Fluctuating RPMs, possible clogged catalytic converter

Tiny
LARRY SUMBRYEL
  • MEMBER
  • 2004 CHEVROLET SUBURBAN
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 273 MILES
I changed my calibers, but the brake was burning. My rpm jump up and down seems that the catalytic converter is stopped up.
Monday, January 25th, 2021 AT 4:21 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,124 POSTS
Hi,

Is the issue with the brakes burning or an engine-related issue? If you replaced the caliper and the brakes are stuck, I need you to try something. When it is stuck, open the bleeder on the brake caliper and see if it releases.

Do that and let me know what happens.

Take care,
Joe
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Monday, January 25th, 2021 AT 8:11 PM
Tiny
LARRY SUMBRYEL
  • MEMBER
  • 3 POSTS
The wheel sensor is bad.
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Monday, January 25th, 2021 AT 9:06 PM
Tiny
LARRY SUMBRYEL
  • MEMBER
  • 3 POSTS
The brakes are no good.
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Monday, January 25th, 2021 AT 9:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,124 POSTS
Do you know what caused the pads to stick and burn up? With new calipers, you shouldn't have an issue with the brakes. As far as a wheel speed sensor, here is a link that explains how to replace one. If you know which one is bad, let me know and I can give you more specific information.

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Here are a couple links explaining how to replace a brake caliper, brake pads, and rotors:

https://www.2carpros.com/articles/brake-caliper-replacement

https://www.2carpros.com/articles/how-to-replace-front-brake-pads-and-rotors-fwd

______________________________

Let me know if this helps or what I can do to help.

Take care,
Joe
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Tuesday, January 26th, 2021 AT 2:59 PM

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