Just fialed the Nevada Emissions Check

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infiniti dude
Posts: 1
Joined: Sun Sep 20, 2009 5:12 pm
Car: 1997 infiniti qx4

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My 97 QX4 just failed the Nevada smog check the other day. The check engine light came on and is giving the p1447 code. I know it's the evap control system but I've been thinking of just resetting the ecu. If that happens and even after the driving patterns have been done will the check engine light come right back on if the problem isn't fixed. I'm low on dough so I'm trying to find the cheapest way to get through the inspection.


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SteveTheTech
Posts: 3751
Joined: Sat Aug 16, 2008 3:20 pm
Car: 15 Nissan Sentra SR
12 Infiniti G37x Coupe
-Formerly-
05 Mazda 6 L3 Sport
95 Infiniti J30
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Location: Chantilly, Va

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First off I would like to Welcome you to Nico, Secondly I'd like to apologize for the delay in response.

Thirdly I'd like to give you a quick bit of information as to how the new emissions tests are performed and how that is going to effect your wallet.

Modern emission tests on vehicles that are OBD-II compliant are performed by using a state employed computer to scan and verify the vehicle. The scan checks the computers set of self tests that automatically to ensure they meet federal guidelines whenever driving conditions permit. If you reset the computer it will not retest the evaporative emissions system until you meet the criteria and if there is a fault the computer will register it even on the first completed drive cycle. Once the fault is detected a second time the check engine light will set for some codes of a non detromental nature. Within the computer there are several small self tests that are part of a larger set of System Rediness Tests. These SRTs are only set when the systems operation has been verified, once one fault is detected the SRT is no longer set and the dtc is stored as pending in the memory.

Unlike some of the older systems there are no "tricks" to cheat the system. The evaporative emissions system has such a small leak acceptance rate that nothing short of fixing the problem will resolve.

I would suggest buying a canister and purge volume control valve over the internet (not used, nothing but new) put the two things together and instal them. After resetting the light I would bet you a beer that the light will go away and you will be able to pass an emissions test.

Good luck and welcome to the group.


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