>From the temp readings on my OBD-II Scanner, the IAT sensor readings change
constantly. Especially in Closed Loop operation. Under WOT, the computer
does use set parameters so you are correct...to a point...but putting the
IAT in a colder air charge does allow the Dak to perform better in warm
conditions. (Seen that happen on most of the Dak's we've done it to.)
During cruise conditions, the TPS, IAT, MAP, O2, CTS (Coolant Temp Sensor),
and other "variables" come into play as well since there is never a
consistent load on the engine. Yup...one of the readings on the scanner is
"Engine Load"...Not to mention fuel-trim%, O2 sensor voltages (all of them)
and quite a few other readings as well. (About 35 of them)
$0.02 (Now where have I seen that before) ;)
- Bernd
----- Original Message -----
From: "Shane Moseley" <smoseley@ix.netcom.com>
To: <dakota-truck@buffnet.net>
Sent: Monday, April 03, 2000 6:02 PM
Subject: Re: DML: IAS Sensor Relocation..Attn: Bernd
> "Bernd D. Ratsch" wrote:
>
> > I understand that...but when you're cruising down the highway in the
heat
> > (not at WOT), it helps out quite a bit.
> >
>
> It is my understanding that the IAT sensor only comes into play during the
> first few minutes of operation (warm-up mode), wide open throttle (WOT
mode),
> or during an enrichment mode (delta-TPS enrichment for example) and NOT
> during normal part-throttle or cruise. During normal part-throttle and
> cruise, fuel delivery is completely controlled by the O2 sensor and the
> computer will attempt to maintain a stoich mixture of 14.7 to 1 regardless
of
> what the IAT is sending. I know because I watch this behavior on my A/F
> gauge every day!
>
> Therefore, unless you are stabbing the throttle alot or running at WOT -
the
> IAT trick is useless.
>
> Just my $0.02 (don't you just hate that phrase? 8-)
>
> Latr,
>
> Shane
>
> --
> '96 IndyRam-HisIndy-MPI/TB/Pulleys/Coil/Wires/CompTAs
> '96 IndyRam-HerIndy-numbered(#142)"Track Truck"
> '74 Triple-Black Dodge Challenger Rallye 360 home-brew EFI R&D vehicle
> '68 Black Corvette Convertible 427 (For Sale)
>
>
>
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