[mohsinazmi]

Hello,
As the title states, I feel like a slight vibration at 2100 RPM in 7th gear and 80 mph. I can recreate it every single time by setting it on cruise control and it comes on every other second. It feels like something is coming on and then shutting off but it only happens when your not mashing the gas. I have felt the same vibration in older cars but not in newer cars. I have about 14K miles on the car with PSE.

Thanks for the feedback!

 

[johan]

A long slong shot, have disconnected the sound aktor?
Could be that you feel.

 

[GregW]

My Boxster has a *slight* vibration at about 2100 rpm with medium load. I know the 4 cyl boxer engine is not as balanced as others and some slight vibration is normal so I never paid it any attention. It goes away at other speeds/revs.

 

[mohsinazmi]

@johan - Yes I have the sound aktor disconnected. I also upgraded the lights to 35w from the original 25w. I have driven with the lights all the way off so I know it isn't caused by the lights.
@GregW - is the vibration on-going if you keep it at 2100 RPM at medium load. Like a vibration going thru the car, stop and then does it again? Mine almost feels like how my 99' maxima felt when the compressor's clutch was bad and it wasn't engaging.

I'm going to reach out to my SA to see whats else it could be.

 

[982CS]

Another shot in the dark...could it be the PSE valve? Like many, mine rattles / vibrates at just over 2000rpm (as the valve open).

 

[GregW]

@GregW - is the vibration on-going if you keep it at 2100 RPM at medium load. Like a vibration going thru the car, stop and then does it again? Mine almost feels like how my 99' maxima felt when the compressor's clutch was bad and it wasn't engaging.

I'm going to reach out to my SA to see whats else it could be.

My vibration is very slight (I can only sense it if I focus on it) and to my mind clearly engine rpm and load connected--it's constant in those conditions and doesn't fluctuate. My V8s did it, my V2s did it, my Subaru's did it. If it's not like that with yours then do get it checked.

 

[johan]

Our cars do have virtuell gears.
It slips the clutch but the manuel does not say when ....
But your using the Cruise when you feel it, mayby!?


Is the start/stop On or Off when you feel it?

 

[mohsinazmi]

@982CS - You could be right. Can I turn off the PSE and not feel it? or is it a constant. I also don't think I ever felt it before.
@GregW - Thank you for the insight. I think I'm going to get it checked out as just a precaution b/c earlier this year I found out that Porsche had left one of my motor mounts unbolted. I only found out when I heard a shaking noise when the engine was revving high.
@johan - The Start/Stop was on last time i felt it. I'll try driving it tonight without start/stop engaged.

I appreciate all of the feedback! this forum is pretty amazing.

 

[982CS]

@982CS - You could be right. Can I turn off the PSE and not feel it? or is it a constant. I also don't think I ever felt it before.

Just press the PSE button in the centre console to switch it off. If you don't hear it you've found the problem. There's a thread here about it.

 

[johan]

I cant see how the rattle from the valve could such a vibration, well if you have a sensitiv butt maybe you could
Also, we know that the valve opens at 2000rpm but is it the same when your up to speed?
On older Boxsters/Caymans tha valve opend above 50km/h in Europe and if i remember correct US models did not have the same "limitation"

 

[Irish 718]

@982CS - You could be right. Can I turn off the PSE and not feel it? or is it a constant. I also don't think I ever felt it before.

@GregW - Thank you for the insight. I think I'm going to get it checked out as just a precaution b/c earlier this year I found out that Porsche had left one of my motor mounts unbolted. I only found out when I heard a shaking noise when the engine was revving high.

@johan - The Start/Stop was on last time i felt it. I'll try driving it tonight without start/stop engaged.

I appreciate all of the feedback! this forum is pretty amazing.

 

[Irish 718]

Mohsinasami I have the same problem just started at 11000 miles on a 2017 2.0 Cayman ... after all the feedback three months back , what was the problem and is it now rectified ? Any help most welcome as you said you can’t unhear or unfeel it ! Neil ( Dublin , Ireland )

 

[mohsinazmi]

@Irsh 718 - the dealership thinks its cause of low load on the engine. We did tire balancing and alignment which solved 90% of the problem.

 

[Irish 718]

Thanks Mohsinazmi , I’m going to Porsche this Friday morning and I will say that to them .... appreciate your reply !
Neil , Dublin , Ireland .