Quote:
Originally Posted by 2000mc
gives me an idea though...
if you have a car with a heated oxygen sensor, would turning on and leaving on the ignition for 10-30seconds or so, and then starting the car, help you get into closed loop faster?
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No.
For closed loop you need to have engine temperature at normal operating range, oxygen sensor is heated up well before warmup phase of engine is done.
Even more if you have heated oxygen sensor, which most cars probably have today.