Brakes to the floor

[95yamahasho]

Hi Guys,
Brakes were fine, couldn't shift out of park and no brake lights, replaced BOO switch at the pedal, lights are on, but the pedal goes to the floor, tryed bleeding the brakes, nothing. but if I pump 2-3 times the brakes are great, as soon as i let go of the pedal, next time they go to the floor again. 95 ATX, just over 100k

Paul

 

[Ishodu]

Check for a leak of brake fluid. Or you still have air in the lines yet.

 

[blacklabel]

I'm not sure but my brother has told me if the brake pedal goes all the way to the floor, the master cylinder is bad.

 

[Jaz2099]

I'm not sure but my brother has told me if the brake pedal goes all the way to the floor, the master cylinder is bad.

not necessarily

 

[Jaz2099]

Hi Guys,
Brakes were fine, couldn't shift out of park and no brake lights, replaced BOO switch at the pedal, lights are on, but the pedal goes to the floor, tryed bleeding the brakes, nothing. but if I pump 2-3 times the brakes are great, as soon as i let go of the pedal, next time they go to the floor again. 95 ATX, just over 100k

Paul

I would try bleeding the whole brake system. Master cylinder, right rear, left front, left rear, right front.

 

[95yamahasho]

Thanks for the responses guys. How do you bleed the Master Cylinder??

 

[Jaz2099]

If you look at the master cylinder you'd see two fittings like on the cailpers. Turn 3/4 turn or so depress brake pedal close fitting release,etc.... Think recommendation is doing the front or left one first(left if your on the drivers side looking).

 

[95yamahasho]

Thanks again. You guys are awesome.
Paul

 

[TYSHO]

I've had 2 SHO's do that, it's the switch under the Master Cylinder.

The replacement part number is: F2VC-9F924-AB

Cost: $19.99

I bled my master cylinder and brake lines, didn't help worth a flip. I assume your problem just showed up out of nowhere, too?

It just so happens, one of my SHO's had that switch replaced and got totalled 2k miles later and I have the switch right here. I was thinking of putting it on ebay, but if you need it, let me know. I still have the original box that it came with, everything still looks new!

 

[cougarman]

Could you please tell me, exactly where this switch is located. There don't seem to be any switches under the master cylinder. Thanks.

I've had 2 SHO's do that, it's the switch under the Master Cylinder.

The replacement part number is: F2VC-9F924-AB

Cost: $19.99

I bled my master cylinder and brake lines, didn't help worth a flip. I assume your problem just showed up out of nowhere, too?

It just so happens, one of my SHO's had that switch replaced and got totalled 2k miles later and I have the switch right here. I was thinking of putting it on ebay, but if you need it, let me know. I still have the original box that it came with, everything still looks new!

 

[TYSHO]

Could you please tell me, exactly where this switch is located. There don't seem to be any switches under the master cylinder. Thanks.

My post was made in reply about an ATX, I don't think the MTX's ever had the switch.

 

[cougarman]

Oh, ok. Thanks.