Topic: How do you know when a wideband o2 sensor is bad? (Read 44622 times)

jdmhatchracer94 · « **on:** March 07, 2009, 07:42:15 PM »

I dunno bought a used plx m300. put the thing in the way i got it. it reads air when costing. lean at around 75% throttle in any gear I have a completely stock ecu on an almost stock motor. damn thing reade in 11s and 12s at idle some times. I figure it's shot but for any new people that come here figure it would help if anyone could tell me wtf

snm95ls · « **Reply #1 on:** March 07, 2009, 07:46:22 PM »

Sounds like it is bad or your setup has issues.

It should be lean when coasting if you are not opening the throttle at all, because of fuel cut.

Most stock maps are actually pretty rich, like mid 12's to higher 11's fom what I have seen.

If the engine is indeed idling at 11 to 12 at times, you should definitely be able to hear a difference and smell the raw fuel.

ratcityrex · « **Reply #2 on:** March 07, 2009, 07:47:14 PM »

Souds like you have a bad o2, but how are you powering it? Cig lighter, or straight from the battery? I know they say for the most precise you are supose to use the same ground as the ecu

jdmhatchracer94 · « **Reply #3 on:** March 07, 2009, 08:03:35 PM »

power out the fuse box and ground right above it. I have read a few people did it this way with no issues but yet again I always have issues

ratcityrex · « **Reply #4 on:** March 07, 2009, 08:06:56 PM »

probably just a bad o2. I think they are like 60 at the auto parts store. I set my plx up in my my clock

jdmhatchracer94 · « **Reply #5 on:** March 07, 2009, 08:54:13 PM »

your links = fail ha ha

bryantaylor · « **Reply #6 on:** March 07, 2009, 08:55:57 PM »

is there a way to test the sensor. i have had the same sensor in my AEM for like 3 years, still reads, but is it still accurate?

jdmhatchracer94 · « **Reply #7 on:** March 07, 2009, 08:59:08 PM »

thats what I wanna know and no after three years it probably isn't I've read to change them about every 6 months

widebody93 · « **Reply #8 on:** March 07, 2009, 09:01:19 PM »

Buy a new sensor from autozone for like 50 bucks

You run alot of racegas or is it really close to the turbine? Limits it life

ratcityrex · « **Reply #9 on:** March 07, 2009, 09:01:46 PM »

links work now

I was switching my photosuckit account around....

snm95ls · « **Reply #10 on:** March 07, 2009, 10:39:30 PM »

This is why I love the Innovate setups. None of the other controllers I have seen have any diagnostic routines built in.

I have been using the same sensor for a couple of years to tune cars. I ran one in my GSR for several months as well. Pretty sure I am going to either have my other LC-1 fixed, it has seen better days lol, or pick up another to run in the daily.

If you are unsure about the condition of the sensor, you can always pick one up for a reasonable price.

bryantaylor · « **Reply #11 on:** March 07, 2009, 11:32:29 PM »

well shit. i prob should get a new one just to tune with, and keep the old one in for when i am just driving around.

DmC · « **Reply #12 on:** March 08, 2009, 12:30:49 AM »

They get wierd sometimes. I had one that would read 11.5 at wot no matter what I could lean the car out until it would miss fire and the sensor would still read wrong.

I got a new one and it worked correctly after that. They only cost about $50 I grab a new one every few months now.

d112crzy · « **Reply #13 on:** March 08, 2009, 06:35:53 AM »

They're about $50 online, but every autoparts had them for around 80 or so. I went to at least 10 different parts stores.

bryantaylor · « **Reply #14 on:** March 08, 2009, 02:17:05 PM »

i need the AEM uego one. need to look for the cheapest place to get it.

d112crzy · « **Reply #15 on:** March 08, 2009, 03:12:20 PM »

I've never personally used one of those, but everytime someone brings up the AEM units, JD always says that they read off quite a bit from most other widebands.

BigD · « **Reply #16 on:** March 08, 2009, 04:05:41 PM »

Quote from: bryantaylor on March 07, 2009, 08:55:57 PM

is there a way to test the sensor. i have had the same sensor in my AEM for like 3 years, still reads, but is it still accurate?

you can test the aem dont know about other brands tho O2 Sensor Test - How to check to see if your aftermarket O2 sensor is bad

bryantaylor · « **Reply #17 on:** March 08, 2009, 06:41:48 PM »

dude, thats a great vid. i am going to have to pull the sensor out of the exhaust and try that.

ratcityrex · « **Reply #18 on:** March 08, 2009, 07:00:54 PM »

thats awsome info Good find

patsmx5 · « **Reply #19 on:** March 08, 2009, 07:05:36 PM »

With the LC-1 I have it will give a code if the sensor is bad.

bryantaylor · « **Reply #20 on:** March 08, 2009, 07:09:49 PM »

fuck the LC-1. i have a first run, it sucked ass.

snm95ls · « **Reply #21 on:** March 08, 2009, 10:51:57 PM »

Quote from: bryantaylor on March 08, 2009, 07:09:49 PM

fuck the LC-1. i have a first run, it sucked ass.

Mreh. I still have one and it works great. Going on 3 or 4 years now.

92CXyD · « **Reply #22 on:** March 08, 2009, 11:32:12 PM »

Quote from: d112crzy on March 08, 2009, 06:35:53 AM

They're about $50 online, but every autoparts had them for around 80 or so. I went to at least 10 different parts stores.

The part # is bosch 17014 works great I usually them for less than 60usd

turbo4life · « **Reply #23 on:** March 09, 2009, 02:00:17 AM »

new wideband sesnors

http://www.amazon.com/gp/product/B000BZI4ZW

$49.99 NEW free shipping!!!

92CXyD · « **Reply #24 on:** March 09, 2009, 12:18:49 PM »

Quote from: turbo4life on March 09, 2009, 02:00:17 AM

new wideband sesnors

http://www.amazon.com/gp/product/B000BZI4ZW

$49.99 NEW free shipping!!!

Thanks mang.

I need to order a couple more of those. ;D

MantisX · « **Reply #25 on:** March 10, 2009, 03:52:10 PM »

Maybe try recalibrating it?

MantisX

ratcityrex · « **Reply #26 on:** March 10, 2009, 03:58:53 PM »

Quote from: MantisX on March 10, 2009, 03:52:10 PM

Maybe try recalibrating it?

MantisX

Plx m300 self calibrates, So no calibrating is needed.

green91 · « **Reply #27 on:** May 03, 2009, 07:02:24 PM »

Anyone know of a generic replacement for the AEM Uego?

92CXyD · « **Reply #28 on:** May 03, 2009, 07:34:43 PM »

reread the thread the part # and cheap place to them is right there. ;D

Joseph Davis · « **Reply #29 on:** May 04, 2009, 02:11:39 PM »

Quote from: bryantaylor on March 08, 2009, 07:09:49 PM

fuck the LC-1. i have a first run, it sucked ass.

It's still more accurate than that AEM POS you have.

Also, Klaus warranties all of his defects. It doesn't matter if you are the original owner, have a receipt, etc, if it's one of the early ones with the glitchy analog outputs consider it replaced.

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Author Topic: How do you know when a wideband o2 sensor is bad? (Read 44622 times)