the only difference is that's RPM related with mine.I was about to start a new thread when I noticed this. I too have a manual and noticed something odd lately.
I would describe the sound as a tapping or clicking. Loudness varies sometimes, but frequency of clicking seems constant (not speed or rpm related). Front of the car, maybe off to the right side? It only happens when accelerating. It's very prevalent in 4th and 5th gears when going up hill. For me, it's worst when pushing hard in 4th. Have noticed it to a lesser degree in 2nd and 3rd. No sounds coasting or idling. Only happens in gear.
I'm hoping it's nothing transaxle-related...?
Don't want to detract from Vic's thread, but I also wanted to contribute to what could be a similar issue.
Sorry I couldn't record the noise...It was scary when I drop it on the parking of a mechanic, I drove the car everyday and even push it hard at times nevertheless I waited quite long.Have you checked the fluid levels? If you can record the noise and post it, it would benefit. Tapping, knocking, pinging. People have different ways to describe noises and there are plenty of possibilities. Valve train, bearings, injectors, exhaust, suspension, axles, etc. I even had one customer have a knocking on his Toyota and it ended up being loose bolts on his bumper.
Check for anything loose. If you can't locate it, try a recording and post it.