Car eating O2 sensors! Help!!
Crossposted from the Aem forum. Just trying to see if anyone has went through this.
I have a 2003 Evo 8 using AEM version 2 ecu with the 30-0300 wideband installed 2.5 weeks ago. The sensor is exhibiting what I've come to see as a failing oxygen sensor. I just installed this new wideband as I had the 30-4110 wideband and it was going through oxygen sensors about once a month. The car is pretty modified, running on E85 with 2100cc injectors. Under normal use, the car starts and idles at 12:1 a/f ratio until warmup, and then idles at 14:1 due to size of the cams. The oxygen sensor sits at 9 oclock on my downpipe, about 24 inches away from the turbo. My question is, is there anything I can do to stop this usage of sensors? Once installation of a new sensor, car runs absolutely beautiful until this occurs again. Any ideas? |
Is the O2 sensor heater circuit working properly? If the heater isn't working sensors don't last long.
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I guess I dont know how to answer that. These are Aem gauges/sensors, and never have an issue until they start to fail. I never see a sensor error, or heater error. Is there something I should check?
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Make sure the heater power and ground have continuity, and make sure the power has voltage when you turn the key on.
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Originally Posted by letsgetthisdone
(Post 11834200)
Make sure the heater power and ground have continuity, and make sure the power has voltage when you turn the key on.
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Measure the current being thrown through the heater circuit. If you have good current flow, you will have a good power and ground.
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