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Old 01-08-2009, 02:58 PM   #1
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Chirping sound

Hey everyone. i would like to ask all of you for your help. Not all the time but periodicly i have a chirping sound that sounds like its coming from the transfer case area. It's only while the Jeep is going forward that this sound appears. It quits if I slow down or come to a complete stop. Most of the time though there is no chirp at all. It seems to appear just once in a while. I can't get it to do it while standing still, and I am having a hect of a time trying to find it while i am driving. If anyone is familiar with what i am talking about let me know what you think it could be, and what i could do to fix it. During the times it is chirping it is quit annoying, It does not make any difference if i push in the clutch or apply the brakes, it still chirps. It quits though when i slow down and come to complete stops. And sometimes when i start going after it has been chirping, it will just quit. Very weird.
What do you guys think???

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Old 01-08-2009, 03:45 PM   #2
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I had that issue, it turned out to be U-joints in the front drive line. It went away for a couple of weeks and then came back. This time it was a Unit bearing, I replaced it and one week later the other unit bearing did the same thing. I have not had it since. I also replaced the u-joints in the front axle shafts when I had the bearings off. They were OK but I figured I'd do it while I had it all apart.

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Old 01-08-2009, 05:29 PM   #3
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You need to check all the U-joints in the drive train.You have one on each front axle,one on each end of the front drive shaft and if stock you have one on each end of the rear drive shaft for a total of 6 u-joints in all unless you have an after market rear DS and SYE then you would have 3 joints in that shaft.But I would say you are going to find the problem at the joint in the rear DS at the axle end.
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Old 01-08-2009, 06:10 PM   #4
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I am glad that you posted this! I just had the same issue on and off the past few days and it can get pretty dam annoying. I have been trying to think of how to make a post describing it without sounding nuts and I think you described it much better than I would have done and mine sounds exactly as you have described. I know what is on my shopping list now.
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Old 01-08-2009, 06:44 PM   #5
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I thought that it might be the U-Joints, but wanted to make sure and see what you guys said. I have a garage set up for tomorrow, So i am going to go get new U-Joints and install them. I think the sound is coming from the front shaft. But i am going to check the rear shaft as long as im gona be under it. It all started the 1st time i put it in 4 hi after our 1st snow storm. It just kept getting more and more noticable and starting to bug me. Thanks for all your help. I'll let you all know how things go.
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Old 01-08-2009, 06:49 PM   #6
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Does it just do it in 4WD or anytime in 2 or 4WD.
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Old 01-08-2009, 10:04 PM   #7
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It does it anytime, 2HI and 4Hi. It didn't start though till one day when i put it in 4Hi after a storm.
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Old 01-09-2009, 05:40 PM   #8
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Well i'm still not sure to be exact what was causing that chirping sound. This morning i crawled under my jeep and checked out the U-Joints. Every one of them was tight and no slop what so ever. Yesterday when i discovered this i took a less traveled route home. I put my jeep in 4hi and the sound was still there. I drove a couple blocks and put it back in 2hi and the sound disappeared. I have driven all over this city today putting on about 70 miles. I could not get that sound to chirp at all today. I had my jeep in 4wheel drive and 2 wheel drive on and off all day. NO sound at all. I guess i'll just wait till it appears again and then try find it. The U-joints do look pretty solid to me though. I have changed plenty of them in my 1976 ford F250 i had. So i do know what i am lookin for. Anyway thanks for your help and hope you all have a good weekend.
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Old 01-09-2009, 05:46 PM   #9
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At first my u-joints looked good also, but the sound persisted. They just aren't loose yet, they are dry and that's where the sound is coming from. Failure is coming.
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Old 01-09-2009, 09:51 PM   #10
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It could be U-joints if it is a rythmic chirp but if not you might look at shift mechanism for the T-case. There is a dealer kit that seals the bushing that mounts to the body.

