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Drive shaft out of balance

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19K views 26 replies 13 participants last post by  pertaandrew  
#1 ·
Hey guys, I have Jeep Patriot 2.0 CRD and I wanted to know did anyone have their drive shaft out balance and what did you do? I'm having a vibration under acceleration issue. I checked the service manual and I'm planning to remove the drive shaft for further inspection and eventually take it to a truck service shop in order to balance it. I want know : the drive shaft in the Patriot is composed of one single drive shaft or two separate shafts because there's a central mounting support in the middle of the drive line. Is there a bearing situated inside that central mounting support?

Thanks if you have already an idea
 
#10 · (Edited)
Thanks for your support.
I just pulled both abs fuses out of the fuse box just to make sure (fuse #34 & #35). I tried without the green one and then without the pink one. And then without both. ABS light came on as well as 4WD! and ESP BAS light.

In the end vibrations are still there. So no difference what so ever.

Something to bear in mind.
The car only vibrates at full acceleration. The whole car chassis vibrates but doesn't shake. I feel it in my spine and under my feet. When in neutral gear no vibrations.
When accelerating vibrations kick in and then disappear as RPM go higher.
For example: I'm driving in 4th gear and vibrations kick in 2200 rpm until 2700rpm and then disappear. So between 70 km/h and 85 km/h. Same with the 5th and 6th gear engaged between 2200 and 2700rpm.

Does this mean that I should rule out the rear train as well as the drive shaft?
 
#12 ·
Hi all, has anyone determined the cause of the OPs issue yet? I have a 07 2.0 CRD patriot with manual gearbox and I get the same weird vibration around 60 - 70 km/h and then goes away one exceeded of if not accelerating. I've had somebody look at it suggesting engine mounts but that doesn't seem to likely given there isn't much play in them and my PAT only has 130,000kms on it (about 75,000 miles). Any ideas what to look at here? Thanks
 
#14 ·
Fuse #2 provides power to the AWD control module, so removing it would keep the electric clutch from engaging and supplying power from the PTU to the rear differential, however the rear axles will still be connected to the rear diff gears so the assembly will still turn as you drive it.
 
#20 ·
How about the rear diff bushings? The awd system is programmed to send power to the rear under heavy acceleration to aid in strait line stability.