FAILED SMOG TEST PLEASE HELP!

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jedbimcdb
Posts: 2
Joined: Tue Aug 02, 2011 4:01 pm
Car: Nissan Altima 2003 4 cyl

Post

Here are my results

FAULT CODES
P0725 and P0335

%CO2
14.4 AT 15 MPH
14.5 AT 25 MPH

%O2
0.2 AT 15 MPH
0.2 AT 25 MPH

HC (PPM)
MAX 55 / MEAS 50 AT 15 MPH
MAX 39 / MEAS 53 AT 25 MPH

CO (%)
MAX 0.50 / MEAS 0.53 AT 15 MPH
MAX 0.48 / MEAS 0.53 AT 25 MPH

NO (PPM)
MAX 437 / MEAS 2059 AT 15 MPH
MAX 724 / MEAS 1964 AT 25 MPH

Please tell me possible solutions and estimates


Buckshot
Posts: 48
Joined: Thu Dec 09, 2010 9:09 pm

Post

you need a crank sensor and that will take care of your problem. probably have long crank time also.it is located in the back of engine on left side by the motor mount would suggest original equipment if possibly.make sure you look in the connector for oil and clean it out if possible.parts should be about 70 dollars and if you have a auto zone have them clear like and drive it about 1/2 hr on highway should take care of it...

User avatar
the converted
Posts: 2767
Joined: Wed Feb 21, 2007 7:14 am
Car: '99 BMW M3 6.0
'88 Toyota Celica All-Trac (somewhere in Cali)
'20 Toyota Tacoma
Location: Boston

Post

What he said. I am a little concerned with how high the NOX numbers are, but that could be a side effect of the lack of a working crank position sensor.


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