Need help failed smog... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

SpdElemts · 11-18-2004, 07:37 PM

Hi guys, I went to get my car smogged and i failed...Here are the results:

Mph-15 Rpm-2841 %co2-14.4 %o2-0.8 HC(PPM) max-88 ave-21 meas-42
CO(%) max-0.52 ave-0.06 meas-0.06 NO(PPM) max-704 ave-150
meas-1707
Mph-25 Rpm-2796 %co2-14.3 %o2-0.8 HC(PPM) max-53 ave-13 meas-30
CO(%) max-0.50 ave-0.05 meas-0.03 NO(PPM) max-738 ave-136
meas-1702

Well there are the results. I checked my EGR crap and everything is working. When i rev the engine the EGR doesnt really open but it does move, maybe like 1/4 of an inch. When i push on the plunger the engine does also die. I tested the EGR and Backpressure transducer and it is functioning. I also tested the EGR temp sensor and it is not within specs with the Resistance when cold or hot, can this cause the problem? I also had the check engine light on the other day with diagnostic code 32 but it went away and never came back on after i cleared the codes.

Thanks

Ritz S14 · 11-18-2004, 07:39 PM

If your car has more than 160k miles, I would say check your cat.

Where in Nor cal are ayou?

SpdElemts · 11-18-2004, 07:59 PM

Your Probably right..my car has 157k on it. I am in the san jose area. BTW what would a faulty egr temp sensor cause?

Ritz S14 · 11-18-2004, 08:04 PM

Quote:

Originally Posted by SpdElemts

Your Probably right..my car has 157k on it. I am in the san jose area. BTW what would a faulty egr temp sensor cause?

egr temp sensor just notifies you that your egr is clogged.

SpdElemts · 11-18-2004, 08:09 PM

So should i worry about my faulty temp sensor?

Ritz S14 · 11-18-2004, 08:13 PM

If you beat on your car often, and neglect maintainence. I would believe that your cat may need to be replaced.

If your temp sensor is bad, it'll throw a code.

SpdElemts · 11-19-2004, 08:05 PM

Should the egr valve open all the way when i rev the engine to around 3500 rpm? Because it only opens alittle and then closes. The weird thing is that when i test the vacuum from the transducer it gets enough vacuum to open the egr valve fully.

Ritz S14 · 11-19-2004, 08:08 PM

WHere in nor cal are you?

EGR should not open all the way when you rev. It "shutters". The only way for the egr to stay open is while you're cruising.

SpdElemts · 11-19-2004, 08:09 PM

I am in the san jose area

Opps i meant hold the throttle open to around 3500rpm

Ritz S14 · 11-19-2004, 08:12 PM

EGR only stays open while you are cruising. From everything that you have said, the probablility of the EGR being the problem, is very slim.

SpdElemts · 11-20-2004, 10:08 AM

Aite yesterday i was crusing on the freeway around 65 and my check engine light comes on for a few minutes and then shuts off. So i come home and check the codes and its code 32. What the hell is going on? Is it my EGR solenoid?

Ritz S14 · 11-20-2004, 10:57 AM

I don't have the manual. What's a code 32

Var · 11-20-2004, 02:33 PM

32 is an EGR related code. First of all your car wasnt tested properly. It was tested in first and second gear rather than second gear, although this would normally help pass a car it could cause some cars to fail but not likely. Your CO2 is high (14.4%) which means the system is efficient as far as air/fuel.

SpdElemts · 11-22-2004, 01:32 AM

Ok I am pretty sure now that my EGR valve, transducer, and solenoid is working properly but my CEL goes on when im cruising around 65mph. I think the problem is my egr temp sensor. I did a diagnostic test couple days ago and it gave code 35, which is the egr temp sensor. I haven’t got that code for a while, but I am getting code 32 all the time. Would the temp sensor cause code 32 to come up?

