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Old 08-08-2015, 05:00 PM
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Front driver side grinding noise.

2006 Jeep Grand Cherokee Laredo 4x4 3.7. This awful noise happens as soon as I accelerate the vehicle. It sounds like the front end is going to come to pieces. It stops after about 30 mph. Can't go in a inclined area cause it crunches all the way up it. Only when accelerating in both drive an reverse. Had boot an driveshaft redid where it goes into transfer case. That did not fix it. Changed fluids in transfer case also. No metal shavings. Please help. I have spent hundreds of dollars trying to fix already. Single mom an this is my only means of transportation

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  #2  
Old 08-08-2015, 07:03 PM
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Re: Front driver side grinding noise.

Welcome to the garage.
Where both front drive shaft CV boots checked for Cracks or leaking grease? Also the joint at the prop shaft at the front differential is suspect. If this all seems to be ok, check the front differential fluid level and see if there is no metal glinsters in the fluid. If there is, then an internal bearing can be bad.
There is no noise when braking?
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Old 08-08-2015, 07:32 PM
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Re: Front driver side grinding noise.

Thanks. I'm so glad I found this page. I have been dealing with this issue for months. The only boot that was replaced or checked was the one that goes into the transfer case. An there is no noise when braking. It only happens when u mash the gas or on a incline. So I ease on the gas when I pull off just so it doesn't sound so bad. So basically I avoid the interstate an take the long way. It seems to clear up after about 30mph an drives fine until u have to make another stop. Then does it again on take off
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Old 08-09-2015, 07:14 AM
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Re: Front driver side grinding noise.

So the boot was changed from the joint on the T-case side, but was the joint itself replaced as well? If a boot cracks, road dirt will enter the joint and the grease will come out. This results in rapid wear of the joint, whereafter it starts making noises.
But also the U-joint on the differential side should be checked for play and the CV joints in both half shafts.
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Old 08-09-2015, 08:30 AM
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Re: Front driver side grinding noise.

Yes the joint was replaced on the transfer case side. So what u are saying I should have the other end of the driveshaft checked also. The universal joints on that end may be bad. Is that a simple job that I may can do myself?
Just checked there is play in the driveshaft in the front. I can move it back an forth with my hand. How do I know if the universal joints are bad?
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Old 08-09-2015, 08:55 AM
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Re: Front driver side grinding noise.

Is there axial play on the U-joint where the shaft goes into the differential? There should be no play there at least. Is the play in the joint shown on the attached pages?
If it appears to be a bad U-joint, then the question is if you have the tools and some mechanics experience if you can do it yourself. You will have to be laying on the ground, under the jeep, and hold the shaft in place with one hand, while removing the bolts with the other. You can also check some repair shops and see what you would be paying for them to do it.
But first need to be sure if the problem really is with the U-joint.
Attached Files
File Type: pdf Front prop shaft.pdf (126.7 KB, 5 views)
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Old 08-09-2015, 09:49 PM
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Re: Front driver side grinding noise.

I'm really thinking it's in the left front wheel. No play in the cv axles. I'm wondering what it could be. It only happens when u accelerate in drive or reverse. I can put it in N an accelerate an it doesn't do it.
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Old 08-10-2015, 06:29 AM
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Re: Front driver side grinding noise.

You can eventually have a bad wheel bearing, eventhough i wonder if the noise then would disappear after 30 mph.
Didnīt you say that you felt play on the front U-joint, close to the differential?
When you put the transmission in N, there is no torque output from the transmission to the driveline, so eventual bad joints will not be loaded when pushing the accelerator.
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Old 11-03-2015, 09:24 AM
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Re: Front driver side grinding noise.

I have this same issue on my 2012 WK2. going in on Tuesday for service. it comes in at around 20mph, then disappears, then returns at 40mph, and goes away again. maybe it doesn't go away but it is not felt or heard.
I can feel it in the gas pedal, the wheel, and the breaks. pads are good. sound, and feel still there while in N roll. I think it is a wheel front wheel bearing or front drive related.
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