WHY IS MY BRAKE PEDDLE SO STIFF BUT MY TRUCK DOESN'T STOP ON THE DIME?

  • Tiny
  • Phabio95
  • 1995 Chevrolet Tahoe
  • 199,000 miles

My mastercylinder is full. I bled all for sides but I still don't have good braking even though my brake peddle is really tight. How can I fix it and where should I start?

Thursday, September 22nd, 2011 AT 12:18 AM

4 Answers

  • Tiny
  • BMRFIXIT
  • Expert
  • 19,554 posts

Check brake booster (vacuum)
check rear brakes
check EGR valve is stuck open

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Thursday, September 22nd, 2011 AT 12:22 AM
  • Tiny
  • Phabio95
  • Member

Thanx BMRFIXIT. I tried to check the vaccum. By turning the truck off and pumped the brakes a few times then started it up with the brake peddle still pressed and it didn't drop at all. It stayed stiff even once I turned the truck back off.

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Thursday, September 22nd, 2011 AT 6:54 PM
  • Tiny
  • BMRFIXIT
  • Expert
  • 19,554 posts

When engine start it should drop if not bad booster or vaccum valve on it
check and replace as needed

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Thursday, September 22nd, 2011 AT 7:56 PM
  • Tiny
  • Phabio95
  • Member

I got under the truck and followed the brake line and found out it has rusted out. I only moved it a little bit and it caused a huge leak in the brake line.

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Friday, September 23rd, 2011 AT 5:37 AM

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