# Low hum at accelleration

**URL:** <https://community.cartalk.com/t/low-hum-at-accelleration/38665>\
**Category:** Maintenance/Repairs\
**Tags:** ram, dodge, 1500\
**Created:** [October 27, 2009, 12:07am UTC](https://community.cartalk.com/t/low-hum-at-accelleration/38665 "2009-10-27T00:07:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bigbavarian](https://avatars.discourse-cdn.com/v4/letter/b/59ef9b/32.png) [@bigbavarian](https://community.cartalk.com/u/bigbavarian)\
**Post date:** [October 27, 2009, 12:07am UTC](https://community.cartalk.com/t/low-hum-at-accelleration/38665/1 "2009-10-27T00:07:25Z")

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I have a dodge ram 1500 4x4 and recently it staarted to make a hum when I first accellerate for about 10 - 20 yards. If I let up on the accellerator it stops. The noise is starting to get louder and last a little longer.  
  
  
  
 Is this somethign in the transmission, differential? Or is it something to do with the alignment?  
  
  
  
 Not sure but I want to look at it before I do some real damage.  
  
  
  
 Thanks,  
  
  
  
 Stephen

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**Author:** ![euryale1](https://avatars.discourse-cdn.com/v4/letter/e/41988e/32.png) [@euryale1](https://community.cartalk.com/u/euryale1)\
**Post date:** [October 27, 2009, 12:49am UTC](https://community.cartalk.com/t/low-hum-at-accelleration/38665/2 "2009-10-27T00:49:21Z")

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What year ,what state and how many miles. It could just be a cat converter heat shield. easily fixed with a welder. Also many other parts that may rub on the body if the engine mounts are a bit bad. start with the easy stuff. Trans or differential will be a bit more persistent but the heat shield changes vibration range as each weld fails.

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**Author:** ![bigbavarian](https://avatars.discourse-cdn.com/v4/letter/b/59ef9b/32.png) [@bigbavarian](https://community.cartalk.com/u/bigbavarian)\
**Post date:** [October 27, 2009, 12:50pm UTC](https://community.cartalk.com/t/low-hum-at-accelleration/38665/3 "2009-10-27T12:50:11Z")

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This is a 2002 with approximately 80,000 in upstate new york. The sound doesn’t sound tinny but I will look at that. It also seams like when the vehicle is cold or under a good load you don’t hear it.