kpfury

Hi all! New GS350 F-Sport AWD (nebula gray) owner here. Literally picked up the car 2 days ago and barely have 100 miles on it.

I took her out and was revving the engine last night (while in Park) to hear the exhaust/engine, and I think when the tach hit the 5-6k RPM mark, the car started shuddering and vibrating as it was revving up.

1) Was it bad for me to rev her up this high so early in the break-in period? I only did it for a few seconds, and never touched redline.

2) Was the shaking/shuddering at the higher RPMs normal?

3) The car seems oddly loud at idle, almost like a sputtering sound, is this normal as well? I think I read somewhere that it sounds almost like a diesel, but not sure...

Love the car overall and the F-Sport package, but I hate the retarded remote start w/ the auto-shutoff and the inability to mute navi guidance while on bluetooth phone.

Thanks!

4TehNguyen

iTrader: (1)

The ticking sounds you hear at idle are the high pressure injectors. Normal for this engine and all the IS350s out there

kpfury

Ah ok. Is the engine shuddering/shaking at higher rpms while in park normal?

Dukeaudio

Was the engine warmed up to operating temp?

kpfury

Yep was warmed up and sitting in idle for at least 5-7 minutes. I read somewhere (might've been a benz forum) that the shuddering might be the rev limiter kicking in to prevent engine damage...

Needsdecaf

No. Not normal.

Dukeaudio

I am not an expert mechanic but not sure idling 5 to 7 minutes is warm enough to rev at redline. The only times my cars have 'shuddered' were under heavy throttle w/cold engine, and at redline (limiter). If shuddering at other times I would have it checked.

ItzFilyO

Mine does that too when I let go just before it hit the redline when free revving in P.