Installed my AEM wideband and when I start the car it goes through all the #'s and stuff and then just sits @ 14.7. No matter what RPM just stays the same. Any ideas?

 

either it is hooked up incorrectly, or it needs to be calibrated

 

How do you calibrate? I don't think it's hooked up wrong. I just color matched all the wires.

 

That's how mine acted when I hooked it up without the o2 sensor installed.

 

off topic, but how did everyone run the wire through the firewall. mine was run through the outside of the rubber groumet that's directly under the steering wheel and on the firewall. there was no way to pass the sensor through the center of the groumet through the hole and therefore since the groumet does not snap into place with the firewall my car leaks everytime it rains or I wash the car.

Would my gauge still work properly if I cut the wire, passed it through the hole in the groumet, and then soldered it back up and then heat shrink it?

 

Have you driven the car with it hooked up? When it is first started up, it has to heat up. It would take a minute or 2 before it would read. Also, the ecu is set to give you 14.7 A/F when the car is in closed loop. It shouldn't deviate much from 14.7 until you get to a certain load/throttle position. Try a few wide open runs after it has warmed up and see if it works.

 

You can cut the wires, if you want, no big deal. I ran my wires through the ecu plug. It is under the windshield, by the battery. I just cut a small slit in the rubber grommet. You have to remove all of the plastic covers around the battery.

 

I ran mine through the hole that yours is through, only i notched out outside of the groumet so it went back in place, then sealed it all up with RTV silicone and it has never leaked.

 

i believe you have to calabrate it, allowing it to learn your engine.

 

I went to work today with it. It went from 14.6 to 14.9 and that's it. All my O2 sensors are in. I really don't wanna do any WOT runs because I'm not tuned. I need this though to help tune. I've take it to around 4k with no change

 

i drilled a hole through the very upper corner of my firewall and into the brake booster compartment to run all the wiring and lines for my gauges. i cut the wires and then soldered them back together and have no probs with it. i ran a piece of convoluted tubing around then passing through the firewall to cover the sharp edges. careful where you drill up there though, the firewall is double thickness in certain areas and will make it a *****.

 

ya it is a heated o2 sensor like badmonkey said. but my aem fluctuates right from the get go. not sure why yours isn't working unless the o2 sensor is bad, you have a loose connection, or broken wire. nothing to calibrate on those. now to calibrate the eu to read the aem signal, pick "lambda" and manually input "10" then "20". then the eu will read your aem signal in unison to use the target a/f map.

 

I did the settings in the EU. The only thing I can think of is it's mounted about 6-8 inches behind the 02 sensor. Maybe it's interfering with the readings.

 

thats exactly where mine is also. try checkin for a broken wire.

 

All the wires are connected (sodered)in the 6 wire loom going to the sensor. In the 4 wire I have the power(red), ground(black), signal to EU (white). I don't have the blue wire connected. Sharif said I wouldn't use it. Anyone else know what it's for?

 

ZU, the AEM doesnt have a calibration process..it has some kind of internal self calibration thing, that is not user adjustable. It is possible the sensor is bad, or a miswire...but I doubt you miswired it becuase there are only 3 wires that you will use: Power, ground, and analog ouput.
However, you did tell me that the plug to the sensor was cut...I would just verify continuity, and make those wires were reconnected in the proper order.

 

Matt,
Check your email. I sent a copy of the instruction manual, maybe it will have something in there to help you out.

 

I have to put it back up on the ramps tonight, I'll check everything again.

 

Got it, thanks.

 

I double and triple checked the wires I sodered and there good. So either the sensor is bad or the plug that the sensor plugs into is bad. There seems to be a microswitch or something in the plug. Also, you can calibrate it but it says it's not reccommended. Don't no if I wanna try that.