O2 sensors at WOT?

[PMDRACER at aol.com]

In a message dated 11/3/98 9:56:08 PM Pacific Standard Time, bartlett at slip.net
writes:

<<  Might be because WOT enrichment pegs the O2 sensor to the rich side.
 
 And then the 02 sensor would try to trigger the ECM/U to lean the mixture
 which, presumably, you wouldn't want.  Hence the open loop at WOT ?
 
 Jeremy >>

Actually, the ECU is progtrammed to IGNORE the O2 input at WOT. The ECU is
programmed to err on the rich side. A rich mixture is necessary for max power,
but a rich mixture will not do internal engine damage like that of a lean
mixture will.