Wideband Not Reading With Aem

[Gsxy99]

Recently installed an AEM EUGO WIDEBAND. I have AEM EMS, and i have the wideband connected to aem ems so I can see the air fuel thru my laptop... When I unplug the wideband sensor from underneath the car, the gauge reads 14.8... It should also be reading 14.8 on my laptop thru aem as well. However, Its reading 5.8. Usually its off by a little, but any suggestions as to why my air fuel is way off?

This is the only thing thats holding me back from tuning... Ill be tuning a built 6 bolt with a gt37r on race gas, and it will be impossible to tune with just the gauge.

<img src="http://i220.photobucket.com/albums/dd54/mcmacc3/newturbo5.jpg">

 

[Gsxy99]

bumpp

 

[turboglenn]

Watch out bumping threads, i found out first hand that it's not allowed here.

As for your issue. Does the AEM EMS read the correct AFR when the guage is plugged in? You state that it goes "off" when you remove the sensor, so i have to ask if it works the rest of the time.

If so i wouldn't worry about it. The guage probably goes to 14.7 by default as open air is not 14.7 that makes me think the AEM EMS is doing the same thing and just defaulting to the 5.8

 

[1992awdlaser]

turboglenn is right. The AEM forums will give you better and faster responses to questions that have to deal with your AEM ems.

 

[blcknspo0ln]

What is the gauge displaying?

 

[1992awdlaser]

What is the gauge displaying?

He said it reads 14.8.

Edit: Or are you talking about when it is connected?

 

[trick engine]

Make sure your o2 #1 Gain is set to match the gauge when the o2 is unplugged. You need to set the gain accordingly to match up .

 

[spyderturbo007]

You might want to check the little screw in the back of the gauge. There are 4 different options that can be changed by turning the screw. If you have it set between two of them the gauge might not work properly.

 

['98 AWD DSM]

Make sure your o2 #1 Gain is set to match the gauge when the o2 is unplugged. You need to set the gain accordingly to match up .

That wont do it because the gain correction rate does not go higher than 2.00. The gauge is reading correctly because it is reading the default 14.8. The issue is the signal from the gauge to the EMS box. It seems to be way off from what is described. The aem forums suck too in plain english. The thing I would say is to make a new calibration map for the sensor.

 

[trick engine]

Do you have the right sensor selected in the sensor set-up ? and did you connect the white wire to the primary o2 input? just going threw the basics first.

 

[Gsxy99]

Yes, and Yes... Any other ideas

 

[trick engine]

When you unplug the sensor from the harness under the car do you see a change in the parameter 02 #1 on your lap top? If so which way does it go up or down?

 

[trick engine]

Also check under configure tab then units and make sure you have the correct setting selected for AFR

 

[Gsxy99]

yeup. units are AFR

 

[trick engine]

I would test your gauge output ( white wire ) with a volt meter and make sure it reads correct voltage for the reading on the gauge . If not then you have a defective gauge . Rare but possable ..

 

[TheBoz]

Is the wideband new, like you never had one in your car. If that is the case then you need to make sure that you car is set to read gas. You need to change it to change it to something else and then back to gas and hit apply, otherwise it will not take affect. Also this is covered in the aem forums. Also check them out.

Good luck

 

[Gsxy99]

thanks for all the help everyone... When hitting boost, the gauge leaned alll the way out so. There was no way the car was actually leaning out that much ### the motor wouldh ave went kaboom.. wripped that piece of shit out, copped a LM1, works like a charm. and i odnt have to worry about it reading with aem because it has its own logging program so.

problem solved, time to make power