Low Frequency Vibration

[UMR_Engnr]

My daily driver needs repaired so I've been driving my truck quite a bit. I noticed about a month ago that if I applied a little gas off idle it would start making a vibrating noise. It has gotten worse so that now sitting at idle there is a low frequency vibration and noise and it is just generally noisier to drive. It does still get really noisy off idle like it hits some sort of vibration harmonic.

I was hoping someone could give me a few places to look and let me know if there are common failures that will cause this (i.e. engine mount, harmonic balancer).

 

[79jasper]

If it's a automatic, the flywheel could be cracked.
If it's a manual with the stock dual mass flywheel, it could be worn out. Search the site for testing.
If it's turbo, the downpipe could be touching the firewall. Go along the whole exhaust.
Maybe a engine mount.
Maybe bad injector or few.

Sent from my SM-N960U using Tapatalk

 

[Joe Martin]

Had the same issue. Had 5 bad injectors and needed the pump rebuilt.