Brand new Nissan Titan idle engine shaking at 1900 rpm only. When raving up slowly up to about 1900 rpm, I can feel car shaking slightly. Enough for me to be concerned. Once pass 1900 and into 2000rpm and up, the shaking goes away. Back to normal engine vibration when revving slowly.
Gear is in Park.
what could be causing this?
Well first of all why are you revving it up? Modern cars are all computer controlled. They don't let you rev up engines correctly. If you find it when you take off from a start and it runs totally normal while driving it, I would ignore that. They aren't made to be revved up anymore
@scottykilmer I wasn’t trying to aggressively revving the engine. I was curious to see how smooth or not smooth this V8 is. It was very slow and gradual rev up to 3000 rpm only. I was expecting smooth increase in rpm “slowly” and that’s when I noticed shaking at 1900 rpm.