Low pressure on pedal when pushing brakes slowly

[e30vert]

When I press the brake pedal down slowly and in a linear fashion it will go very far down and almost touch the floorboard. However , if I press it quickly then the pedal does not go very far and I get good firm pedal pressure. Inspected front pads. Tons of life left. Brake fluid is not low as the light above the console would be on and its not. Rear pads have lots of life left. No leaks anywhere!

Whats going on?

Sometimes I forget and just push the pedal slowly and it goes way down before I can raise the pedal and reapply quicker. Scares me in stop start traffic at times :D

[trent]

Sounds like master cylinder

I would also check the rear shock mounts, those can sometimes cause wierd problems too

[arsevader]

I would also check the rear shock mounts, those can sometimes cause wierd problems too

Is this somekind of inside joke or are you thinking of another thread. :?:

The Rear shock mounts have no impact on the travle of the brake pedal.

James

[trent]

The Rear shock mounts have no impact on the travle of the brake pedal.

Actually, you are incorrect. Bad rear shock mounts create much more "dive" under braking (as the shock isn't working keeping the rear end down). If an inexperienced driver isn't familiar with the car, this extra weight transfer moves more weight to the front wheels making braking less efficient and different feeling. Just saying, its a valid option.

[trent]

Just to prove my point a little more here is a graph relating rear shock mount behavior to breaking effect.



And if you use the radial acceleration formula you can figure this all out...see this

[arsevader]

The Rear shock mounts have no impact on the travle of the brake pedal.

Actually, you are incorrect. Bad rear shock mounts create much more "dive" under braking (as the shock isn't working keeping the rear end down). If an inexperienced driver isn't familiar with the car, this extra weight transfer moves more weight to the front wheels making braking less efficient and different feeling. Just saying, its a valid option.

I buy that but I don't buy that bad RSMs are going to cause the pedal to go the floor, no matter how bad they are.

James

[trent]

The Rear shock mounts have no impact on the travle of the brake pedal.

Actually, you are incorrect. Bad rear shock mounts create much more "dive" under braking (as the shock isn't working keeping the rear end down). If an inexperienced driver isn't familiar with the car, this extra weight transfer moves more weight to the front wheels making braking less efficient and different feeling. Just saying, its a valid option.

I buy that but I don't buy that bad RSMs are going to cause the pedal to go the floor, no matter how bad they are.

James

read my god damn physics proof

[arsevader]

Just to prove my point a little more here is a graph relating rear shock mount behavior to breaking effect.



And if you use the radial acceleration formula you can figure this all out...see this

You lost me at "Just to prove......" ;)

James

[AdamF 88iS]

The Rear shock mounts have no impact on the travle of the brake pedal.

Actually, you are incorrect. Bad rear shock mounts create much more "dive" under braking (as the shock isn't working keeping the rear end down). If an inexperienced driver isn't familiar with the car, this extra weight transfer moves more weight to the front wheels making braking less efficient and different feeling. Just saying, its a valid option.

I buy that but I don't buy that bad RSMs are going to cause the pedal to go the floor, no matter how bad they are.

James

Do you have a sense of humor? Just busting your balls man. Master cyl it is.

[arsevader]

Do you have a sense of humor? Just busting your balls man. Master cyl it is.

Hence my original question about the joke. :D

James

[AdamF 88iS]

Trent = the next Ove Kvam.

And if you know what i'm talking about you are a true OG.

[arsevader]

Trent = the next Ove Kvam.

And if you know what i'm talking about you are a true OG.

I know Ove but I don't know "OG". Maybe I'm just a dumbass.

James

[AdamF 88iS]

Trent is the bomb.

[AdamF 88iS]

Trent = the next Ove Kvam.

And if you know what i'm talking about you are a true OG.

I know Ove but I don't know "OG". Maybe I'm just a dumbass.

James

Original Gangsta. Not one of these newbie mofos.

[arsevader]

Trent = the next Ove Kvam.

And if you know what i'm talking about you are a true OG.

I know Ove but I don't know "OG". Maybe I'm just a dumbass.

James

Original Gangsta. Not one of these newbie mofos.

Awsome, I feel special. I've never been called a Gangsta before.

James