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  #49  
Old 09-10-2012, 03:43 PM
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Re: Pentastar vibration at 2000 rpm/60 mph

Have posted earlier threads. Was able to replicate problem to the dealer. Also, the regional engineer was in town and he rode in it and could feel/hear the problem. Unfortunately this seems to be an issue with the v6 ck2's. I also tried the 2013 and could replicate the problem on those. I'm surprised more owners have not reported this. I test drove the V8 and it did not have the problem. For now there is no fix for the V6 and only alternative would be to go to a V8.
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  #50  
Old 09-12-2012, 11:02 AM
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Re: Pentastar vibration at 2000 rpm/60 mph

I consider the issue to be a normal operating characteristic. Not desirable, but normal. It's been only mildly offensive from the beginning and after 14k miles has smoothed out a bit. I'm sill liking the 25mpg on long highway trips so it's definitely something that I have no problem living with.
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Old 09-16-2012, 12:00 PM
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I've raised the issue with Chrysler. Based on my conversations with the dealership and other investigations,this is a problem with some batches of the WK2 vehicles, which means when you will be trying to sell your vehicle, you'll have to take a hit if your vehicle has this issue. Many dealerships have reported this issue and now it's Chrysler that has to fix this. I'm worried about driving a vehicle which seems to be inherently flawed. This might be a big safety issue which Chrysler is ignoring to address. In any case Chrysler has a defective product on the market and they ought to either take responsibility and fix the issue or buy take these cars back and give us cars which work.
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Old 09-16-2012, 12:17 PM
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Re: Pentastar vibration at 2000 rpm/60 mph

I have a 2012 Overland V6 and in 4th gear at 2000 rpm's underload it makes the same sound...harmonic...woo..woo...woo...woo. There is no slipage with the transmission...just a harmonic noise. They put the ears on and said it was a front left wheel bearing. They changed that and it still makes the noise.
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Old 09-17-2012, 07:16 PM
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Re: Pentastar vibration at 2000 rpm/60 mph

Mine does the exact same thing. Going up a hill around 60mph doesn't matter if it is 4th or 5th gear. Just now over 1000 miles on it. I thought it may of been a motor mount needing to break in or something. Sometimes I think it may be the left front axle but it is hard to tell. It is definitely noticeable. I will send a thing to Chrysler as well using the website posted in this thread. It is not acceptable to me since this is the first new vehicle I have owned. I have owned two other used Hondas and drove the until almost 200000 miles with just doing regular maintenance. My wife talked me into the Chrysler brand since her dad loves them and has not had any issues. Most of the previous years of the GC seem very reliable is why I decided to give them a shot. Hopefully Chrysler will have a fix in the near future or it may be my first and last Chrysler.
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Old 09-24-2012, 10:40 PM
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Re: Pentastar vibration at 2000 rpm/60 mph

I hAve the same harmonic sound it started like yours under load and up hill I have a 2011 overland v8 the dealer changed both front wheel bearings and the noise went away for about 500 miles then slowly came back now it is at the point where you can hear it at 20 mph and over low volume levels of the radio. The noise is very load around banked turns.i have been dealing with mine since February along with a 1 month stay over the dealers. Good luck I wish some one would find a fix. I also had a allignment done by the jeep dealer and replaced tires as per Chrysler so we could find a fix.
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Old 09-26-2012, 10:54 AM
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Re: Pentastar vibration at 2000 rpm/60 mph

This noise is a V6 problem and I don't think it has anything to do with the wheel bearings but a driveline/motor issue. I have gotten used to it after 7K miles but still do not like it.
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Old 09-27-2012, 07:17 PM
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Re: Pentastar vibration at 2000 rpm/60 mph

Yeah it is just frustrating. We looked at Explorers and while they are nice, I liked the looks and size of the Grand Cherokee so much better. It is my wife's daily driver or other wise it would drive me nuts just the OCD in me... We have 33k now and it is no worse or no better than when I fist noticed it at 22k just 1,000k after we bought it. here's to hoping they address the issue with a fix and not a bandaid.
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Old 09-29-2012, 07:04 AM
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Quote:
Originally Posted by Djv1389 View Post
I hAve the same harmonic sound it started like yours under load and up hill I have a 2011 overland v8 the dealer changed both front wheel bearings and the noise went away for about 500 miles then slowly came back now it is at the point where you can hear it at 20 mph and over low volume levels of the radio. The noise is very load around banked turns.i have been dealing with mine since February along with a 1 month stay over the dealers. Good luck I wish some one would find a fix. I also had a allignment done by the jeep dealer and replaced tires as per Chrysler so we could find a fix.
Something else is wrong with your car. This is not the harmonic sound that most are describing. You should have a talk with your service advisor, take him for a ride and duplicate the sounds so he can diagnose it.
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Old 10-01-2012, 01:12 AM
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Re: Pentastar vibration at 2000 rpm/60 mph

I had a similar vibration in my 04 Ford Mustang...I know, completely different car. However, the theory may apply. I had the Ford dealership look at it twice, and both times they aligned and rebalanced the tires. The problem never went away completely. However, when I replaced the shocks/struts and bought new tires, it is so much better.

I've found that Goodyear tires (OE) require more balancing than Bridgestone or Michelin.

If they rebalance your tires, they should ensure they use a good machine with road-force balancing.

You may also want them to check both driveshafts to ensure they're balanced.
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Old 10-10-2012, 10:20 AM
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Re: Pentastar vibration at 2000 rpm/60 mph

I drove a Laredo v6 with quadratrak I and did not have the problem. Seems to be an issue with v6 quadratrack II
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