Quote:
Originally Posted by roflwaffle
AFAIK that shouldn't happen. The ECU should start reading info from the post cat oxygen sensor within a few seconds and if the mixture is too rich lean it out.
|
You assume, by this statement, that all cars are OBD-2... not all cars have a post cat O2 sensor, and even a large number of those that do, only use it to see whether the catalyst is actually doing something, not to adjust the fuel/air mixture.
IIRC, it wasn't until the advent of OBD-2b that the post-cat O2 sensor's signal was used to help adjust AFR in comparison to the signal from the pre-cat sensor.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
