# emmision problem.
**URL:** https://forums.speedlife.net/t/emmision-problem/103391
**Category:** SON240sx Automotive
**Created:** [January 29, 2007, 1:55pm UTC](https://forums.speedlife.net/t/emmision-problem/103391 "2007-01-29T13:55:18Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Arruda](https://forums.speedlife.net/u/Arruda)
#### Post date: [January 29, 2007, 1:55pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/1 "2007-01-29T13:55:18Z")
My car will not pass emmisions! it is soo close to…off by a few numbers…I have done everything the mechanics are telling me to do, and then some…I changed the oil, put in new O’sensers, brand new catback…in total cost me a preety penny…Now the guy tells me to come back tomorow and he said that he will adjust the “EGRsensor” and there will be more airflow apperently! and it will pass…I dont know what do. What would you guys in this situation?
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### Author:  [@snowboard\_240sx](https://forums.speedlife.net/u/snowboard_240sx)
#### Post date: [January 29, 2007, 2:22pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/2 "2007-01-29T14:22:20Z")
so u replaced ur cat back?
what about ur catalytic convertor?
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### Author:  [@zackr\_downbeat](https://forums.speedlife.net/u/zackr_downbeat)
#### Post date: [January 29, 2007, 2:29pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/3 "2007-01-29T14:29:45Z")
2 words
dyno tune
its costy but totaly worth it. i had a 1948 Chevy…Camaro 350, magnaflow mufflers…NO CAT
had it dyno tuned…never needed a cat converter. passed with good numbers. even tho you dont need emissions for cars that old i had it checked anyways.
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### Author:  [@simplemind7](https://forums.speedlife.net/u/simplemind7)
#### Post date: [January 29, 2007, 4:09pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/4 "2007-01-29T16:09:10Z")
so uh… it would probably help if you tell us which part of the emissions test you’re failing.
it can probably be fixed with timing.
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### Author:  [@renegade141](https://forums.speedlife.net/u/renegade141)
#### Post date: [January 29, 2007, 5:06pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/5 "2007-01-29T17:06:14Z")
did you make sure your car is warmed up hot?
it is winter, so your car could have cooled below normal op. temp.
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### Author:  [@matty](https://forums.speedlife.net/u/matty)
#### Post date: [January 29, 2007, 5:20pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/6 "2007-01-29T17:20:41Z")
zack, why did u have to e-test a 1948 car?
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### Author:  [@Arruda](https://forums.speedlife.net/u/Arruda)
#### Post date: [January 29, 2007, 7:43pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/7 "2007-01-29T19:43:15Z")
sorry guys, yes I did replace the Catalytic converter. I left the sheets in my car, its really cold outside right now but I will let you know tomorow…I am getting the EGR sensor tuned and then testing it again hopefully it will work.
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### Author:  [@simplemind7](https://forums.speedlife.net/u/simplemind7)
#### Post date: [January 29, 2007, 11:17pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/8 "2007-01-29T23:17:50Z")
i doubt that will help, my '90 passed a legit e-test fine with DOHC motor, a bad O2 sensor (i was told) and the EGR removed.
there are a lot of tricks to get it to pass, for me i had to retard the timing to the point that it barely ran. if i ran normal timing i would fail really badly for NOx.
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### Author:  [@Zeta\_G](https://forums.speedlife.net/u/Zeta_G)
#### Post date: [January 31, 2007, 9:40pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/9 "2007-01-31T21:40:41Z")
wat and how much are u off by???
if it ain’t off by too much
pump some nicer fuel and give it a gd run on the highway
then try again…
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### Author:  [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)
#### Post date: [January 31, 2007, 10:00pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/10 "2007-01-31T22:00:36Z")
get some of that “sure pass” or something they sell at auto parts store, apparently it works pretty good.
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### Author:  [@simplemind7](https://forums.speedlife.net/u/simplemind7)
#### Post date: [February 1, 2007, 6:48pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/11 "2007-02-01T18:48:52Z")
> [@The new daily, pics!](https://forums.speedlife.net/t/the-new-daily-pics/11212/6):
>
> get some of that “sure pass” or something they sell at auto parts store, apparently it works pretty good.
no it doesn’t.
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### Author:  [@Arruda](https://forums.speedlife.net/u/Arruda)
#### Post date: [February 7, 2007, 2:56pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/12 "2007-02-07T14:56:23Z")
> [@4-9-06 Como Park Badazz Cruise Video](https://forums.speedlife.net/t/4-9-06-como-park-badazz-cruise-video/10647/84):
>
> no it doesn’t.
yea I just did that today, did nothing…so apperently its my vacume. My mechanic owns a clean 93 fastback LE so we are going to transfer the parts from his car to mine then run the etest later.
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### Author:  [@simplemind7](https://forums.speedlife.net/u/simplemind7)
#### Post date: [February 7, 2007, 9:13pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/13 "2007-02-07T21:13:25Z")
post the results of your e-test, it would really help with solving the problem. failing in different areas require different fixes.
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### Author:  [@shift\_fun](https://forums.speedlife.net/u/shift_fun)
#### Post date: [February 7, 2007, 10:36pm UTC](https://forums.speedlife.net/t/emmision-problem/103391/14 "2007-02-07T22:36:57Z")
wow , u got a new cat / o2 sensor and still failed… if its not ur Maf then there is something seriously wrong with ur engine.
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### Author:  [@lovemys14](https://forums.speedlife.net/u/lovemys14)
#### Post date: [February 8, 2007, 8:12am UTC](https://forums.speedlife.net/t/emmision-problem/103391/15 "2007-02-08T08:12:01Z")
put it in 2nd and rip the shit out of it
then go for your test…
when i had my altima he told me to go around the block and drive it hard then come back, ur engine’s gotta be really hot…hope it helps
good luck