My03evo

iTrader: (1)

I started noticing my AEM wideband giving Whacky readings, sometimes its ok sometimes its fine, car runs the same as normal and there's no way it's really running what it's saying, I found a Bosch 4.2 sensor hooked up to a harness under my pass seat (literally under the seat) which I believe is the same sensor so I might try swapping out the sensor or testing the current sensor like they do on the aem website.

Anybody else have this issue? I've searched and seen others with the same issue but was not resolved. Could it be the controller or most likely the sensor?

Tfresh

iTrader: (18)

how old is the sensor? I had a similar issue with a AEM that was on my 951 I swapped the sensor out for a new one and it solved the problem.

My03evo

iTrader: (1)

I honestly don't know, I just bought the car few weeks ago...car had 30k miles on it, and the new motor setup and all the major work has like 5k on it now, so somewhere in between but prob closer towards the 5k..

sleeper04

iTrader: (26)

i would buy a new sensor, more than likely thats the problem

MR. EVO MR

iTrader: (9)

+2

my aem wb did the same, at cruise it would read super lean, the it would just freeze super rich. I put a new sensor, everything fine since.
FYI the original sensor was like only two months old, maybe bad batch?
Gl

oneofakindtrini

I agree on replacing the sensor. Take the sensor out and inspect it. Can the weather conditions around the car impact the life of the sensor?

Boost_Inspired

iTrader: (37)

i had my going full lean and rich and other crazy things , turned out my sensor was trash

My03evo

iTrader: (1)

Nice, it all seems like the same thing...As long as it's just a sensor and not a bad gauge or controller or something fancy I don't mind and now I'll know how old my sensor is. I'm going to try the sensor I found under my seat as long as it's the same part number and all that and see how that goes

EvoJoeIX

iTrader: (16)

before you go spend 80 bucks on a sensor, check it to make sure it is actually the sensor

pull the sensor out of the bung, keep it plugged in, spray a rag with brake cleaner, place the sensor in the rag, and watch the gauge. if it goes rich then goes back to the three dashes, the sensor is bad. if it stays at full rich the whole time, sensor is good

jdr7919

iTrader: (4)

I kept having the same type of issue and ended up going with the LC1.

My03evo

iTrader: (1)

Thanks Joe, I was going to try that also....also can use the old torch test, that and other ways can be found on youtube

This is the link from AEM on how to test it the brake clean rag way in case someone finds this in a search and wants to know how.

http://www.youtube.com/watch?v=1mb4VmDd0ao


I'm cheap so I'm going to test it and swap out my other sensor first before I buy anymore sensors

My03evo

iTrader: (1)

Not totally sure about that but the sensors have an air sample tube like a vent and if it gets clogged or at least with the old style narrowband if you sprayed brake cleaner around the vent just the fumes of it it could damage it internally, also using crappy silicone supposedly can harm them, and E85 and probably meth has a role in it but not totally sure.

EvoJoeIX

iTrader: (16)

if your sensor is mounted downward( 8 oclock to 4 oclock) on the pipe, it can shorten the life of the sensor.

My03evo

iTrader: (1)

Correct, thats mainly because of any condensation which cant really build up there since its at the top of the exhaust where if there was some it would drip down and lay at the bottom of the downpipe but yeah for any other spots it deff should be done.

Mine is pointed down, as in the wires are pointing up and the sensor is at the top of the pipe, where it should be

awdordie

iTrader: (1)

Not to steal ur thread but this happened to me as well. At first it seemed like it would bounce around not reading anything. Now the gauge doesn move. It stays at 14.9. Is this a symptom when the sensor goes completely out or somethin else?