ok...i posted a couple days ago bout the service engine soon light...well i drove around for a while over like 3 days and it didnt go away, so i reset the ECU by unplugging negative pole overnight....and it went away for most of the day, but as i was coming home today, it came back on...now what do i do? dealership? i really dont wanna take it there cuz i think theyre gonna spit bs about intake/muffler stuff...but i guess i have to...intake/muffler have any effect on o2 sensers?
atw

 

Yup.

 

ok...ive had the muffer (NO Y-PIPE) for about 10k miles...and now it decides to tell me theres something wrong? and frankencar intake has been in for ~500 miles...thats wack...what do i do?
atw

 

Nope. A muffler and intake should not affect your O2 sensors. I'd suspect your problem lies elsewhere.

 

could be the catylic converter

 

I am not doubting you or anything, but who did your intake install. There are a number of sensors that could be disconnected or have a loose connection. My suggestion before taking it to the dealer is to check the sensors directly related to the install, namely temp, MAF, etc. BTW, I don't think you will have a problem with the dealer taking a look at it. You just might have to take some S#$T!

 

the intake install was done at the All-Nissan by WizzaMax {Tracy} and Chinkzilla {Dennis}, w/ a lil bit of input from Bernie2000se {Bernie}...i just dont understand how everything was coo until now, and then just all of a sudden decides to tell me sumthing is wrong...ive checked all the connections and they seem to be correct...
atw

 

How is the car idling and running, OK? Even after the check light comes on?

Gas cap on tight?

Is there any place you could go to that can pull the trouble codes besides the dealer? At least you'd find out what was tripping the light without alerting the dealer to your mods.

 

the car is fine...running beautifully and idling well...gas cap checked many times....and i dunno where else i could go beside dealer
atw

 

Well my 2k2 was the same way.
I drove it around for a while after reseting the ecu and the engine light came on again.
I took it to the dealer and the first bank o2 sensor was burnt out.
It must have been the recent snow and rain and all that other crazy weather we just had in texas.
They replaced it in like 2 hours for me.
Good luck.

 

ok so i guess dealer it is....how much trouble will they give me for intake/muffler?
atw

 

can sumbody help me out w/ that?...also, my gas mileage is incredible...since i got the frankencar intake installed, i used costco gas...but since prices are going up, i had to use arco once, and i used mobile this time...im getting about 35-40 more miles then i usually get...would that have anything to do w/ my light being on? also, im not damaging anything by driving on a bad o2 senser, if thats what it is am i? cuz i dont have time to take it in rite now
atw

 

I don't know about the 2K2, but I took my 2K in with intake FSTB and they did warranty work on my car no problem, including some TSB's for rotors, ecu reset, etc. They just made a note of the aftermarket parts in the file.

 

You shoulnd't do any damage, you just wouldn't know it if there really was something wrong with your car, because that is the purpose of the o2 sensor, it makes you aware if your engine is not 'breathing properly' by (snicker) turning your check engine light on. If it is already on, you wouldn't know there was a real problem until you got your o2 sensor fixed. Under warranty a dealer should replace o2 sensor for free, but might give you a lil' shizznit for your mods. Any smart garage mechanic could tell you for sure if that is your problem without charging you, hell take it in for an oil change to a real mechanic and say, 'by the way...'

 

If I'm not mistaken, o2 sensor is used by ECU to detrmine how reach is the air/fuel mixture is. ECU actually slightly changes this ratio all the time causing alternative part of o2 sensor output signal and then measures it. It essentually makes o2 sensor important part of "electronic carburetor" on injector cars. When my o2 sensor went bad recently (I'm stock, except FSTB, brake pads and tires) - my milege decreased on about 30%. It was also "second bank sensor", I pulled codes myself - any OBD scan tool can do that. We're building one ourselves so it was great opportunity for some field-test .

Mike.

 

I didn't do it!

 

haha, its all good Dennis...hey thanks for the 411 guys...but thats weird, my gas mileage went up...hmm..or maybe its the mobile gas...dunno...ill take it in on thursday after school, hopefully they wont jack my *** cuz of mods...
atw

 

just two more questions guys...im taking my car to dealer 2morrow so, i wanna know, as long as intake was installed properly, which it was, is there anyway nissan/dealership could prove that the intake caused whatever the problem is? and how long does it take to get fixed, i read 2 hours below, but any other experiences? i need my car friday so i just want to get it back same day
thanks
atw

 

...Don't let 'em push you around...