Thanks

240Stilo · 11-22-2004, 05:29 AM

Give another cat a shot, I just borrowed a cat with 60K miles and just barely passed.

drift freaq · 11-22-2004, 10:46 AM

check your engine timing make sure its in spec due a tune up on the car . clean out your throttle body with carb cleaner it works wonders. I have had cars that were gross polluters that were throwing codes . After I reset timing to stock specs tuned them up i.e. new dist cap.and rotor new spark plugs and possible wires along with cleaning out the throttle body car passed flying colors and the car had almost 200k miles on it. You need to remove the intake tube right in front of your throttle body and open the throttle plate and just spray a can of carb cleaner in there and then fire up your engine and run it . It will burn out all the carbon buildup in the system including your aiv. Your aiv is another thing to check and possibly clean. If they clog they will cause egr system problems. Do all this stuff you should come into spec. especially since your NO was the one that was way off the scales.

SpdElemts · 12-18-2004, 10:13 AM

I went to a the smog shop yesterday and the guy was nice enough to give me a free pre test. I put my friends stock exhaust and cat from his car that passed to put on my car and it did get better but not enough to pass. (15mph=1025 25mph=1045) The guy told me to hold the egr valve all the way open as he ran the car and the NO jumped from 1025 to 400.....i tested the egr valve, transducer, and solinoid instructed in the FSM and all is working. Also as i rev the engine the egr valve moves up and down. Anybody know what else can be the problem?

thx247 · 12-18-2004, 11:04 AM

that stupid vac line coming off the EGR on the bottom of the valve, it makes a 90 degree bend towards the front of the car, it always has a fing hole in it and causes my 240s to fail with high NOX....

have you checked it for holes?

SpdElemts · 12-18-2004, 11:40 AM

Yea i checked that and it looks brand new

SpdElemts · 12-20-2004, 09:43 PM

Does anyone know what my problem is?

thx247 · 04-20-2005, 06:29 PM

any word on this problem? I'm dealing with the same high nox crap...

drift freaq · 04-20-2005, 10:25 PM

well gee, did you read my post and do what I told you too? it does work guys , I have made many s13's pass with high mileage by doing that. Only reason I am asking again is it seems no one has said they tried it they just keep on having a smog tech tell them stuff. I did what I did to a gross polluter and it passed and not only the smog tech at the place next door was amazed but the test only tech was amazed as well due to the fact that car had failed so bad the day before.
Its up to if you have done it and your still having problems then ya check the cat. This is not rocket science people its a very straight forward system.

S-Nation S13 · 03-06-2008, 11:48 AM

ya i have the same problem..ill cruise on the freeway and the cel will come on then after awhile the dam thing will turn off again..the next day it will do it again..i hooked up a nissan consult obd1 ecu scanner egr and o2 came up ...im planning to change out my entire egr system as well as my o2 sensor cause i have high co at low speed and high nox at high speed there are the only two i failed at smog tech told me that the numbers switch at thats what caused me to fail..along with my timing being at 10 tdc rather than 20 tdc...i know fsm allows +/- 2 degrees tdc so imma put it as low as possible to optimize combustion btw my cat is new the white fabric mesh inside the cat..remarkably is hella white any way i can lower co and nox w/o changing entire egr????

11-18-2004, 07:37 PM	#1
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Need help failed smog... Hi guys, I went to get my car smogged and i failed...Here are the results: Mph-15 Rpm-2841 %co2-14.4 %o2-0.8 HC(PPM) max-88 ave-21 meas-42 CO(%) max-0.52 ave-0.06 meas-0.06 NO(PPM) max-704 ave-150 meas-1707 Mph-25 Rpm-2796 %co2-14.3 %o2-0.8 HC(PPM) max-53 ave-13 meas-30 CO(%) max-0.50 ave-0.05 meas-0.03 NO(PPM) max-738 ave-136 meas-1702 Well there are the results. I checked my EGR crap and everything is working. When i rev the engine the EGR doesnt really open but it does move, maybe like 1/4 of an inch. When i push on the plunger the engine does also die. I tested the EGR and Backpressure transducer and it is functioning. I also tested the EGR temp sensor and it is not within specs with the Resistance when cold or hot, can this cause the problem? I also had the check engine light on the other day with diagnostic code 32 but it went away and never came back on after i cleared the codes. Thanks Last edited by SpdElemts; 11-18-2004 at 08:00 PM..

