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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 06-26-2009, 05:35 AM   #81
richyboycaldo
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How can I tell aparte the post and pre cat sensor. I was looking at this thread and I cant tell the difference. I always thought that these were the post cat sensors.

http://forum.e46fanatics.com/showthr...=02+sensor+diy
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Old 06-26-2009, 05:40 AM   #82
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never mind I manage to find a nice DIY that shows me were the post cat sensor are.
http://forum.e46fanatics.com/showthread.php?t=293116
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Old 06-28-2009, 12:13 AM   #83
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Just went to the site and bought one of these How long does the shipping usually take?
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Old 06-28-2009, 04:48 AM   #84
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I got mine exactly seven business days.
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Old 06-30-2009, 10:52 PM   #85
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So this would allow us to pass inspection since sniffers aren't required for OBD2? (NY anyway)
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Old 07-07-2009, 02:39 PM   #86
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I have received my O2 simulator and have gone a slightly different route than what this thread suggests. I cut the wires on the O2 sensor harness itself as opposed to hacking in to the main wiring harness of the car. I also decided to relocate my O2 sensors to the "drug bin" encased in an electrical box I bought from Lowe's. I'll post pictures and an easy to follow wiring diagram. I found this thread a bit confusing and did a little more research on other forums and I'll post the info I found most useful along with pics of my setup when it is complete. Might be a few days since I'm trying to get the electrical box powdercoated so it won't look like a lump of galvanized steel in my engine bay More to come soon!
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Old 07-21-2009, 10:45 PM   #87
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^^pics of your setup ready?
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Old 07-22-2009, 12:42 AM   #88
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Originally Posted by wrecklessfool View Post
I have received my O2 simulator and have gone a slightly different route than what this thread suggests. I cut the wires on the O2 sensor harness itself as opposed to hacking in to the main wiring harness of the car. I also decided to relocate my O2 sensors to the "drug bin" encased in an electrical box I bought from Lowe's. I'll post pictures and an easy to follow wiring diagram. I found this thread a bit confusing and did a little more research on other forums and I'll post the info I found most useful along with pics of my setup when it is complete. Might be a few days since I'm trying to get the electrical box powdercoated so it won't look like a lump of galvanized steel in my engine bay More to come soon!
Pixors please & details.
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Old 09-10-2009, 09:30 AM   #89
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Okay, I need someone who's installed these to clear this up for me. Here's what I did.

1. Red sim wire to 12v power, check

2. Black sim wire to grey ground, check

3. This is where, I got confused. There are 2 black wires going to each O2 sensor. Do I just cut and intercept one from each sensor? Do I cut both and intercept one from each? Sorry, this wasn't clear to me. I cut and intercepted one black wire from each sensor, but I'm not sure if that'll do it.

Let me know!
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Old 09-10-2009, 11:53 AM   #90
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Nevermind. I'm retarded and colorblind. I installed it right.
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Old 09-10-2009, 07:46 PM   #91
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I'm going to be doing this soon.... @#$% defoulers... lol
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Old 09-11-2009, 10:36 AM   #92
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For those of you who have installed this... if you put it in AFTER your SES light was already on, how long did it take for it to go off? I have 110 miles on the car since I installed it yesterday. Autozone won't clear codes anymore, and I can't get to a shop to do it any time soon.
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Old 09-11-2009, 11:09 AM   #93
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For those of you who have installed this... if you put it in AFTER your SES light was already on, how long did it take for it to go off? I have 110 miles on the car since I installed it yesterday. Autozone won't clear codes anymore, and I can't get to a shop to do it any time soon.
I don't think it will go away. I tripped a code in between header install and cat/defouler install and it never went away until I cleared it.
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Old 09-11-2009, 11:10 AM   #94
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For those of you who have installed this... if you put it in AFTER your SES light was already on, how long did it take for it to go off? I have 110 miles on the car since I installed it yesterday. Autozone won't clear codes anymore, and I can't get to a shop to do it any time soon.
I'm guessing you aren't close to Va, are you?
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Old 09-11-2009, 11:13 AM   #95
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Haha, no.

I guess I'll just have to make my way out to Stett.
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Old 10-02-2009, 02:42 PM   #96
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Hello, my mechanic installed the 02 sim, along with some VANOS seals and other stuff. After I got my car back. my reader now shows code P0135, that says

(Oxygen sensor heater pre-cat (Bank1))
Output digital pulse width (active low)

and this is the explanation for the code:

"DME final stage will set flagwhenever a short to ground, a shortto battery voltage or a disconnection between output transistor and component exists

So is this something related tothe 02 sim, or is something completely different. maybe the wiring was done incorrect. The sim is blinking green so I that means it ok.
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Old 10-02-2009, 02:50 PM   #97
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Responded to your thread.
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Old 10-04-2009, 02:07 PM   #98
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pretty sick.
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Old 10-16-2009, 10:05 PM   #99
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I just installed my O2sim today. Spliced into the wiring right before it went into the plug to the DME. Really simple install. I cleared the codes and no CEL after running at idle for five minutes and a drive around the block. I'm going to try and get a smog check done Monday morning. I'll let you guys know what happens.
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Old 10-17-2009, 11:21 AM   #100
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^^ Keep us posted. I'm doing mine after I the new clutch/flywheel are on.
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