2004 Toyota Land Cruiser — buzzing noise only at one engine RPM

Intermittent stuff lies if you only catch it once. Move a coil or plug on the 2004 Toyota Land Cruiser if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. On “buzzing noise only at one engine rpm,” that was the fork that mattered for me. Post the numbers (or the code) and people can get more specific. Not driving it hard until I know more.

I'd want a measurement, not a hunch. Two 2004 Toyota Land Cruisers can feel identical and have different causes, so measure before you copy someone else's repair. That's the branch I'd chase this week. Verbal 'we'll take care of it' is not a plan. I'd rather be boring and correct. Video is ugly but it shows the hesitation.

This is usually cheaper to test than to guess. Write temp, speed, and in-gear vs coast when the 2004 Toyota Land Cruiser does it — then decide on parts. Don't erase codes until someone who can help has seen them. That's the whole play. Next check is the cheap one I can do in a driveway.