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1990 Lesabre lack of brake power

Tiny
DARKALMAN
  • MEMBER
  • 1990 ALL OTHER MAKES ALL OTHER MODELS
This morning on my way to work I noticed my brakes aren't performing well at all.

I push the pedal down to about half and I get normal performance, but anything past that the car doesn't stop any faster.

Its like 1/2 of my brake power has disappeared.

What should I look for?

How much brake fluid should be in the reservoir?
It looks like just over half at the moment.
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Friday, March 2nd, 2007 AT 1:26 PM

5 Replies

Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Hi,
what happens after half pedal, it it stiff, like real tight, or is the pedal spongy

jim
oh and if the fluid level is low (there are makrs on the side of the res ) do not fill it, there is either a leak or the brakes are worn

jim
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Saturday, March 3rd, 2007 AT 8:03 AM
Tiny
DARKALMAN
  • MEMBER
  • 3 POSTS
How to describe this, after half pedal there's no resistance, The pedal just goes straight to the floor. The car continues to slow down but with only about half the braking force.

The reservoir is at about half, I double checked and I'm well above the min line.

I pulled off all my tires and I can't find a leak in any of the lines.
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Saturday, March 3rd, 2007 AT 10:35 AM
Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
The master cylinder may be leaking internally then

jim
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Saturday, March 3rd, 2007 AT 12:43 PM
Tiny
DARKALMAN
  • MEMBER
  • 3 POSTS
Thanks for the advice

I swapped out the master cylinder, bleed the brakes and my brakes work great.
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Saturday, March 3rd, 2007 AT 5:17 PM
Tiny
CHEVY22
  • MECHANIC
  • 1,375 POSTS
Hey there good deal im glad to hear it, and real glad I wasnt driving near you before lol, glad we could help
jim
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Saturday, March 3rd, 2007 AT 5:20 PM

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