I have a 2021 Ram 1500 5.7, no eTorque. It has about 15K miles on it. I recently changed the oil for the second time (Pennzoil Ultra Platinum 5W-20) and installed a Pacbrake oil filter relo kit. No leaks or anything like that, and my temps and pressure are normal.
Just a few days ago, I noticed that if I accelerate quickly (not full throttle, but faster/harder than I normally do, such as when pulling out in traffic or going up an on ramp), the truck starts making a humming noise AFTER I come off the gas. For a description of the sound, the first time it happened, I legitimately thought there was Honda Civic with an exhaust can or a sportbike next to me and got all confused when I couldn't find anything in my mirrors. Subsequently, I noticed that the sound can be felt through the steering wheel and gas pedal - not like something is physically vibrating those things, but like they are transmitting vibrations coming from the engine compartment.
Here's a video -
. The noise starts at ~1:30 mark, after I accelerate hard.
I didn't show it in the video, but I checked my tire pressures just to be safe and all four were showing 37 PSI. I'm in NJ and it's been a bit colder, but not crazy - more or less mid-20s to mid-30s. As I mention in the video, the sound doesn't seem to be dependent on the truck being warm or cold. The sound is also not correlated with throttle position or truck speed. As an example, I have a long driveway and accelerated hard down my driveway. The sound happened just like in the video, and it continued at the same frequency/volume until I slowed (using the brakes) to about 2MPH and then it just abruptly stopped.
For what it's worth, I haven't felt any shuddering or slipping or hard shifts or anything like that.
Any ideas? Thanks.
Just a few days ago, I noticed that if I accelerate quickly (not full throttle, but faster/harder than I normally do, such as when pulling out in traffic or going up an on ramp), the truck starts making a humming noise AFTER I come off the gas. For a description of the sound, the first time it happened, I legitimately thought there was Honda Civic with an exhaust can or a sportbike next to me and got all confused when I couldn't find anything in my mirrors. Subsequently, I noticed that the sound can be felt through the steering wheel and gas pedal - not like something is physically vibrating those things, but like they are transmitting vibrations coming from the engine compartment.
Here's a video -
I didn't show it in the video, but I checked my tire pressures just to be safe and all four were showing 37 PSI. I'm in NJ and it's been a bit colder, but not crazy - more or less mid-20s to mid-30s. As I mention in the video, the sound doesn't seem to be dependent on the truck being warm or cold. The sound is also not correlated with throttle position or truck speed. As an example, I have a long driveway and accelerated hard down my driveway. The sound happened just like in the video, and it continued at the same frequency/volume until I slowed (using the brakes) to about 2MPH and then it just abruptly stopped.
For what it's worth, I haven't felt any shuddering or slipping or hard shifts or anything like that.
Any ideas? Thanks.