When is a heated 02 sensor necessary ?

[Bob Valentine]

I belive the '730 looks at the number of 02 cross-counts to determine
readiness, sounds familiar from somewhere in the archives.

Mine goes into C/L on a hot restart just as soon as 02 cross-counts go up.
Leaving the power to the 02 sensor disconnected and it takes measureably
longer to go into C/L, with a corrosponding longer time until cross-counts
go up.

-> Bob


At 05:12 PM 11/1/2000 -0500, you wrote:
>>  It seems as though this would help any motor go
>>closed-loop quicker, improving economy and performance.
>
>Not to my knowledge.  With the 730 ECM there is never a look at the stock 
>O2 sensor to see if it is 'up to temp'.  
>
>Tim
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