You might try a spray grease or some sort of lube on the T-case linkage?
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Old 01-11-2009, 10:30 AM   #11
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Hey everyone. Thought i would give you all an update on the chirping sound. after driving around doing errands it started to chirp. I took it over to the dealership and had a tech ride with me so they knew what i was talkin about. He decided to pull it in the shop to check it out, and he confirmed that the u-joints next to the T-case are bad. The seals are cracked and leaked the grease out. Since i have a service warranty that will cover the repair i made an appointment for next sat to get it fixed. I would do it myself but being winter time here i don't have a warm place to do it. Good thing i have a warranty. Thanks for all your help and suggestions.
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Old 01-12-2009, 11:36 AM   #12
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Make sure they ck the centering mech.in cv joint between the 2 u-joints.
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Old 01-17-2009, 09:40 AM   #13
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I recieved a call from the dealership who was going to fix and replace the U-joints in my front drive shaft. They told me they have to reschedule since they had to order the parts. I was wondering why would they have to order U-joints from the east coast and not get them locally. So i called and asked ... they told me that Jeep recommends replacing the entire front drive shaft and not replacing just the U-Joints, Why would they say that? So in order for the warranty i bought when i purchased the Jeep to pay it has to be done the way jeep recommends, they will not cover it by just replacing the U-joints. Since no one locally had the complete drive shaft i had to set up a new appointment for next saturday. Does any of you see a problem with all of this that i am not seeing right now? It just seams like a waste of money by having to replace the whole drive shaft and not just fixing the U-joints. Either way i am getting it fixed without costing me anything.
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Old 01-17-2009, 10:29 AM   #14
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Quote:
Originally Posted by BILLG View Post
Make sure they ck the centering mech.in cv joint between the 2 u-joints.



I would say they found something more than just a u-joint or they just didn't want to get dirty that day Either way if they say the whole shaft has to be replaced let em do it.If you can get a new complete part verses a rebuilt part and the warranty covers it I say more power to ya!!!
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Old 01-23-2009, 10:14 AM   #15
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Fawkit let 'em do it! LOL!

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Old 01-24-2009, 12:55 PM   #16
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Well i got my chirp fixed. ( angry sparrows) Since it was recommended to replace the entire drive shaft instead of just replacing the U-joints, they replaced the front drive shaft with a spicer driveshaft today. No more chirp
It didn't cost me anything since i bought a service contract when i bought my jeep. I am glad i had that... it would have cost me $410.00 otherwise. I did ask for the old driveshaft back, but they said they send them back in to be rebuilt, so they wouldn't let me have it. But i also found a new problem, this time on the rear end. My rear pinion seal looks like it just started to seep oil a bit. I do not have any drips or anything yet ... its just a little wet right at the bottom where the pinion seal is. I am hoping it doesn't get any worse since this is a cheap and easy fix. I am also hoping to just do this myself in the summer when the temps are warmer then -15 degrees. Dang North Dakota weather.
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Old 01-26-2009, 10:44 PM   #17
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I have a similar problem on my 03 sport. When I get above 20mph it starts to chirp, but when I put it into 4hi the chirping goes away. The chirping comes back after I put it back into 2wd. Does this sound like a problem with the u-joints? Just want to make sure before I take it into the dealership.
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Old 01-26-2009, 10:51 PM   #18
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Dude. I promise it is the U-joints. I have done this on the 77 CJ-5 I had and they looked good and tight as well. Put some high quality ones in and that will fix it right up.
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Old 01-27-2009, 05:28 AM   #19
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Quote:
Originally Posted by maperry View Post
I have a similar problem on my 03 sport. When I get above 20mph it starts to chirp, but when I put it into 4hi the chirping goes away. The chirping comes back after I put it back into 2wd. Does this sound like a problem with the u-joints? Just want to make sure before I take it into the dealership.

It probably is the U-joints. The dealer will know if you have them check it 1st. For me one of the techs went for a ride with me to confirm the noise then he took it in the shop to confirm it was a U-joint. When mine 1st started chirping it was only in 4HI, then it became more often even in 2HI. But it chirped way louder in 4HI when there was a load on the driveshaft for power. The Joints that were bad for me was the double cardan joints next to the transfer case.
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Old 01-27-2009, 11:08 AM   #20
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Good 2 hear u got it resolved.

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