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02 Sensors??
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19th June 2007, 19:56
CdRsKuLL
Junior Member
Join Date: May 2007
Posts: 12
I assume if its a 4 wire 02 sensor then two wires are for the heater, one will be earth and one will be signal. The heater is used to get the sensor up to a operating temp quicker.
hope this helps
Steve
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