At 07:01 PM 6/10/2002, Marshall wrote: >Moreover, the 1.9 litre engine runs open loop for the first five minutes or >so. > >By that time, the unheated O2 sensor would have been warmed up - so it's >pointless to heat the sensor - it'd just be wasted electrons. It runs open loop until it sees that the lambda sensor is working (because it's overpowering the bias voltage that the ECU puts on the sensor line) -- the heater would make it start working faster.
d -- David Beierl - Providence, RI http://pws.prserv.net/synergy/Vanagon/ '84 Westy "Dutiful Passage" '85 GL "Poor Relation" |
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