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jp467 09-17-2011 11:50 PM

New Vibration
 
I have been noticing a new vibration at 70 to 75 mph. This is not like a tire balance issue though. I think it might have something to do with the mds. It seems it might be temperature related as it always seems to do it at night as the temps cool into the 50's. its hard to describe its not a shaking just a vibration that I feel in the wheel and some in the floor and its cyclical. If I drive at a constant 72 it will come and go every 30 seconds or so. I can't figure out why it would do this I started to think maybe the engine was vibrating when the air conditioning compressor kicked on, I turned it off and I don't think it made a difference. I'm sure glad I bought another vehicle for going back and forth to work as this thing would never be able to take the miles I drive. I only drive it for pleasure and I still have had to take it in for several repairs.

ColdCase 09-18-2011 08:44 AM

Re: New Vibration
 
Tires will do that, and its not a balance thing. Perhaps too low or high tire pressure, but I'd suspect low. Try adjusting the pressure a few pounds.

A loose lug nut perhaps. A bad or worn driveline U joint (front or rear) will also do that. If it gets worse that may be it, if it sounds like a rumble that may be it. You may have a bit of debris stuck to a drive shaft.

To get it fixed, you will likely have to reproduce the vibration for a tech. You may try to rotate the tires and see if the vibration changes. Check for mud or debris on the inside of the wheel. Any change of tire damage?

Those are the most common, but could be just about anything rotating,including the blower motor or a bushing tightened to the point where it does not isolate well.

Sorry to hear about your bad luck with the Jeep. I put about 24000 commuting miles a year on mine without issue.

ernestd 09-18-2011 08:58 AM

Re: New Vibration
 
Sorry to hear.I'm having lots of issues too.

jp467 09-18-2011 09:57 AM

Re: New Vibration
 
I am thinking now it may be something with the exhuast. It does not shake or shiimy like you would normally get with a tire out of balance. It is just a vibration and its not a real bad vibration but I can feel it in the steering and the seat and the floor. Its only above 70 mph and it comes and goes almost in a rythum 15 second with vibration then 15 seconds with no vibration. I also think its temperture senitive I will know more today when I drive it. I just had it in last week to have the left rear cv shaft replaced I did first notice this after that but I can't really think anything with that would cause this vibration.

Ken Jacobs 09-18-2011 10:38 AM

Re: New Vibration
 
If you run in 5th instead of D, you can eliminate the MDS and confirm that it is not the problem.

walterhudson 09-18-2011 11:21 PM

Re: New Vibration
 
Quote:

Originally Posted by jp467 (Post 486511)
I am thinking now it may be something with the exhuast. It does not shake or shiimy like you would normally get with a tire out of balance. It is just a vibration and its not a real bad vibration but I can feel it in the steering and the seat and the floor. Its only above 70 mph and it comes and goes almost in a rythum 15 second with vibration then 15 seconds with no vibration. I also think its temperture senitive I will know more today when I drive it. I just had it in last week to have the left rear cv shaft replaced I did first notice this after that but I can't really think anything with that would cause this vibration.


Just don't drive over 70 mph

jp467 09-19-2011 11:16 PM

Re: New Vibration
 
Quote:

Originally Posted by ColdCase (Post 486494)
Tires will do that, and its not a balance thing. Perhaps too low or high tire pressure, but I'd suspect low. Try adjusting the pressure a few pounds.

A loose lug nut perhaps. A bad or worn driveline U joint (front or rear) will also do that. If it gets worse that may be it, if it sounds like a rumble that may be it. You may have a bit of debris stuck to a drive shaft.

To get it fixed, you will likely have to reproduce the vibration for a tech. You may try to rotate the tires and see if the vibration changes. Check for mud or debris on the inside of the wheel. Any change of tire damage?

Those are the most common, but could be just about anything rotating,including the blower motor or a bushing tightened to the point where it does not isolate well.

Sorry to hear about your bad luck with the Jeep. I put about 24000 commuting miles a year on mine without issue.


Adjusting the tire pressure did seem to help. They were at about 34 cold and I adjusted up to 36 and it seems a lot better. I also torqued the lugs to specs. I was suprised this made a difference.

bing56 10-02-2011 03:22 AM

Re: New Vibration
 
Quote:

Originally Posted by walterhudson (Post 486787)
Just don't drive over 70 mph


Not helpful me thinks. were's the fun in not going over 70 mph
:slapfight:

JohnS 10-02-2011 10:18 AM

Re: New Vibration
 
I had this same problem with my Charger SRT-8. I had the tires load balanced, which helped, but the vibration returned. It turned out to be a Goodyear tire issue. I replaced the Goodyears with a second set, but the vibration remained. I finally replaced the tires with another brand and the vibration went away for good. This seemed to be a common problem with 20" SRT-8 wheels & tires. Some said they got rid of the vibration by replacing the front tie rods. I did that, but the vibration was still there until I changed the tire brand.

spiros 10-02-2011 09:45 PM

Re: New Vibration
 
Quote:

Originally Posted by JohnS (Post 493041)
I had this same problem with my Charger SRT-8. I had the tires load balanced, which helped, but the vibration returned. It turned out to be a Goodyear tire issue. I replaced the Goodyears with a second set, but the vibration remained. I finally replaced the tires with another brand and the vibration went away for good. This seemed to be a common problem with 20" SRT-8 wheels & tires. Some said they got rid of the vibration by replacing the front tie rods. I did that, but the vibration was still there until I changed the tire brand.

so what tires did you go with?

JohnS 10-02-2011 09:54 PM

Re: New Vibration
 
Quote:

Originally Posted by spiros (Post 493311)
so what tires did you go with?

Yokohama's Parada Spec-X.


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