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- Joined
- Jul 13, 2009
- Messages
- 1
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- Vehicle Year
- 1997
- Make / Model
- ford
- Transmission
- Manual
hello,
I have a 97 ranger xlt 2.3l and I now have both of my 02 sensor heaters dead.
They are relativly new sensors (<2 years old)
I have checked the sensors with a multimeter (white wires) and:
-both the elements have a resistance of about 3Ω
-vehicle side:
--ground has about 80Ω to chassis
--hot has about 86MΩ to chassis
--with ignition off: voltage floats (no circuit)
--with ignition on: voltage is 0v
All fuses are fine.
I am left to believe the heater relay is the culprit, if there is one. Does anyone know where it's located? My heins (spelling) manual doesn't say much about o2 sensors; and I never received a manual when I purchased the vehicle.
Thanks in advance,
PS, Tonight I took it on the highway, got it nice and hot, and the light went away; I am sure it will be back on in the morning though.
I have a 97 ranger xlt 2.3l and I now have both of my 02 sensor heaters dead.
They are relativly new sensors (<2 years old)
I have checked the sensors with a multimeter (white wires) and:
-both the elements have a resistance of about 3Ω
-vehicle side:
--ground has about 80Ω to chassis
--hot has about 86MΩ to chassis
--with ignition off: voltage floats (no circuit)
--with ignition on: voltage is 0v
All fuses are fine.
I am left to believe the heater relay is the culprit, if there is one. Does anyone know where it's located? My heins (spelling) manual doesn't say much about o2 sensors; and I never received a manual when I purchased the vehicle.
Thanks in advance,
PS, Tonight I took it on the highway, got it nice and hot, and the light went away; I am sure it will be back on in the morning though.
