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Sounds like driving on stripped asphalt (transmission issue?)


Charlieo132

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Posted

Driving down the road and randomly the truck will kinda sound like its driving on stripped asphalt (the sound your tires make against the ground). I don't lose power and everything seems fine but the sound is far from normal. It kinda sounds like the truck is in 4 wheel drive. Will occur a little bit and then either a bump in the road will fix the issue or will randomly stop on its own. This has occurred 3 times in the last two days. Approx. 100 miles driven and the issue has shown up for approx. .5 miles (with all 3 occurrences combined).

 

Has anyone experience this type of issue and can help me explain it better? I have an appointment tomorrow afternoon and doubt they will be able to replicate.

 

The last time I had my oil changed was in Sept and all the current updates to that point was applied then.

 

2014 z71 5.3L 16K miles

  • 2 weeks later...
Posted

I wonder if this could be an issue with the driveshaft. I have seen driveshafts with a vibration dampener mounted to the driveshaft with a rubber ring underneath. It was a heavy weight mounted onto rubber base that goes onto the driveshaft and absorbs the low rpm high torgue harmonic vibrations.

I had a Thunderbird where the driveshaft was bent and had to be straightened and the balancing guy talked me into letting him remove the vibration dampener. Boy did I ever regret that decision. At low RPM High Torque the vibration could be felt and heard YES it FEELS AND SOUNDS just like what my 2014 Truck does. Now I have not actually crawled under my new truck here and checked to see if it already has the dampener on the driveshaft? I am just assuming that there is NOT a dampener on these 14 and 15 trucks driveshafts because of the sound and feel in low RPM High torque situations. It is Cold and Snowing outside LOL maybe someone with a garaged unit could check for a driveshaft dampener and post some pics?

 

I found this info on a Jeep forum those guys are constantly changing drivelines and trying to cure vibration problems.

Quote "All mechanical things have a harmonic frequency they like to resonate or vibrate at. With the introduction of the new 42RLE tranny, the resonant frequecies of the 6 cyl and the tranny in OD now basically match. When two harmonic frequencies match up they will amplify each other. Before the frequecies of the tranny and engine were different and each large mass helped kill the harmonic frequency coming from the other. Now they amplify each other and make it a problem that has to be addressed by the addition of the dampener."

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