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Unread 04-28-2011, 09:50 AM   #1
armystrong68w
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2008 MK Patriot 
 
Join Date: Nov 2010
Location: West Boylston, MAssachusetts
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Grinding/rubbing noise

I have a grinding/rubbing noise coming from my transmission. Its not constant and only happens after a long drive. Its not very loud either. i wouldnt be able to get it on a video or recording. It sounds like it is coming from the front of the car and gets louder when the clutch is depressed. and only sometimes occurs if the clutch is not depressed.

any ideas on what this could be? I only have 39k and i shouldnt need a new clutch by now!!

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Unread 04-29-2011, 08:04 AM   #2
armystrong68w
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really..nothing....ok?
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Unread 04-30-2011, 04:19 PM   #3
armystrong68w
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Gramps any ideas? anyone any ideas?
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Unread 05-01-2011, 04:59 AM   #4
Gramps
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I have been thinking on it and haven't come up with much, sorry!

Does it change with engine speed or rolling speed? Say you're doing 40 or so and put in the clutch, does tone or duration change between the time the RPM's drop off and the speed comes down?

Does it only do it when you're rolling? Can you drive next to a wall or something that will reflect to noise back and make it more distinct? Does it do it at idle? Could it be an accessory that's on the serpentine belt?
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Unread 05-01-2011, 09:09 AM   #5
armystrong68w
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Location: West Boylston, MAssachusetts
Posts: 194
Great questions!

- You can NOT hear it or it does NOT make the noise when not at a stop or SLOW role. any speed ie 5-10mph it cant be heard

-it does seem to be speed dependent if the jeep is in Neutral and i press the gas it does speed up but does not get much louder.

- With the wall thing... My old VW had a throwout bearing problem that you could hear much better when driving next to a wall/guardrail...but with this you cant really hear a difference because its so quiet to begin with!!!

thanks for the help
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Unread 05-02-2011, 07:11 AM   #6
Gramps
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I'm still thinking on this. Anybody want to jump in feel free.

There are different pressures put on the parts (gears mostly) between accelerating/decelerating. It's whether you're in contact with the front side or the back side of the gears. It may just have to do with a break in period. Didn't you just have your transmission worked on?
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