help please. car didn't pass smog - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

silvia_s14 · 12-17-2010, 08:26 PM

Thanks for all your guyzez help . i looked at the exhaust had a couple leaks, borrowed my brothers cat, fixed a couple egr hoses that were ripped n craked n passed smog. smog guy fixed my timing n now im getting a lot of clutch slipping. what's next. thanks again .
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my car is a 95 240sx passed everything except a NO(PBM) TEST

15MPH: MAX- 493, AVE-170, MEAS 1639<--- FAIL
25MPH: MAX- 516, AVE-158, MEAS-0657<--- FAIL

the guy at the smog place said it could be a exhaust leak or something to do with my EGR system.
before the test i put everything stock back on and made sure they were tight. he tested my EGR valve n said thats funny it should hold pressure mine isn't. it builds pressure for a couple seconds n drops to nothing. i'm not sure what to do.

Thought i should add this too. my check engine light is on after i just completed my auto->5speed swap. i used my stock auto harness n wired all the transmission connections up. the wires for the auto transmission are still hanging there cut n taped up not sure what to do with them. uummm, i'm using a 5speed ecu. I DID DRILL THE HOLE FOR THE CRANK ANGLE SENSOR PRETTY CLOSE TO WHERE IT WAS ON MY BROS 95 5SPEED 240. please help me my tags expire the 18th

thanks zilvians

silvia_s14 · 12-18-2010, 11:40 AM

Anyone? "/

fckillerbee · 12-18-2010, 12:51 PM

Quote:

Originally Posted by silvia_s14

my car is a 95 240sx passed everything except a NO(PBM) TEST

15MPH: MAX- 493, AVE-170, MEAS 1639<--- FAIL
25MPH: MAX- 516, AVE-158, MEAS-0657<--- FAIL

the guy at the smog place said it could be a exhaust leak or something to do with my EGR system.
before the test i put everything stock back on and made sure they were tight. he tested my EGR valve n said thats funny it should hold pressure mine isn't. it builds pressure for a couple seconds n drops to nothing. i'm not sure what to do.

Thought i should add this too. my check engine light is on after i just completed my auto->5speed swap. i used my stock auto harness n wired all the transmission connections up. the wires for the auto transmission are still hanging there cut n taped up not sure what to do with them. uummm, i'm using a 5speed ecu. I DID DRILL THE HOLE FOR THE CRANK ANGLE SENSOR PRETTY CLOSE TO WHERE IT WAS ON MY BROS 95 5SPEED 240. please help me my tags expire the 18th

thanks zilvians

pay the reg...you have six months to smog it.

silvia_s14 · 12-18-2010, 02:09 PM

I did already. I took the whole exhaust n headers off again put back on tight. But don't know anything bout y the egr n y its not holding pressure

singlecamslam · 12-18-2010, 02:18 PM

not 6, you have 2 months. check your vacuum hoses to your egr. Check your check engine code and see what it is. Go from there.

silvia_s14 · 12-18-2010, 09:22 PM

Quote:

Originally Posted by singlecamslam

not 6, you have 2 months. check your vacuum hoses to your egr. Check your check engine code and see what it is. Go from there.

How do I check the code. Did a little research but can't find a a for sure answer

redline racer510 · 12-18-2010, 09:38 PM

First step to figuring this out is to buy an fsm it will give you more specific instructions on how to pinpoint the problem if you are still having trouble we can go down the list of things to try. I really doubt it has anything to do with the 5-spd swap unless you hacked up your wiring or did something really careless.

singlecamslam · 12-18-2010, 10:40 PM

Take the ecu, turn the ignition on, and turn the screw on the ecu clockwise for 2 seconds, and counterclockwise for 2 seconds, count the flashes.

idlafie · 12-18-2010, 11:31 PM

Read my previous posts.....

http://zilvia.net/f/tech-talk/336517...pass-smog.html

ID

lexlaxlux · 12-19-2010, 01:18 AM

*For educational/instructional purposes only... not intended for use*

Change your spark plugs, fix all vacuum leaks, and pour some denatured alcohol in your tank on empty (1/4 tank). Reset the ECU, no CEL or code show throw for 50 miles.

singlecamslam · 12-19-2010, 10:24 AM

your car is obd1 you can get away with check engine codes, just reset the ecu and make sure it stays off long enough for the test.

silvia_s14 · 12-19-2010, 01:42 PM

Quote:

Originally Posted by singlecamslam

your car is obd1 you can get away with check engine codes, just reset the ecu and make sure it stays off long enough for the test.

