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1990 Ford Ranger hego sensor

Tiny
FORDSRULE
  • MEMBER
  • 1990 FORD RANGER
Electrical problem
1990 Ford Ranger 4 cyl Two Wheel Drive Manual 185.00 miles

i am trying to find info on the hego sensor on my ranger. Every scematic I find has 4 wires going into a blank box. It shows NO internal connections. There is
one hot with key on
one ground
one orange
one dark green /purple
I need to know what goes to where inside the sensor. I had a ford explorer 1998 that had 4 of them. The upstream units basically would produce.1-.9 volts + (between it and ground) to the computer depending on o2 levels. Does the hego on my ranger act the same way, and what wires go to what. Thanks bunches mike
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Thursday, April 29th, 2010 AT 7:33 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Dark green/Purple goes to pin 29 of the electronic engine control unit. The Orange goes to pin 49 of the electronic engine control unit. The Orange/black goes to fuse (hot with key on) and the black/light green is ground. Hope that helps.
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Thursday, April 29th, 2010 AT 8:18 PM

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