RE: IAT Adjusters -with a tech question for you smart guys

From: Ronald Wong (ron-wong@home.com)
Date: Sun Feb 25 2001 - 15:42:33 EST


Hmmm...I wonder if that's why I have the 24 lb injectors and use so much
gas....but at least that's better than running too lean.

Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY

-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Bernd D. Ratsch
Sent: Sunday, February 25, 2001 11:54 AM
To: dakota-truck@buffnet.net
Subject: RE: DML: IAT Adjusters -with a tech question for you smart guys

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.

-----Original Message-----
From: owner-dakota-truck@buffnet.net
Subject: Re: DML: IAT Adjusters -with a tech question for you smart guys

 This tool will probably help out a lot more in the summer, when the PCM
would have decreased fuel due to the heat. Theoretically, I would think that
the ability to run your motor richer would be more pronounced in the summer.
 While we're on this interesting topic, I have another question for anyone.
I'm wondering how much of a role the IAT sensor plays at part throttle
conditions( when the O2 sensor plays a large role)? I have at times gotten a
check engine light while even idling. It spits out a fuel injector code.
I've
been told that this because the PCM cannot further compensate for the
perceived lean condition feed to it by the O2 sensor. I'm wondering if the
O2
sensor can max out the pulse width by itself, rendering any more additional
inputs by the IAT sensor useless( to further richen it). In another words,
is
the O2 sensor the "trump" card at part throttle conditions, or can it indeed
get help from the IAT to further richen it at part throttle. In the past,I
have gotten my headers to glow and the air fuel meter on the dyno($$) to
read
15:1 at idle!
Tom



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