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Passing smog

Tiny
ALEXTTT
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
So I recently replace my battery and I need to pass smog. How long do I need to drive the car to cycle it?
Monday, February 24th, 2020 AT 4:26 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

You will need to drive the vehicle for about 2 hours. You need to go on a highway and 55 MPH for at least 10-15 minutes. Then increase speed and drop back down to 55. Do this several times.

You cannot touch the brakes at any time or the testing is aborted.

Do this 3 times and then check the monitors.

Roy
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Monday, February 24th, 2020 AT 5:00 PM
Tiny
ALEXTTT
  • MEMBER
  • 59 POSTS
I have obd evap and obd exhaust gas monitor not completed.
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Monday, February 24th, 2020 AT 5:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Gas monitor? Can you post a picture of what you see? There is no gas monitor.

Roy
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Monday, February 24th, 2020 AT 5:24 PM
Tiny
ALEXTTT
  • MEMBER
  • 59 POSTS
Here's the photo:
Image (Click to make bigger)
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Monday, February 24th, 2020 AT 5:43 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Okay, do the drive cycle I suggested. That should set the catalytic converter monitor.

The evap monitor will run after an 8-hour sit overnight. Start in the morning and drive it for about 5 miles and then recheck the monitor.

Roy
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Monday, February 24th, 2020 AT 5:46 PM

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