What is your Commanded AFR at start-up?
09-06-2004, 10:46 AM
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What is your Commanded AFR at start-up? On cold start up mine is between 4.5 and 7.5 which seems very rich to me. As soon as the engine fires and starts running the AFR goes to ~10.5:1.
On warm starts it is around 11:1 and goes to 12:1 after the engine starts to run and then on to 14.7:1.
Thanks
On warm starts it is around 11:1 and goes to 12:1 after the engine starts to run and then on to 14.7:1.
Thanks
09-06-2004, 09:44 PM
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Sounds about right the o2 sensor are not used on startup (either cold or warm). On cold startup the o2 are not used until the closed loop enable temperature is met, around 142 deg F. On hot starts, its the temperature and I think some sort of time?
Gary
Gary