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-   -   A few things going on with the YJ (http://www.wranglerforum.com/f218/a-few-things-going-on-with-the-yj-234919.html)

YJ Wrangler 04-12-2013 08:57 PM

A few things going on with the YJ
 
I just finished the 4 inch RC and have been chasing down some problems now for the past few weeks. Was wondering if any one knew what this may be.
I am driving along and the trans is now making a clunking sound. It sounds like it is coming from under the stick shift and will do it in all gears and even when the clutch is in. Though with the clutch engaged, it slows and stops. Now it is a manual so, i am suspecting the shift fork? Also it now has a vibration when it hits about 53 mph.
Could the vibe be the tranny or time for a SYE? Any help or thoughts would be cool and thanks in advance.:facepalm:

rykemc 04-12-2013 09:48 PM

Can you take a picture of your rear drive shaft yoke going into your transfer case? I have a feeling you yoke is not far enough into your transfer case. Did you lengthen your rear driveshaft,?

YJ Wrangler 04-12-2013 09:59 PM

Quote:

Originally Posted by rykemc (Post 3629911)
Can you take a picture of your rear drive shaft yoke going into your transfer case? I have a feeling you yoke is not far enough into your transfer case. Did you lengthen your rear driveshaft,?

I will take a pic in the morning when there is a little more light out. I did a t case drop but did not lengthen the drive line. Could that couse both issues?

rykemc 04-12-2013 10:13 PM

It could and let me explain why. If the yoke is not seated far enough on the output shaft the clunking you feel could be the yoke rocking on the shaft. Your vibration comes from the yoke moving around or incorrect driveline angle.

YJ Wrangler 04-13-2013 02:13 AM

Quote:

Originally Posted by rykemc (Post 3629986)
It could and let me explain why. If the yoke is not seated far enough on the output shaft the clunking you feel could be the yoke rocking on the shaft. Your vibration comes from the yoke moving around or incorrect drive line angle.

That sounds very plausible and now that I am thinking the same thing, Get the drive shaft lengthened?

rykemc 04-13-2013 03:14 AM

You could do that but you still need to make sure your drive line angle is correct. I have a 4.5" lift on mine but I run a SYE and driveshaft. A lot of people do this with 4"+ lifts. If you don't want to go that route or do not have the funds look up a poster by the name of ibuildembig. He is a fantastic person and very helpful. He also does not like the SYE/double cardian driveshaft set up and I believe all his rigs he builds, or most of them, he runs slip yoke. He can help you set yours up the right way. Good luck and keep us posted

Surfinglbi23 04-13-2013 08:19 AM

Fantastic advice right above

YJ Wrangler 04-13-2013 09:35 AM

Quote:

Originally Posted by rykemc (Post 3630707)
You could do that but you still need to make sure your drive line angle is correct. I have a 4.5" lift on mine but I run a SYE and driveshaft. A lot of people do this with 4"+ lifts. If you don't want to go that route or do not have the funds look up a poster by the name of ibuildembig. He is a fantastic person and very helpful. He also does not like the SYE/double cardian driveshaft set up and I believe all his rigs he builds, or most of them, he runs slip yoke. He can help you set yours up the right way. Good luck and keep us posted

I just read the first few pages of your build thread and from what I have seen, my YJ is on it's way to you as we speak. Thanks for the advice and I am going out to take a photo here in a few, after I put coffee on.

rykemc 04-13-2013 10:00 AM

I did just what you are doing. Asked a lot of questions, did a lot of reading and then applied what I learned after wading through all the BS. :)

YJ Wrangler 04-13-2013 10:03 AM

3 Attachment(s)
Here are a few pics, I can see that the drive line may be a little short? What do you think?
I also found a little mud puddle the other day.

YJ Wrangler 04-13-2013 10:08 AM

Quote:

Originally Posted by YJ Wrangler (Post 3631519)
Here are a few pics, I can see that the drive line may be a little short? What do you think?
I also found a little mud puddle the other day.

Now lets see what I can find at the 4 Wheel Parts Truck and Jeep Fest. It is today at the Puyallup Fair.
I dont think the drive angle is bad enough to require a SYE but, a lengthening may be in order.

rykemc 04-13-2013 10:10 AM

Grab the yoke right where the u-joint cups are and see if it has excessive play on the shaft. Like move it up and down and side to side. See if it creates a quieter clunking noise. But it really doesn't look like its that far out to me though.

YJ Wrangler 04-13-2013 10:23 AM

It makes the noise and sounds like it is deeper in the trans. When I got the jeep, the trans was rebuilt about a few years ago and no "real" miles have been put on the Jeep. It was used to tow behind an RV and go into town. The guy got it and put about 200 miles on it in 2 yrs so, I dont think any thing should have happen to the tranny but, you never know huh?
Should I take the u joints off at the top and see what happens when I play with it a little as in push it in a little and see what happens?

rykemc 04-13-2013 10:32 AM

Might go ahead and just un-bolt it from the rear end and check both your u-joints. Mark the yoke on where it is sitting now for a reference point and see how tight it is on the output shaft.

YJ Wrangler 04-13-2013 10:40 AM

Will do that right after I get back from the 4 wheel parts and Jeep show. I will take a few pics.. And keep you posted on what I find.

rykemc 04-13-2013 10:42 AM

Sounds great. Have fun

YJ Wrangler 04-13-2013 03:55 PM

Just got back from the 4Wheel parts and Jeep show. I ended up getting a SYE and plan on putting it is next weekend. I am hoping that that was or is the noise I am hearing? I am sure it will help with the vibration. But, I can check things out while I am in there and see what is going on.

YJ Wrangler 04-14-2013 02:18 PM

4 Attachment(s)
This is what the drive line looks like. I took the U joint off and played with it a little bit. There is a bit of play up and down and side to side. I did get the SYE yesterday but, I need to install it and see what the measurements are to have a CV joint and length put on the drive line. There is about 3/4 of an inch between all the way in and all the way out.

rcac101 04-15-2013 06:48 AM

That clunk noise dose the shifter try to rotate clock wise when u accelerate out of first.
Ive just started hearing it on my GFs 90 wrangler and the stud mount was snapped behind the drivers side at the trany. The stud keeps the trany down.

YJ Wrangler 04-15-2013 07:22 AM

2 Attachment(s)
I may have gotten the wrong SYE? The SYE I got is for the NP231. Is this the correct Slip Yolk and what would be a running average for a drive line shop to get the drive line fitted?

YJ Wrangler 04-15-2013 07:24 AM

I am learning so much now that I have a YJ and doing all this work to her. By the end, I am going to be a master mechanic.


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