O2 Sensors, Fans, SES HELP!!!
06-18-2011, 10:19 AM
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O2 Sensors, Fans, SES HELP!!! So I replaced the O2 sensors on my 94 Z28 and now everytime the fans turn on (for either cooling or A/C) it trips a Service Engine Soon light (code 64 Right O2 sensor lean). I scanned the PCM with FreeScan and the cooling system / sensers are working properly. The engine starts in Open Loop, warms up goes to Closed Loop properly and then as soon as the fans turn on.....throws the code 62 and kicks out into Open Loop.
How could the fan have anything to do with the O2 sensor?? Is this a sign of a screwed up PCM? Any help is appreciated. Thanks!
How could the fan have anything to do with the O2 sensor?? Is this a sign of a screwed up PCM? Any help is appreciated. Thanks!
06-18-2011, 03:08 PM
#2
fans and o2 sensors are actually on the same fuse under the hood. so it could be happening. i dont know what the problem is but im sure someone will help u out with this