Yea the smog guy let me go on the light cause I got it to go offfor atleast a minute lol. But everyone thanks for the info. I just got home I've been checkinng this thru my phone. I'm going to start checking things out. Keep them comming. I appreciate it alot. I like that denatured alcohol option might try that too.

12-17-2010, 08:26 PM	#1
silvia_s14 Zilvia Member Join Date: Mar 2006 Location: fresno,ca Posts: 259 Trader Rating: (3) Feedback Score: 3 reviews	help please. car didn't pass smogupdated Thanks for all your guyzez help . i looked at the exhaust had a couple leaks, borrowed my brothers cat, fixed a couple egr hoses that were ripped n craked n passed smog. smog guy fixed my timing n now im getting a lot of clutch slipping. what's next. thanks again . -------------------------------------------------------------------------- my car is a 95 240sx passed everything except a NO(PBM) TEST 15MPH: MAX- 493, AVE-170, MEAS 1639<--- FAIL 25MPH: MAX- 516, AVE-158, MEAS-0657<--- FAIL the guy at the smog place said it could be a exhaust leak or something to do with my EGR system. before the test i put everything stock back on and made sure they were tight. he tested my EGR valve n said thats funny it should hold pressure mine isn't. it builds pressure for a couple seconds n drops to nothing. i'm not sure what to do. Thought i should add this too. my check engine light is on after i just completed my auto->5speed swap. i used my stock auto harness n wired all the transmission connections up. the wires for the auto transmission are still hanging there cut n taped up not sure what to do with them. uummm, i'm using a 5speed ecu. I DID DRILL THE HOLE FOR THE CRANK ANGLE SENSOR PRETTY CLOSE TO WHERE IT WAS ON MY BROS 95 5SPEED 240. please help me my tags expire the 18th thanks zilvians Last edited by silvia_s14; 12-22-2010 at 11:56 AM..

12-18-2010, 02:18 PM	#5
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,534 Trader Rating: (10) Feedback Score: 10 reviews	not 6, you have 2 months. check your vacuum hoses to your egr. Check your check engine code and see what it is. Go from there. __________________ Nothing says racecar like a stock car with no interior.

12-18-2010, 10:40 PM	#8
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,534 Trader Rating: (10) Feedback Score: 10 reviews	Take the ecu, turn the ignition on, and turn the screw on the ecu clockwise for 2 seconds, and counterclockwise for 2 seconds, count the flashes. __________________ Nothing says racecar like a stock car with no interior.

12-18-2010, 11:31 PM	#9
idlafie Zilvia Addict Join Date: Mar 2004 Location: ..So Cal.... Posts: 940 Trader Rating: (0) Feedback Score: 0 reviews	Read my previous posts..... http://zilvia.net/f/tech-talk/336517...pass-smog.html ID __________________ Weekend Mechanic for my Not-So-Mechanically-Inclined buddies....

12-19-2010, 10:24 AM	#11
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,534 Trader Rating: (10) Feedback Score: 10 reviews	your car is obd1 you can get away with check engine codes, just reset the ecu and make sure it stays off long enough for the test. __________________ Nothing says racecar like a stock car with no interior.

12-18-2010, 11:40 AM	#2
silvia_s14 Zilvia Member Join Date: Mar 2006 Location: fresno,ca Posts: 259 Trader Rating: (3) Feedback Score: 3 reviews	Anyone? "/

12-18-2010, 02:09 PM	#4
silvia_s14 Zilvia Member Join Date: Mar 2006 Location: fresno,ca Posts: 259 Trader Rating: (3) Feedback Score: 3 reviews	I did already. I took the whole exhaust n headers off again put back on tight. But don't know anything bout y the egr n y its not holding pressure

12-18-2010, 09:38 PM	#7
redline racer510 Zilvia FREAK! Join Date: Dec 2007 Location: EARFF(earth for you idiots) Posts: 1,072 Trader Rating: (1) Feedback Score: 1 reviews	First step to figuring this out is to buy an fsm it will give you more specific instructions on how to pinpoint the problem if you are still having trouble we can go down the list of things to try. I really doubt it has anything to do with the 5-spd swap unless you hacked up your wiring or did something really careless.

12-19-2010, 01:18 AM	#10
lexlaxlux Zilvia Junkie Join Date: Mar 2010 Location: Socal Posts: 467 Trader Rating: (32) Feedback Score: 32 reviews	For educational/instructional purposes only... not intended for use Change your spark plugs, fix all vacuum leaks, and pour some denatured alcohol in your tank on empty (1/4 tank). Reset the ECU, no CEL or code show throw for 50 miles.