THE CAT EVAC SYSTEM WILL NOT GET READY FOR IT ...

  • Tiny
  • dom.r.matra
  • 2004 Chevrolet Silverado
  • 95,000 miles

The cat & evac system will not get ready, for it to pass inspection. Is this the cause of a bad 02 sensor?

Friday, October 19th, 2012 AT 11:00 PM

7 Answers

  • Tiny
  • saturntech9
  • Expert
  • 28,394 posts

Do you have any codes?Did you unhook or replace the battery recently?

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Friday, October 19th, 2012 AT 11:01 PM
  • Tiny
  • dom.r.matra
  • Member

I did unhook the battery

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Friday, October 19th, 2012 AT 11:16 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,394 posts

How many miles have you driven it since then?Thats why the monitors arent set from the battery unhooking.

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Friday, October 19th, 2012 AT 11:46 PM
  • Tiny
  • dom.r.matra
  • Member

I've driven it 149 miles.

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Monday, October 22nd, 2012 AT 10:13 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,394 posts

So the evap and the cat monitors are the only ones that haven't set yet?

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Tuesday, October 23rd, 2012 AT 4:04 AM
  • Tiny
  • dom.r.matra
  • Member

Yes.

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Tuesday, October 23rd, 2012 AT 12:39 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,394 posts

Step 3 is for the evap monitor and step 4 is for the cat monitor the evap monitor is hard to set sometimes the cat monitor is a lot easier to set. You have to do those steps many times sometimes depending on where you live sometimes they will let you pass smog with one monitor unset.

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Wednesday, October 24th, 2012 AT 4:07 AM

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