2005 pontiac grand prix catlyst and evap monitors

john2674
Posts: 4
Joined: Tue Apr 09, 2013 12:17 pm

2005 pontiac grand prix catlyst and evap monitors

Unread post by john2674 » Fri Apr 12, 2013 2:01 pm

Do i have to do the whole GM drive cycle to get the catlyst and evap monitors to read ready everything else is ready i really need to get it inspected.

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carriedi
Posts: 2573
Joined: Wed Apr 10, 2013 12:42 pm

Re: 2005 pontiac grand prix catlyst and evap monitors

Unread post by carriedi » Fri Apr 12, 2013 4:13 pm

yep, fuel has to be over 1/4 tank, should be below 3/4 tank for many tests to run. Some cars need the car to sit overnight to run evap cycles. Ambient temperature will also affect some tests. Just drive normally and it will usually reset in a day or two.
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john2674
Posts: 4
Joined: Tue Apr 09, 2013 12:17 pm

Re: 2005 pontiac grand prix catlyst and evap monitors

Unread post by john2674 » Fri Apr 12, 2013 5:43 pm

Thanks ive been driving it around and on the highway for a few days now and im still waiting.

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