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HEGO problems

Old 11-08-2018, 08:24 PM
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HEGO problems

Hey everyone, been awhile since my last visit. Been struggling to get rid of my hego not switching code. I replaced it last week, but am not entirely sure that the plug is pinned correctly. The sensor has 4 wires, black, grey, and 2 white. the vehicle side is blk, ground, grey/yellow, hot in run, grey/lt. blue, pin 29 at ECM, orange to pin49 at ECM. I'm not sure how to check the sensor to figure which wire goes to what. I have even tied finding another truck to compare it to, no luck yet.

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