use timing belts - we have a timing chain, which should really never need replacement. The 4.0L engine has been known to last well into the 300k region and beyond with proper maintenance.

If you are unsure of the maintenance history, I would start with a full fluid change and tuneup, including:

Front and Rear differentials fluid
Transfer case fluid
Transmission fluid
Coolant Flush
Possibly power steering fluid
Oil + Filter
Fuel Filter
Spark plugs, Wires, possibly rotor+cap
Seafoam application

 

thanks for the help.

 

Yeah, I need to get a better look in there and see what else is wrecked. If it's just the spider gears, does that mean I could buy a locker for the front and just put that in?

I'm in Wilmington, NC by the way.

 

ok now ive seached all over this forum .. does any one know if mj leaf springs wil work in a xj length wise because im thinking it would be a really soft 3" lift for really cheap

 

ok you know that the cherokee is a bad *** when you are of road and snap all the bolts to the engine hanger which bolts to the motor mount.
So now the question is do i need to drill the bolts out of the block and replace them or can i just weld the hanger to the block? the concern that i have is crystalizing the block if i weld. although welding is the faster fix......what to do?

 

it means u need to use STAR. Stop Think Act Review before driving off into some pit of mud that could've went to China.

I go nice and slow

btw. lemme know what you find out. if you want, you can buy a shed, put it in my backyard, and move all my **** out there, and youll have more than enough room to work on the jeep now lol.