In a message dated 2/25/01 11:56:51 AM Pacific Standard Time, bernd@texas.net
writes:
<<
The IAT, MAP, TPS, CTS, O2 and several other sensors are used under
cruising. Under WOT, the O2 is ignored...but the TPS, MAP, CTS, and IAT are
used.
>>
Sure, I understand that. Let me try and rephrase the question. Lets say that
the O2 sensor sees a extreme lean condition at idle. It tries to compensates
by increasing the pulse width as far as its parameters will let it. When this
occurs, is the maximum pulse width the PCM will allow, period? If this is the
case, then even though the IAT has input, its input is useless in terms of
further richening the mixture due to the O2 sensor already maximizing the
pulse width. If this were the case, than outside manipulation of the IAT by
me would not yield any richer of a mixture. An extreme example,I know..
Tom
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