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Old 09-08-2010, 06:09 AM   #1
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Slight Vibration at Idle?

Howdy all!

I'm still getting used to our JK -- I've been stuck in the office all week and haven't been able to drive the rig around very much!

However, I have noticed that it vibrates a little bit when sitting still and idling. I don't detect any fluctuation in RPMs (both from looking at the tach and just by feel). I'm a pretty good mechanic, but my skills don't really extend to anything made much past 1971.

Is this typical or something I should look into? Our Jeep is a 2010 Wrangler Unlimited, 6-speed.

Thanks!

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Old 09-08-2010, 09:11 AM   #2
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The first thing I would check is the heat shield over the fuel tank. Sometimes it touches the body and there is a vibration. It's soft metal and bends easily. The edges are also very sharp. Start there and then check the undercarraige in general. There are numerous parts that can cause vibration.

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Old 09-08-2010, 11:13 AM   #3
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I took it that the OP meant he had a little vibration he could feel from the engine as opposed to something he could hear rattling. I may have misunderstood it though. I have noticed a little vibration at idle also, but I haven't worried about it. Don't know if I should or not.
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Old 09-08-2010, 11:47 AM   #4
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You should worry about vibration at idle in "N", with a stick--delear time to checkitout and get a trouble report, that you may have to use later !!

Vibration at idle with the auto isn't common, but will happen now and then because of torque converter-

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