11-20-2004, 02:33 PM	#13
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	32 is an EGR related code. First of all your car wasnt tested properly. It was tested in first and second gear rather than second gear, although this would normally help pass a car it could cause some cars to fail but not likely. Your CO2 is high (14.4%) which means the system is efficient as far as air/fuel. __________________ Hi

11-22-2004, 05:29 AM	#15
240Stilo Junkie Join Date: May 2002 Location: Socal Age: 41 Posts: 1,160 Trader Rating: (0) Feedback Score: 0 reviews	Give another cat a shot, I just borrowed a cat with 60K miles and just barely passed. __________________ -Juan

11-22-2004, 10:46 AM	#16
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	check your engine timing make sure its in spec due a tune up on the car . clean out your throttle body with carb cleaner it works wonders. I have had cars that were gross polluters that were throwing codes . After I reset timing to stock specs tuned them up i.e. new dist cap.and rotor new spark plugs and possible wires along with cleaning out the throttle body car passed flying colors and the car had almost 200k miles on it. You need to remove the intake tube right in front of your throttle body and open the throttle plate and just spray a can of carb cleaner in there and then fire up your engine and run it . It will burn out all the carbon buildup in the system including your aiv. Your aiv is another thing to check and possibly clean. If they clog they will cause egr system problems. Do all this stuff you should come into spec. especially since your NO was the one that was way off the scales. __________________ "Having a lot of tracks on a song is like putting stickers on a car to get more horsepower" New Video https://www.youtube.com/watch?v=uebV1OnbRsw Buy my mounts! http://zilvia.net/f/sale-items/51531...ns-mounts.html http://zilvia.net/f/tech-talk/317539...e-mouts-6.html

12-18-2004, 10:13 AM	#17
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	I went to a the smog shop yesterday and the guy was nice enough to give me a free pre test. I put my friends stock exhaust and cat from his car that passed to put on my car and it did get better but not enough to pass. (15mph=1025 25mph=1045) The guy told me to hold the egr valve all the way open as he ran the car and the NO jumped from 1025 to 400.....i tested the egr valve, transducer, and solinoid instructed in the FSM and all is working. Also as i rev the engine the egr valve moves up and down. Anybody know what else can be the problem? Last edited by SpdElemts; 12-18-2004 at 06:39 PM..

11-18-2004, 07:39 PM	#2
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	If your car has more than 160k miles, I would say check your cat. Where in Nor cal are ayou?

11-18-2004, 07:59 PM	#3
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Your Probably right..my car has 157k on it. I am in the san jose area. BTW what would a faulty egr temp sensor cause?

11-18-2004, 08:09 PM	#5
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	So should i worry about my faulty temp sensor?

11-18-2004, 08:13 PM	#6
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	If you beat on your car often, and neglect maintainence. I would believe that your cat may need to be replaced. If your temp sensor is bad, it'll throw a code.

11-19-2004, 08:05 PM	#7
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Should the egr valve open all the way when i rev the engine to around 3500 rpm? Because it only opens alittle and then closes. The weird thing is that when i test the vacuum from the transducer it gets enough vacuum to open the egr valve fully.

11-19-2004, 08:08 PM	#8
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	WHere in nor cal are you? EGR should not open all the way when you rev. It "shutters". The only way for the egr to stay open is while you're cruising.

