Driveline noise with light acceleration

[Ram_Man34]

When accelerating lightly I occasionally get a noise between 1-2k RPMS. It is low rumble noise from the driveline, only happens when I lay into the gas pedal lightly. If I gas it harder the noise goes away or let off the same regardless of speed or RPMS although usually only happens at low RPMS. Sounds like from the rear but the sound resonates throughout the vehicle so hard to say for sure.

The best way I can explain the noise is that it is the same noise a vehicle with a manual transmission makes when going too slowly in 2nd or 3rd. Except that this is an auto transmission. So maybe just the same thing happening?

I plan to figure this out and maybe have a more experienced friend take a listen, before I dig into it any Ideas what this might be?

 

[Ram_Man34]

98' Dodge Ram 1500 Rear driveline noise (1/2)

Any Ideas what this could be? Happens during light acceleration, often when going up a slight incline. 1998 2nd Gen Dodge Ram Auto transmission 4x4.(1/2)

youtu.be

98' Dodge Ram 1500 Rear driveline noise (2/2)

Any Ideas what this could be? Happens during light acceleration, often when going up a slight incline. 1998 2nd Gen Dodge Ram Auto transmission 4x4.(2/2)

youtu.be

 

[jws123]

Cant really hear anything over the loud exhaust leak sounds like your manifolds did you check things like ujoints rear diff fluid trans fluid ect? Unless the exhaust manifold leak is the noise you are talking ab.

 

[Ram_Man34]

Cant really hear anything over the loud exhaust leak sounds like your manifolds did you check things like ujoints rear diff fluid trans fluid ect? Unless the exhaust manifold leak is the noise you are talking ab.

I listened to the videos, can only hear the noise in the first one.

I did find something concerning, the transfer case has 2 mounting bolts underneath it, one was loose and the other one is missing.
The exhaust leaks are there but thats not the noise. Differential, transmission and transfer case are all full. Transmission is a bit over full.
I haven’t checked the u-joints thoroughly yet.

The headers have had exhaust leak issues due to the fastening bolts backing out, when i got it a few years exhaust leak was very bad. I took it in to my friends shop and he fixed the issue by getting them machined flat but Ive had to retighten the bolts a couple times since.

 

[Ram_Man34]

A little update, had a friend take a look and it sounds to him like the noise is from the torque converter.

 

[Yeret]

I've actually had a similar noise/rumble for a few years now in mine. Pops thinks it's the torque converter as well, but I'm just not sure. Is there any way to "test" a torque converter?