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1998 Chevy Tahoe vehicle chugs when applying brakes

Tiny
TTJOHNS
  • MEMBER
  • 1998 CHEVROLET TAHOE
Brakes problem
1998 Chevy Tahoe V8 Four Wheel Drive Automatic

I was wondering if you would have any idea why when I apply the brakes it sounds like a lot of air pressure under the dash and the vehicle chugs, the rpms fluctuate, and the pedel is kinda hard to push?
Sensor, airleak in the system, vacumm leak, elctircal?
I don't know where to look anymore. Fluid is full, no leaking fluid.
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Monday, July 20th, 2009 AT 4:27 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
It sounds like the power brake booster is bad and leaking vacuum. What you need to do is a vacuum test on it. If the booster is good, it will hold vacuum. If it is bad, it won't. Also, make sure the large vacuum hose going to it is good and not damaged, dry rotted.

Let me know what you find.
Joe
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Tuesday, July 21st, 2009 AT 11:26 PM
Tiny
TTJOHNS
  • MEMBER
  • 2 POSTS
Thank you I ended up figuring it out and fixing it. It was the pow brake booster so you were right.
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Wednesday, July 22nd, 2009 AT 10:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I'm glad you got it fixed. Let us know if you have questions in the future, and thanks for using 2carpros. Com

Joe
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Wednesday, July 22nd, 2009 AT 11:00 PM

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