11-19-2004, 08:09 PM	#9
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	I am in the san jose area Opps i meant hold the throttle open to around 3500rpm

11-19-2004, 08:12 PM	#10
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	EGR only stays open while you are cruising. From everything that you have said, the probablility of the EGR being the problem, is very slim.

11-20-2004, 10:08 AM	#11
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Aite yesterday i was crusing on the freeway around 65 and my check engine light comes on for a few minutes and then shuts off. So i come home and check the codes and its code 32. What the hell is going on? Is it my EGR solenoid?

11-20-2004, 10:57 AM	#12
Ritz S14 Post Whore! Join Date: Jul 2004 Location: C A L I F O R N I A Age: 43 Posts: 3,586 Trader Rating: (0) Feedback Score: 0 reviews	I don't have the manual. What's a code 32

11-22-2004, 01:32 AM	#14
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Ok I am pretty sure now that my EGR valve, transducer, and solenoid is working properly but my CEL goes on when im cruising around 65mph. I think the problem is my egr temp sensor. I did a diagnostic test couple days ago and it gave code 35, which is the egr temp sensor. I haven’t got that code for a while, but I am getting code 32 all the time. Would the temp sensor cause code 32 to come up? Thanks

12-18-2004, 11:04 AM	#18
thx247 Zilvia FREAK! Join Date: Jan 2003 Location: bay area Posts: 1,455 Trader Rating: (0) Feedback Score: 0 reviews	that stupid vac line coming off the EGR on the bottom of the valve, it makes a 90 degree bend towards the front of the car, it always has a fing hole in it and causes my 240s to fail with high NOX.... have you checked it for holes?

12-18-2004, 11:40 AM	#19
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Yea i checked that and it looks brand new

12-20-2004, 09:43 PM	#20
SpdElemts Zilvia Junkie Join Date: Sep 2004 Location: San Jose, California Age: 36 Posts: 389 Trader Rating: (1) Feedback Score: 1 reviews	Does anyone know what my problem is?

04-20-2005, 06:29 PM	#21
thx247 Zilvia FREAK! Join Date: Jan 2003 Location: bay area Posts: 1,455 Trader Rating: (0) Feedback Score: 0 reviews	any word on this problem? I'm dealing with the same high nox crap... __________________ Finally down to 1 car again. Thank god.

04-20-2005, 10:25 PM	#22
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	well gee, did you read my post and do what I told you too? it does work guys , I have made many s13's pass with high mileage by doing that. Only reason I am asking again is it seems no one has said they tried it they just keep on having a smog tech tell them stuff. I did what I did to a gross polluter and it passed and not only the smog tech at the place next door was amazed but the test only tech was amazed as well due to the fact that car had failed so bad the day before. Its up to if you have done it and your still having problems then ya check the cat. This is not rocket science people its a very straight forward system. __________________ "Having a lot of tracks on a song is like putting stickers on a car to get more horsepower" New Video https://www.youtube.com/watch?v=uebV1OnbRsw Buy my mounts! http://zilvia.net/f/sale-items/51531...ns-mounts.html http://zilvia.net/f/tech-talk/317539...e-mouts-6.html

03-06-2008, 11:48 AM	#23
S-Nation S13 Post Whore! Join Date: Jan 2008 Location: LAND of the LOST Posts: 4,083 Trader Rating: (92) Feedback Score: 92 reviews	ya i have the same problem..ill cruise on the freeway and the cel will come on then after awhile the dam thing will turn off again..the next day it will do it again..i hooked up a nissan consult obd1 ecu scanner egr and o2 came up ...im planning to change out my entire egr system as well as my o2 sensor cause i have high co at low speed and high nox at high speed there are the only two i failed at smog tech told me that the numbers switch at thats what caused me to fail..along with my timing being at 10 tdc rather than 20 tdc...i know fsm allows +/- 2 degrees tdc so imma put it as low as possible to optimize combustion btw my cat is new the white fabric mesh inside the cat..remarkably is hella white any way i can lower co and nox w/o changing entire egr????