Alright,

So I picked up a used AEM UEGO wideband from a good buddy for cheap as hell. I know FOR SURE it worked in his Grand National because I helped him wire it up. He sold the GN and the part sat forever. It was used for maybe a month.

I decided it would be a cheap investment to put it onto my truck and got a bung welded in directly after the header collector. Installed everything and started the truck up. It appears to work for a few seconds then goes full lean.

New sensor, damn, so not that great of a deal. Get the new sensor in and install and THE SAME **** HAPPENED! Ahhh so mad.

So it must be a wiring issue. I did a continuity test on all the wires and they all checked out. I changed the power wire so it's wired directly to the battery and still nothing.

Anyone have any great input? I've Googled the **** out of the issue and haven't come across anyone who has gone as far as doing a continuity test to test the wiring. Some people have changed sensors with success and others have still had issues.

 

I dont remember if the AEM has it but try a free air calibration

 

where in the header is it installed? I have mine mount in the driverside header right after my o2 sensor aem is one of the best wideband to use.

 

Yeah google for the user manual and see the instructions about calibrating it.

 

It's mounted right where the driver side header slips into the y-pipe. Maybe 6 inches after the oem narrowband.

I was thinking Ill switch positions and see if the AEM works.

Ill also try the calibration!

Thanks for the suggestions!

 

they do have a calibration process for new sensors.

 

Just a bump for some possible additional help. I've just had the gauge unplugged and its killing me seeing it sitting there being useless.

 

Have you contacted AEM? In my experience they are pretty helpful. Did you mount the sensor in the orientation that the instructions say to? I wouldn't imagine that's the problem though, especially with a new sensor having been tried as well.

You don't have to calibrate the AEM setups.

Maybe in the long period of time that it sat around it got banged up for something and is actually damaged?

Have you driven with it to see if it ever comes back into range or is this only being checked at idle?

 

you have it grounded properly? check if the sensor gets hot when power is applied. AEM wideband comes pre calibrated

 

why dont you just change to sensor and see if that fixes it.