Vibration - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 4 Old 04-20-2010, 01:25 AM Thread Starter
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Join Date: Apr 2010
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Vibration

Getting what seems like a mild vibration from around the gas pedal...other people haven't noticed it but they don't drive it as much as i do obvioulsy...what could it be

Danny

2008 Wrangler X
-3.5" Rubicon Express Lift
-Rancho RS9000XL Shocks
-Rancho High-clearance Steering Stab
-Rugged Ridge Mirror Relocation Brackets
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post #2 of 4 Old 04-20-2010, 07:03 AM
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Need more info.
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post #3 of 4 Old 04-20-2010, 11:52 AM
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vibration

i have also experienced the same thing on my 07 2dr x. between 1500 and 2000 rpm going 35 mph the vehicle will shake. acceleration corrects the vibration. brought it to the dealer and they didn't have a clue.

'07 2 Door
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post #4 of 4 Old 04-20-2010, 12:19 PM
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A few things come to mind:

1/ Pinion angle - If you have aftermarket shafts and the front pinion angle is not good you'll have a vibration and one of the places you'll feel it is in the gas pedal, usually around 50-55 mph when you are on the gas.

2/ Exhaust - If the manifold or manifold-pipe bolts are loose then this can also create a vibration noticeably through the gas pedal. If you have aftermarket skids, there may be contact on the exhaust cross pipe, again more noticeable on acceleration.

3/ Engine vibration - The engine may tend to vibrate a little under certain loads, again this is usually only noticed through the gas pedal. Next time it happens, change gear or hit the OD button and see if the vibration changes (or goes away) with different RPM.

Not sure why these things are felt through the gas pedal more, but I'm guessing it's because the gas pedal is connected to a large block on the firewall and that picks up the vibration.
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