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Wideband issues

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Old Jan 20, 2014 | 08:38 AM
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Default Wideband issues

Ok I have a aem wideband hooked it up and read 14.8 didnt move or anything just 14.8 so I changed the sensor same issue. So I bought a innovative and that one starts at 11.9 and increases by .1 every second u till it hits 19.0 and then stops. All sensors are new and I am getting power from the fuse box and ground from a bolt for the main harness. Any ideas on why this is happening?? I kni my afr is good cause it was tunned with both bad widebands in it and the tunner used his own and disregarded mine. Any help or advice would be appreciated thanks.
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Old Jan 20, 2014 | 01:04 PM
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Old Jan 20, 2014 | 04:51 PM
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Default Re: Wideband issues

Typically the AEM wideband stays at 14.8 if the sensor is unplugged or not completing the circuit.
The Innovate will climb like that if you have closed loop on and it's wired to the wrong wire.
But it will also do that if your ground is weak, or if you have an exhaust leak - even a small one.
Splice into pins A25 and A26 on your ECU, they're the most reliable connections you can get.
Monitor the wideband signal via serial in LogWorks to make sure it matches up with your ECU voltage, and be sure you performed the free air calibration correctly. Also make sure you're in open loop.
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Old Jan 22, 2014 | 08:18 AM
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Originally Posted by VegasInvasion
Typically the AEM wideband stays at 14.8 if the sensor is unplugged or not completing the circuit. The Innovate will climb like that if you have closed loop on and it's wired to the wrong wire. But it will also do that if your ground is weak, or if you have an exhaust leak - even a small one. Splice into pins A25 and A26 on your ECU, they're the most reliable connections you can get. Monitor the wideband signal via serial in LogWorks to make sure it matches up with your ECU voltage, and be sure you performed the free air calibration correctly. Also make sure you're in open loop.
Checked the sensor on the aem it's plugged in and changed the power and ground locations the wideband is not connected to the ecu though is that the problem? I thought you can run them without tapping into the ecu

As far as the innovative I don't have a wiring diagram for so it may be possible it is wired wrong

As far as monitoring volatage and log works I do to know anything about
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Old Jan 23, 2014 | 08:28 AM
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