Vibration under car / in gas pedal

[98mitsubishigst]

I am having the weirdest vibration which seems to be felt most in the gas pedal..

I drove to the dsm shootout and the whole time i felt a vibration in the pedal, but i can't tell if the vibration is coming from directly below on the floor in the front of the car, or if my rear end is vibration the whole floor of my car..

The vibration DOES NOT happen at idle when i rev the car, and the feeling i can describe this as close as i can to is.. When your driving down the road and you hit a pot hole or a bump in the road, you can feel the bump very defined like through the gas pedal.. Not sure if this makes any sense..

I have since replaced, FRONT passenger wheel bearing, FRONT passenger tie rod, FRONT passenger ball joints, and REAR passenger toe arm.

I have tried my old set of wheels just to see if a wheel was bent and nothing changed..

I can't figure out where to go..

 

[black97spyder]

Are you still on the stock engine mounts? Sounds like they need replaced..

my 97 spyder was the same way, replaced the engine mounts with poly inserts and problem solved :thumbç

 

[98mitsubishigst]

i do have all stock motor mounts, but i just replaced them all.. =/ And it never did it before with the old motor mounts, and nothing changed when i swapped out the old ones with the newer ones..

 

[keston95GS-T]

Could be a small vacuum leak. Its smooth at idle but when the car is under load, it acts up. Check your vacuum hoses

 

[Lofty]

How tight is your throttle cable? If its too tight I could picture the motor pulling on the cable.

 

[jdezmit]

Front diff bearings going bad? Mine are starting to go, developing a vibration.

 

[Insane20]

Dose it only happen when hitting bumps?

 

[Trilogy Turbos]

Did you put OEM mounts? Exhaust touching chassis somewhere? As someone said up there, throttle cable too tight.

Regards;

TRILOGY TURBOS