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Old 01-18-2014, 04:50 AM   #1
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rattling noise when accelaerating

I have a 2010 jeep wrangler unlimited and i noticed when first start accelerating it makes a rattling noise please help

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Old 01-18-2014, 07:43 AM   #2
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Check the welds on the exhaust crossover in front of the transmission #1

It can also be engine ping. Does it only do it before engine gets up to operating temp-or all the time ?
Try running a bottle of Techron in with a tank of gas every few months.

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Old 01-19-2014, 11:41 AM   #3
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I had the same problem that just started with my 2013.

It was actually a loose exhaust clamp between the cats and the mid muffler under the drivers door. I tightened it up and rattle is now gone.
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Old 01-20-2014, 06:39 AM   #4
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Quote:
Originally Posted by kjeeper10 View Post
Check the welds on the exhaust crossover in front of the transmission #1 It can also be engine ping. Does it only do it before engine gets up to operating temp-or all the time ? Try running a bottle of Techron in with a tank of gas every few months.
I also have a rattling noise on 2013 that only appears when the jeep is cold and disappears when gets to an oper. temp. It usually lasts 1-2min. I didn't have this in summer days. Any idea what to look for? Thanks
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Old 02-07-2014, 06:10 PM   #5
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ESA31 was in the right neighborhood. I just had the same problem with my 2014 JKU and it was a cross member that was interacting with the exhaust. The temperature dynamic appears to be a factor.....in cold weather, it does it more to me. It doesn't do it at all unless the engine has warmed up. And it usually only does it on acceleration from a dead stop or a slow speed....and does it more when i barely accelerate. Dealer mechanic listened to me start and stop it in the parking lot so he could narrow down the location and then it took him just 15 min to specifically locate and address the cross member. All fixed......
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