s13 240 wont pass smog check engine light!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

dennydizzo · 05-18-2009, 02:04 AM

i have a '93 240sx and just recently failed smog..passed everything except NOx...my readings were super high...
im thinking it's my egr everything is stock in my car and new spark plug/spark plug wires..

my check engine light keeps coming on during long trips..
but 2-3 minutes after CEL comes on it turns right off..
i was wondering if i can still get the CEL code from my ECU
even if the CEL is off or do i gotta wait til it comes bak on??

btw anyone with a tutorial w/pics of how to remove egr that would help..
any helpful advice will be appreciated..thanks

blackrms13 · 05-18-2009, 12:39 PM

just take out ur ECU and check the code
once the light comes on it will be stored in the ECU

and check FSM on how to take out the EGR

nor-caljdm · 05-18-2009, 01:00 PM

disconnect the battery I think the negative side, then go inside your car and turn the key on fully like you are starting the car, let it sit for 10 to 15mins. It should restart the ecu. It worked for me.

oaznbeasto · 05-19-2009, 12:01 PM

^and press your brake and clutch pedal to do a complete drain!

05-18-2009, 02:04 AM	#1
dennydizzo Zilvia Member Join Date: Jan 2009 Location: SUNNY CA!! Age: 35 Posts: 204 Trader Rating: (4) Feedback Score: 4 reviews	s13 240 wont pass smog check engine light!! i have a '93 240sx and just recently failed smog..passed everything except NOx...my readings were super high... im thinking it's my egr everything is stock in my car and new spark plug/spark plug wires.. my check engine light keeps coming on during long trips.. but 2-3 minutes after CEL comes on it turns right off.. i was wondering if i can still get the CEL code from my ECU even if the CEL is off or do i gotta wait til it comes bak on?? btw anyone with a tutorial w/pics of how to remove egr that would help.. any helpful advice will be appreciated..thanks __________________ LOVIN ME TOOFODEE!!

05-18-2009, 12:39 PM	#2
blackrms13 Post Whore! Join Date: Jul 2007 Location: 626 Posts: 2,591 Trader Rating: (21) Feedback Score: 21 reviews	just take out ur ECU and check the code once the light comes on it will be stored in the ECU and check FSM on how to take out the EGR __________________ 91' 240sx Fastback LE

05-18-2009, 01:00 PM	#3
nor-caljdm Leaky Injector Join Date: Sep 2008 Location: nor cal Posts: 137 Trader Rating: (2) Feedback Score: 2 reviews	disconnect the battery I think the negative side, then go inside your car and turn the key on fully like you are starting the car, let it sit for 10 to 15mins. It should restart the ecu. It worked for me.

05-19-2009, 12:01 PM	#4
oaznbeasto Leaky Injector Join Date: Aug 2008 Location: N/A Age: 36 Posts: 70 Trader Rating: (9) Feedback Score: 9 reviews	^and press your brake and clutch pedal to do a complete drain!