when i am at a stop and have the car in gear my brake petal vibrates and i hear vibration up front. when its in park it stops. Is it to low rpms?

 

AT or MT?

 

Its a AT

 

I honestly am not sure, I dont really have the experience G's or AT's for that matter. I was mostly assuming that would be an important piece of info for someone else to diagnose with lol.
My best guess would be something to do with the torque converter.
Hopefully someone with more knowledge stumbles onto this thread...
Good luck!

 

I had this problem before, and it turned out that my rotors had been warped from heat & pressure. The dealership was very kind to replace it for free...get it checked out! I have an 08 G35x.

 

i think its rotors 2... i had a warped rotor and when i brake it use 2 vibrate also ...

start off with that .. if not then you take the next step

 

Warped rotors don't vibrate at a dead stop which is what the OP is describing here


Sounds like he's feeling vibrations in the car in the brake pedal, and not actual vibrations from the brakes. I notice that i can feel road vibrations, the stereo and other vibrations in my brake pedal as well. I can feel the click of the a/c compressor...even more after installing aluminum sport pedals.

He can feel vibration when the car is in Driver (under load) that goes away when he shifts to park (under no load) so it sounds to me he might have a rough idle, or an engine/transmission vibration that he is just happening to feel through the brake pedal

 

He didn't say, "Coming to a stop" which I agree would be his rotors. But he said, "At a stop!" If the RPM is set to low, that might contribute to shaking. RPM should be above 600RPM at warm idle, if it's lower do a SEARCH and do the idle reset.
Gary

 

then maybe its the type of gasoline ... regular well sometimes do that to the car..
i had took my car to the body shop and for some reason they put regular since it was low on gas and it was vibrating,,,

or change all the fluids.. if the idle isnt running smoothly i would change all fluids
and then it would prbly run smooth

i could be wrong
let someone with more experience chime on in.

 

If it's shuddering while your moving and using the brakes, thats a no brainer. If it's shuddering while your stopped, your rotors arent moving. So either you mis typed the problem or your rotors are not causing vibration while thier not moving. It is possible there could be a problem with your brake's, but I would expect you would notice a mushy pedal and/or poor braking. You can try putting the park brake on while its in drive and release the brake pedal, if your still getting vibration, it's clearly not your brakes.

If taking it out of a drive gear (park or neutral) solves the vibration, that still leaves alot of possible issues. How low are your RPM's dropping?

 

damn, I walk away for 10 minutes mid post and I come back to finish and my post is already there... lol
Good luck!

 

yeah lol its when i'm stopped not my rotors for sure...i think kinda think its rough idle or like MyGeeeee said maybe the torque converter. I can hear the vibration coming from like under the motor towards the front of the car and only feel it in the brake petal when pressing it. but like i said only when its in gear, when in N Or P it goes away. I was seeing if maybe anyone else has ever hear or had this problem. but thanks for all the post!

 

Ac on?

If it is, next time you feel it turn your ac off and see if it goes away

 

Yeah i tried that too, its something only about putting it in drive. Doesn't do it in any other gears

 

gee, park in an MT?



check trans/motor mount/torque converter/and idle...or maybe the pedal itself!


NGK