I got my obx header and a 2.5 inch stainless steel pipe to a flo pro muffle with a chrome magnaflow tip put on today
When removing my old converter I notice there was NOTHING IN IT! why didn't the sensor throw a code for that I'm wondering?
Now I'm throwing codes p013, p113 and p404
I think those are the codes I could be wrong but it's basiclly my o2 sensor stuff and egr
exhaust gas return insufficent was one.
It's just a header and 2.5 SS pipe I didn't think it would throw the ecm off that much
I had the same problem, I had OBX headers at one point. After the instal, a month later I got codes for bank 2 (oxygen sensor), later bank 1. It seems whom ever created the header design, did not realize that there needs to be a hot flow passing the all the 02 sensors. The header can only measure heat/AF mixture from two pistons for bank one, compared to OEM where it measures all four toward the collective pipe. That can be a problem, and thus will send you a code. Unless you can plug the OBX bank 1 thread, and weld a new one way under the oil pan (where the header collects all four readings), this would mean you would have elongate the electric harness. The second problem can be your catylic converter feed and exit tubes, they might be too large to sustain heat/AF mixture for bong 2 to read. If this is so, as an example if you have a 2.5 pipe, reduce it to 2.25 and try welding the thread as close to the catylic as possible and deep as possible (so the O2 sensor it can be in the line of the exhaust stream). I'm sure but there Rk sport I think sells O2 sensor byass modules (for those with 3inch full exhaust.) I got pissed off when I had to change sensors and catylic converters all the time, so I simply ported the OEM exhaust and downpiped 2.25 all the way through, no problems yet. Hope that helped.
Ya I suppose that could be it. Damn it that was alot of work. whats going to happen if I keep driving with light on?
Can I use a heated 02 sensor in the header and get rid of the light?
We need to know the correct codes. ECU codes are 4 numbers (example
0114).
FU Tuning
^^lol MY ODBII scanner doesnt make faces! where can i get one?!?
its P0114 the example, just to clarify. But i still want a face-making scanner....
heh
Matt Linke wrote:^^lol MY ODBII scanner doesnt make faces! where can i get one?!?
its P0114 the example, just to clarify. But i still want a face-making scanner....
heh
Yeah should of been P0114 as the example. Sorry.
FU Tuning
Mine started throwing p0420 last nite
Looks like Ill have to get the new exhaust sooner than I thought...
Actually, it wasnt doing it for the year that I had the exhaust, I think I just messed up the 02 sensor when I swapped the exhaust over.
Matt Linke wrote:Mine started throwing p0420 last nite
Looks like Ill have to get the new exhaust sooner than I thought...
Actually, it wasnt doing it for the year that I had the exhaust, I think I just messed up the 02 sensor when I swapped the exhaust over.
Do you have a cat, or high flow cat? If not you might be able to just do a manual O2 sim and be good to go.
FU Tuning
Well ....I won't be able to get the codes till Monday. I remeber one was exhaust gas return insuffciant. Like the post above says the o2 sensor on the obx is in the path of only 2 cylinders not 4 like the stock manifold that is why it's throwing codes I'm guessing.
Whats weird is when I took my old converter off there was nothing in it, it was hollow. Why wouldn't I get a code for that?
One of the other codes was something to do with the IAT which I have no idea why because I didn't touch that at all
I really don't want to tear that obx manifold off and put a new on.
The exhaust Is LOUD and really powerful. I might have to get a blow off valve or resinator tube. for the snap crackle pops inbetween gears and letting off the throttle
can you get a stand alone ecm and over-ride the stock ecm?
Quote:
Like the post above says the o2 sensor on the obx is in the path of only 2 cylinders not 4 like the stock manifold that is why it's throwing codes I'm guessing.
Honestly that has nothing to do with it. Most people with 2.4's and a header (and even some with stock manifolds) have this issue. With having a header the exhaust flows very well. This does not heat the O2 sensor fast enough. Causing issues.
FU Tuning
"Whats weird is when I took my old converter off there was nothing in it, it was hollow. Why wouldn't I get a code for that?"
Converters convert poluted emissions to good emissions (they have plaltinum in their filter which create carbon molecule reactions)
The second sensor again, measures the heat after the converter, as to make sure it's not clogged and flow is traveling nicely.
Quote:
Do you have a cat, or high flow cat? If not you might be able to just do a manual O2 sim and be good to go.
Id rather not get an o2 sim, somehow I just wanna have the sensor.. Part of me is like, it worked before, it should work again.
I think its because the exhaust has some leaks, which ill fix now that I have the motor mounts installed.
Plus the exhauast is raspy now in the upper RPMs, So im going to upgrade anyways, and it should be fine with some new piping, no leaks, and a new muffler.
Matt Linke wrote:Quote:
Do you have a cat, or high flow cat? If not you might be able to just do a manual O2 sim and be good to go.
Id rather not get an o2 sim, somehow I just wanna have the sensor.. Part of me is like, it worked before, it should work again.
I think its because the exhaust has some leaks, which ill fix now that I have the motor mounts installed.
Plus the exhauast is raspy now in the upper RPMs, So im going to upgrade anyways, and it should be fine with some new piping, no leaks, and a new muffler.
Well if you researched what a manual O2 sim is then you would know you still have the factory O2 sensor. If you take out the cat you are going to have rasp in the higher RPM's. It is a 4 cylinder what do you expect.
FU Tuning
Quote:
"Whats weird is when I took my old converter off there was nothing in it, it was hollow. Why wouldn't I get a code for that?"
Converters convert poluted emissions to good emissions (they have plaltinum in their filter which create carbon molecule reactions)
The second sensor again, measures the heat after the converter, as to make sure it's not clogged and flow is traveling nicely.
Yes I know but there was no filter in it, it was hollow.
Could it have been a resonator? or somebody messed with your exhaust at some point of ownership. Either way exhuast past through the sensor, but youy stil polluted the environment.
OK, The codes are........p0401.....p1133
it's throwing each of those codes twice
Jacob Smith wrote:OK, The codes are........p0401.....p1133
it's throwing each of those codes twice
p0401-EGR insufficient flow detected
p1133 Upstream heated O2 sensor circuit high voltage (Bank 1 sensor 1)
What year is your car?? That second code is weird.
FU Tuning
so what you think that second one is all about then?
Well I guess the codes would explain why my rpms go down and my car stalls out sometimes now, egr valve must be blocked or something,
Sounds like you need a new O2 sensor. I would pull the EGR off and check everything, but it might be bad as well.
FU Tuning
