Check Engine Light ON!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

hk240sx08 · 03-01-2009, 11:25 PM

hey zilvians

i got a question for tech guys out there, i have a stock ka24de with 131k and a 3 inch catback exhaust. The car was running good, then i took out the silencer to my exhaust to test it out. When i drove it around, the CHECK ENGINE LIGHT comes on and i was like O.o I checked the light out, and it gave me "knock sensor (34)" and "egr malfunction(32)" code and its been on since even with silencer back on. My question is

Oh, the car is running okay, i dont feel any difference in performance, i think.

-Are these codes something i should really consider fixing or getting it checked out? will it affect my car in performance and safety wise?

-What do you guys suggest or what would you do?

Appreciate the help

ChicagoS14 · 03-01-2009, 11:35 PM

More then likely the loud exhaust is causing the knock sensor to act up. Sometimes loud noises can cause knock sensors to go crazy. Also the EGR code could have something to do with your emissions system. Seeing as your in Cali I would have it checke dout since you guys have smog. I no longer have emissions on my car as in Chicago 95 and older dont get tested so I yanked all my stuff off. Never gave me a code though, but im OBDI, wat about you?

Anto · 03-01-2009, 11:38 PM

My EGR code came up when I put a test pipe in. The system needs backpressure to function correctly.

hk240sx08 · 03-01-2009, 11:51 PM

im also obd 1

wow, the answers you guys gave me or making sense haha

so what if i keep driving the car with no silencer? will it screw with anything? or just screw with my mind (the light) LOL

appreciate the help

hk240sx08 · 03-02-2009, 12:05 AM

also another question, is there anyway to remove the lit check engine light??

*MILK* · 03-02-2009, 08:52 AM

Delete it with a code reader if you have one.

amdnivram · 03-02-2009, 09:04 AM

my cluster didnt have a bulb for the cel =) hahahaha you can always do that if you dont have a code reader. I did put a bulb back in, and the cel is off =)

DDDsquad_s13panda · 03-02-2009, 09:13 AM

restart your ECU. it should delete you code for a few miles... or maybe for awhile.

unplug pos. side, pump your brakes couple times, then plug it back in. that always does the trick for me.

03-01-2009, 11:25 PM	#1
hk240sx08 Leaky Injector Join Date: Jun 2008 Location: Los Angeles Posts: 112 Trader Rating: (1) Feedback Score: 1 reviews	Check Engine Light ON!! hey zilvians i got a question for tech guys out there, i have a stock ka24de with 131k and a 3 inch catback exhaust. The car was running good, then i took out the silencer to my exhaust to test it out. When i drove it around, the CHECK ENGINE LIGHT comes on and i was like O.o I checked the light out, and it gave me "knock sensor (34)" and "egr malfunction(32)" code and its been on since even with silencer back on. My question is Oh, the car is running okay, i dont feel any difference in performance, i think. -Are these codes something i should really consider fixing or getting it checked out? will it affect my car in performance and safety wise? -What do you guys suggest or what would you do? Appreciate the help __________________

03-01-2009, 11:35 PM	#2
ChicagoS14 Zilvia Addict Join Date: Aug 2004 Location: Chicago Age: 38 Posts: 695 Trader Rating: (6) Feedback Score: 6 reviews	More then likely the loud exhaust is causing the knock sensor to act up. Sometimes loud noises can cause knock sensors to go crazy. Also the EGR code could have something to do with your emissions system. Seeing as your in Cali I would have it checke dout since you guys have smog. I no longer have emissions on my car as in Chicago 95 and older dont get tested so I yanked all my stuff off. Never gave me a code though, but im OBDI, wat about you? __________________ 95 240SX 1JZGTE \| SC300 2JZGE daily www.240sxguide.com

03-01-2009, 11:38 PM	#3
Anto Zilvia Addict Join Date: Jan 2006 Location: California Posts: 862 Trader Rating: (2) Feedback Score: 2 reviews	My EGR code came up when I put a test pipe in. The system needs backpressure to function correctly. __________________

03-01-2009, 11:51 PM	#4
hk240sx08 Leaky Injector Join Date: Jun 2008 Location: Los Angeles Posts: 112 Trader Rating: (1) Feedback Score: 1 reviews	im also obd 1 wow, the answers you guys gave me or making sense haha so what if i keep driving the car with no silencer? will it screw with anything? or just screw with my mind (the light) LOL appreciate the help __________________

03-02-2009, 12:05 AM	#5
hk240sx08 Leaky Injector Join Date: Jun 2008 Location: Los Angeles Posts: 112 Trader Rating: (1) Feedback Score: 1 reviews	also another question, is there anyway to remove the lit check engine light?? __________________

03-02-2009, 08:52 AM	#6
MILK Join Date: Mar 2008 Location: ! Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	Delete it with a code reader if you have one.

03-02-2009, 09:13 AM	#8
DDDsquad_s13panda BANNED Join Date: Dec 2007 Location: Fontana, IE. Age: 38 Posts: 550 Trader Rating: (7) Feedback Score: 7 reviews	restart your ECU. it should delete you code for a few miles... or maybe for awhile. unplug pos. side, pump your brakes couple times, then plug it back in. that always does the trick for me.