Harmonic balancer?

[GTA_V6_Mustang]

Ok guys well I have like a whirring sound coming from the motor that i can feel threw the shifter. If I am in neutral and rev you dont hear it but you can sort of hear it at high RPM's VERY VERY faintly, but it seems that the engine's revs hold back I am not sure. It does rev up all the way though. I have no idea. But when the engine is in gear and reaches a high RPM like after 5k RPM its really felt. I had someone tell me it could be the engine mount, but I also had someone tell me it could be the harmonic balancer. To check it they told me to look at it and rev it and see if i see it whobbling around at all and well I dont its super smooth. And i dont see vibrations from there. Also I hear some symptoms are leaking oil from that front seal and I am not leaking any oil. What do you guys think?

 

[SeventyMach1]

It doesn't do it in neutral .... but it does in gear at higher RPM's.


Sounds like something in the driveline to me. Driveshaft may be out of balance. Stick around for more ideas, though.

 

[SeventyMach1]

BTW, do you suspect that the "whirring sound" from the engine area and the "vibration" through the shifter are related?

 

[GTA_V6_Mustang]

I suspect they are related, but I thought at first it could be the driveshaft also, but it is only consistent with RPM's. If I drive it any anyspeed at low RPM's it wont do it, but as soon as its at higher RPM's under load it does it. I am just super worried that if it is the harmonic balancer I am going to damage the crank and then I will be super ****ed... I want to get it while its a small problem.

 

[urban96]

if its not in neutral, and not speed orientated i would think its something with the trans itself

 

[BlackVert]

A bad HB would cause vibrations all throught the rpm range, even in neutral sitting in the driveway. i'd look into the driveshaft and u-joints first

 

[Ronman]

i had a similar problem when i changed my rear gears. ended up being bad u-joints. guess they just got way stressed with the new gear, they were the originals though. eventually got worse and worse will speeding up. if they are not new or you dont know i'd swap em, their a cheap part. same for the balancer, i changed mine because you could actually see it coming apart. didnt feel any vibration though.

 

[GTA_V6_Mustang]

Well it does make sense, when I punch it, You really feel it, and the other night when I couldnt fight the temp. I moved it around the driveway(because I still havent gotten the Tag) but yea When I dumped the clutch at a low RPM I felt it. I need to get under the car and check it out. But I wont have a chance to this weekend, or probably till I get a tag and insurance for the car and can get it to work and get the car up on the lift and just fix it there if thats it.