MY POWER BRAKE VACUUM PUMP WONT SHUT OFF

  • Tiny
  • jimelginjr
  • 2001 Chevrolet S-10
  • 108,000 miles

My power brake vacuum pump won't shut off. Even if I shut pickup off. Is the power source to pump constant hot? Trying to figure out if I have a short or pump has a stuck switch.

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Thursday, March 28th, 2013 AT 12:46 AM

4 Replies

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

It may be the relay for the hydravac pump.

Roy

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Thursday, March 28th, 2013 AT 12:48 AM
  • Tiny
  • jimelginjr
  • Member

In the fuse box

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Thursday, March 28th, 2013 AT 12:50 AM
  • Tiny
  • jimelginjr
  • Member

If I pull the abs fuse it shuts off

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Thursday, March 28th, 2013 AT 1:00 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

Ok, not a hydrovac. It is an electric pump for the abs. The unit is most likely the issue. Have someone look in the system with a scanner to see if it is commanded on

Roy

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Thursday, March 28th, 2013 AT 2:03 AM

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