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Car will stop on own like brakes are being applied

Tiny
DOBBYGIRL60
  • MEMBER
  • 2005 CHEVROLET EQUINOX
  • 120,000 MILES
2005 chevy equinox brakes get hard if I let foot of gas pedal the car will stop on own like brakes are being applied by them self after driving for a little distance brake will get tight like they are being applied on there own sometimes if you turn car off and let sit for a bit the car is normal then after driving for about 15 miles it will start again. There was no lights coming on dash to show any problems. I work for nissan dealer they pulled abs fuse to see if lproblem still occurs and after driving the brake pedal will get very tight but does not force brakes on.
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Sunday, January 22nd, 2012 AT 2:43 PM

3 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
U will need to check for a vacuum leak and the vacuum at the booster.U can rent a gauge at the parts store.
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Sunday, January 22nd, 2012 AT 3:55 PM
Tiny
DOBBYGIRL60
  • MEMBER
  • 2 POSTS
Ok I have changed the brake booster and the brake pedal still gets hard after driving for a few miles what else could cause this problem?
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Wednesday, January 25th, 2012 AT 1:26 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
I need to know what the vacuum reading is when your problem happans. Stop throwing parts at it. If the vacuum is low there is no part that will fix it.
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Wednesday, January 25th, 2012 AT 6:48 PM

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