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Old 06-24-2014, 11:51 PM
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general Jeep Maintenance

this is going to be a very broad thread but i need to go through my jeep, just because its reaching 150,000 miles and I'm going to go through everything on it, to make sure nothing needs to be replaced or making sure it is probably greased and whatnot. I was just wondering what i would need to do for a full check-up on my jeep, from greasing parts like u-joints, to checking any other random components, like the oil in the differential. i am mainly just looking for a list of things to go through to ensure my jeep is running how it should be, just to ensure i don't miss anything. any help would be great! like i said, this is very general, just making sure i don't miss anything and any problems jeeps may have with this kind of mileage

Thanks!

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Old 06-25-2014, 07:04 AM   #2
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Transmission fluid
Flush coolant system
Diff oil change
Air filter
Rear axle tube seals
Front and rear pinion seals
Brakes
Check the ball joints and grease them
Grease steering linkage
Transfer case fluid change
Spark plugs

I can't think of anything else now but that should keep you busy for a while

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Old 06-25-2014, 07:10 AM   #3
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I would only add, per recommendation of others on this forum, I flushed my brake system about 2 months ago even though the fluid looked good. Man what a difference. It's was like having new brakes. Ran about 3 quarts thru it. I've owned the Jeep 4 years and always had good pedal but didn't stop well. Stops great now. Almost 200K on the clock.
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Old 06-25-2014, 08:35 AM   #4
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Ball joints, ujoints (f axle, both driveshafts), steering components (tie rod ends), unit bearing hubs, serpentine belt, idler pulleys (I'd check the others too), back flush heater core (and block if you can) when you change out coolant, steering fluid flush, and all of the stuff mentioned by others already.

I replaced most of that stuff on my '99 that had 150k miles when I bought it, and again on my '06 with 50k when I bought it. At least I know I can start to modify and strengthen stuff now without worrying about something still being neglected. My rig is in top shape.
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Old 06-26-2014, 12:35 AM
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thanks y'all! this is my learning/project car, being my first car, so I'm still learning and loving it! just not having the experience and time worked with cars, i don't know exactly what thinks need to be replaced when and how and what things tend to cause problems and what not. when i get time this weekend, ill probably spend all day going through everything on my car, and hopefully have a large enough budget to replace everything such as seals and random little things like that, along with keeping it greased properly and all. about half the things I'm about to look up to figure out how to do them but thanks for ideas on what needs to be done!
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Old 06-26-2014, 03:13 AM   #6
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Ball joints and tie rods are very important.

Have you ever seen what a simple tie rod failure can cause at highway speeds?

Frightning.
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Old 06-26-2014, 06:36 AM   #7
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Here's a helpful place for DIY directions with photos:

http://www.stu-offroad.com/siteindex.asp
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Old 07-10-2014, 11:31 PM
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i know i have asked this question on other threads but i still don't have a clear answer and I'm getting VERY mixed answers when it comes to replacing the transmission fluid! okay, so a local mechanic, someone who specializes in transmissions, told my father NOT to change transmission fluid because it will cause it to wear excessively and ultimately fail prematurely.... is there any truth to this??? I'm just very concerned about hurting my transmission as i don't have the money for a rebuild or replace... i have a 2001 jeep wrangler manual with 6cylinder engine and the NV3550 tranny. i plan on replacing the fluid with the Red Line MTL as i have heard very good reviews on it.

I just need an answer! thanks y'all!
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Old 07-10-2014, 11:47 PM   #9
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Well it's the only fluid the book says use ONLY Mopar. I recommend Mopar. Been using it 140,000 miles. I use all kinds of synthetics every where else. When I seen in my tranny through shifter port changing clutch everything looked new. Good stuff. Not cheap neither.

I change it every 30k so it's been done 4 times. Old fluid good wtf? Lol
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Old 07-11-2014, 12:03 AM   #10
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...so a local mechanic, someone who specializes in transmissions, told my father NOT to change transmission fluid because it will cause it to wear excessively and ultimately fail prematurely...
Sure he was not talking about an automatic transmission?
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Old 07-12-2014, 12:22 AM
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Well it's the only fluid the book says use ONLY Mopar. I recommend Mopar. Been using it 140,000 miles. I use all kinds of synthetics every where else. When I seen in my tranny through shifter port changing clutch everything looked new. Good stuff. Not cheap neither.

I change it every 30k so it's been done 4 times. Old fluid good wtf? Lol
i actually have no clue to be honest whether or not if the fluid or old or has ever been changed... from what i understand, if you don't change the fluid, the fluid becomes old and saturated with sheered off parts of the clutch and other components, and if you change it, then it will fail shortly after.. i have read this only on transmissions that have never or very rarely had fluid change... so I'm not even sure what to do. how can i tell if its old fluid or if i should change or it leave it be until it does wear out?... sorry for making it confusing and asking all of these questions!
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Old 07-12-2014, 12:44 AM   #12
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Ball joints and tie rods are very important. Have you ever seen what a simple tie rod failure can cause at highway speeds? Frightning.
I got off an interstate, almost turned north into heavy traffic, but on a whim headed south instead and immediately plunged into a field when my tie rod failed.

