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BMW 3-Series (E90 E92) Forum
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Need help to pass emissions in Colorado
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08-04-2016, 03:51 PM | #1 |
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Need help to pass emissions in Colorado
Hello, as my title stated, I need some help passing emissions in CO with my e92 335i. I have a cat deficiency code that will hinder me from passing emissions to get stickers. I have trouble installing the DP fix as every time, it gives me a Thermostat fault.
I really do not want to go with a new OEM exhaust system as I plan on modifying it anyways. My last shop could not find anything wrong in terms of 02 sensor or a leak. If anyone or any shop can help me do this within a very reasonable budget or bypass the ECU fault or avoiding the need to go through a dealership, I would love to work with you. thanks a bunch! P.S. Would love to get this done before August ends, ASAP |
08-05-2016, 01:49 AM | #3 | |
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The other solution was to install the DP fix and do a drive cycle. Upon Installation, my car was reading p0598 which is thermostat error or something in that area. Also, when I installed the DP fix (do not have JB4, straight to the ECU) there was no cable 23 that needed to remove to plug in my last male connector on my DP fix. I really am stuck as this car is my daily and I cannot figure out how to fix this without spending close to 3 grand for a new exhaust system just to pass emissions. |
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08-05-2016, 11:56 AM | #4 |
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PM MilehighM3. He works for BMW in Colorado Springs and is very knowledgeable on these cars.
I assume you are failing since they are seeing you have a check engine light which is an automatic fail. |
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08-06-2016, 03:58 AM | #5 |
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Seems like something is wrong with a sensor or electronically, not with the exhaust. Can you pull any codes from it? And usually the dp fix is for people with cat less dps, if you have stock it should run normal.
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08-06-2016, 11:40 PM | #6 |
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Yes, Autozone OBD device pulled up the code p0420/430. Catalytic Converter deficiency bank 1 and bank 2. My shop pulled up the same description, although I don't know what the specific code it would read on a BMW specific OBD device.
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08-08-2016, 04:20 PM | #8 |
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It could be bad 02 sensor unless previous owner gutted the cats or the cats have a hole in them. You can also try to space them out using a spark plug fouler. That sometimes tricks them into thinking its burning cleaner.
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08-08-2016, 10:56 PM | #10 | |
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Drives: Harrop E90 M3
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Location: Colorado Springs
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08-09-2016, 03:27 PM | #11 |
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08-09-2016, 03:28 PM | #12 |
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It very well could but my shop said all the o2 sensor was reading fine the last time I got a diagnostic for the codes. I don't know what else could cause it. I bought my car from CarMax so I believe they should've caught any fault unless they're half ass garage mechanics haha
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08-09-2016, 09:50 PM | #13 | |
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08-19-2016, 06:29 PM | #16 | |
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Anyways, I contacted MileHighM3 & he got me down to Winslow where his team was very nice & they are carrying out Emissions warranty for my car without any hassle whatsoever. It was indeed a bad cat. |
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08-20-2016, 02:34 PM | #17 | |
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08-20-2016, 07:25 PM | #18 |
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08-20-2016, 09:14 PM | #19 |
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The cats on the downpipes are the only ones monitored for emissions on your car. So you'll have 2 new ones whenever you're available to have them installed.
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08-20-2016, 11:42 PM | #20 |
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09-19-2016, 11:30 PM | #21 | |
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I do not believe that this statement is true. The check engine light has been on in my '92 F250 for about 6 years now. I pass emissions in Denver Metro area every time. Do you have a source to back up the above statement? thanks. |
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09-24-2016, 04:40 PM | #22 |
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I believe car at 1992 is subject to the sniff test? I'm not sure, but it could just be an electronic error for your CEL and the car itself is running fine to pass emissions. I don't get how the whole process works, but for cars newer they are subject to the OBDII testing, and if they have the CEL or emissions related code, then you won't be able to pass.
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335i, e92, emissions, turbo |
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