O2 sensors
#1
O2 sensors
I have problems with my O2 sensors. Mine is a 2000, ram 1500. It has two O2 sensors and there aren't voltage in any of those. Fuse is fine. I checked the fuse box and shows in the label, two relays, for the O2 sensors. Those relays are not installed on my fuse box. Are they supposed to be installed? There is not conections in those relay's slots,I mean they are empty.
#4
RE: O2 sensors
..... There shouldn't be any voltage applied to the O2 sensors. The relay and fuse apply voltage to a heater inside of the O2 sensors so that the PCM can go into closed loop faster. I would imagine that if the heaters wern't working the O2 sensor still would. The O2 sensor actually creates it's on voltage depending on the amount of oxygen in your exhaust. The PCM then adjust the fuel mixture based on those readings. The heater inside of the O2 sensor heats the O2 sensor up while the car is warming up so that the PCM can start using it. With out the heaters it will take longer for the O2 sensor to heat up since it has to wait for the exhaust tempurture to rise. Do you have a CEL on? Why do you think you have a problem with the O2 sensors?
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