HEGO problems
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Elder User
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From: Small acerage in Nebraska
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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Elder User
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From: Small acerage in Nebraska
That's one half of the problem. I am going to chase the orange and gray/yellow back to EEC, make sure I have continuity. How would I check the sensor side of the plug, it could be they give me the wrong sensor.
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Elder User
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From: Small acerage in Nebraska
I'm using the factory type EFI standard issue 1991. I haven't had time yet but I want to check the orange wire to make sure it has continuity all the way to the EEC. Yesterday my speedometer gear stripped in the cold weather so now getting a code for no VSS signal now as well.
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