Take a look at the OBDII standards and methodologys articles posted on
www.OBDii.com for an explanation of the second O2 sensor.
> -----Original Message-----
> From: N2mopars@aol.com [SMTP:N2mopars@aol.com]
> Sent: Wednesday, July 22, 1998 5:50 PM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: O2 sensors
>
> In a message dated 98-07-22 15:26:04 EDT, you write:
>
> << I can understand the two O2 sensors around the cat , the first to
> manage
> the injectors and the second to keep an eye on the cat itself , but I
> still
> don't know why you need the other two ?
>
> >>
>
>
> To monitor the differences between each bank of cylinders.
>
> Brad
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