So many ways that day could have ended much worse than it did.
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Old 07-12-2014, 08:46 AM   #13
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I just spent a weekend working on my Jeep. I changed the fluids in both diffs, NV3550, transfer case, engine oil & filter and lubed up the front end. I purchased the tranny fluid from the local jeep dealer for a silly amount of money. Huge difference in the transmission shifting and noise. Felt good to get all that completed. Now I need to work on coolant and brakes.

Suggest paying up for the transmission fluid. It was worth the money to me.
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Old 07-12-2014, 09:56 AM   #14
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Don't forget the throttle body. If it hasn't been cleaned before I'm sure at 150k miles it could use a good cleaning now. It will definitely make a difference in performance if it's never been cleaned.
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Old 07-12-2014, 10:16 AM   #15
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Originally Posted by ptoncannon View Post
... from what i understand, if you don't change the fluid, the fluid becomes old and saturated with sheered off parts of the clutch and other components, and if you change it, then it will fail shortly after.. i have read this only on transmissions that have never or very rarely had fluid change...
None of that is applicable to a manual transmission. How do you suspect that clutch material is going to contaminate the lube in a manual transmission?
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Old 07-12-2014, 11:37 AM
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i just really need to be sure my transmission won't fail after i do the fluid change... i understand that on a vehicle that is maintained regularly and has had the fluid changed the recommended 30,000 miles then it is a good idea and necessary to change the fluid. But i have only had this car for about 15,000 miles and have no clue what has happened to it in its earlier 135,000 miles... lets assume that it has 150,000 miles on it and has never had the tranny fluid changed... what do i do then?.. how can i tell if it has never been changed?

also GGA1759
how do you clean the throttle body? still learning everything
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Old 07-12-2014, 11:55 AM   #17
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I think the transmission guy was referring to an automatic trans.
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Old 07-12-2014, 11:56 AM   #18
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Probably the best $20.00 investment you can make is a repair manual. Yes I know you can get anything off the internet. Taking the manual with you to read at lunch or break time or just laying on the couch and reading sections is a good thing. And use good quality brand fluids. IMO they are better.
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Old 07-12-2014, 12:00 PM   #19
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Probably the best $20.00 investment you can make is a repair manual.
agree, bought the book, worth every penny.
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Old 07-12-2014, 12:01 PM   #20
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... i understand that on a vehicle that is maintained regularly and has had the fluid changed the recommended 30,000 miles then it is a good idea and necessary to change the fluid.
You still don't undertstand that a manual transmission is not an automatic transmission.

What does the FSM say about fluid replacement intervals in the case of the NV3550?
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Old 07-13-2014, 09:37 PM   #21
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probably the best $20.00 investment you can make is a repair manual. Yes i know you can get anything off the internet. Taking the manual with you to read at lunch or break time or just laying on the couch and reading sections is a good thing. And use good quality brand fluids. Imo they are better.
+++1
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Old 07-13-2014, 10:07 PM
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You still don't undertstand that a manual transmission is not an automatic transmission.

What does the FSM say about fluid replacement intervals in the case of the NV3550?
I'm sorry, I'm just new when it comes to cars and all of that. I'm learning on my own so i don't understand all that i should right now... but I'm not sure.. i don't have the FSM but i want to change mine regardless, because i am certain it is due for one.
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Old 07-13-2014, 10:29 PM   #23
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None of that is applicable to a manual transmission. How do you suspect that clutch material is going to contaminate the lube in a manual transmission?
True. He is miss informed. Don't know how it works. The clutch is outside the transmission. If you ford deep water don't push it. It will be under and in water. It's in the bell housing separated from tranny by a shaft and sealed bearing. The tranny fluid may acquire metal particles over its life but that don't help. Best get rid if them. Some plugs have magnets to collect them and keep them out of the fluid. New fluid is good fluid. Only harm in changing it to much is the environment not your Jeep but that ain't cool either. I recommend Mopar fluid for the tranny. Book strictly says so in 2000. Only fluid it says that for. Has worked great for me 14 years no problems. Take care brother.
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Old 07-13-2014, 11:07 PM   #24
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Ok, so you don't want to get a maint/repair manual right now-I understand. The first thing to do IMO is to get a build sheet-free. E-mail your 17 digit VIN # to [email protected] . Ask them to send all/factory installed options. They will E-mail you back everything your jeep came with from the factory. Here you will find out what trans type/number/etc (and everything else). Then- just Google "how to change fluid on transmission xxxxx". include year model in search.
have fun with your Jeep. And remember when ever some thing that has to be done-and you don't have the proper tool- is a good excuse to go buy it, and maybe a few extra tools you may need. Tell your wife you saved $xxx because you did it your self. They use the same reasoning-I saved $xxx because it was on sale, or because she can do it herself! if this doesn't work, please delete this E-mail. I admit no guilt.
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Old 07-15-2014, 10:49 PM   #25
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If you are not very familiar with the mechanical aspect of this animal then I would NOT recommend the FSM. The Factory Service Manual is written for those who already have a good working knowledge of the equipment.
I would recommend the Clymer, Haynes or Chilton Manuals as they are written in a easier to follow manner. YOu can use the FSM to go along with, but the others are better for basic stuff

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