Re: Relocating IAT sensor?

[rr <RRauscher@nni.com>]

I think the problem may be that we are confusing MAT with IAT. The 88h mask
for the '730 (v6), uses an IAT in the air cleaner. There are a bunch of tables
that
use it. I'm still deciphering the code, so I can't get real specific. The IAT is
read
10 times a second.

Ok, took a quick look at anht. Loop segment 10 reads the mat sensor 10 times
a second. Saves the result in L013C & L0061 @ D74C. Looks like the egr gets
disabled when the MAT is less than 30c. Hmm, maybe thats what folks are
noticing when they relocate the sensor. . . (see D812).

I guess what it comes down too, is how much does air density change with
temperature? That is what needs to be compensated for.

BobR.

Dave Zug wrote:

> I'm glad this has come up again.. I never really got a responce before to
> this:
>
> I have not seen where IAT affects ANAYTHING in the '727 / '730. I see it
> written to ONCE and never READ or used unless I'm missing an indexed
> indirect bitwise X or something.
>
> ----- Original Message -----
> From: <OneSS2NV@aol.com>
> To: <gmecm@diy-efi.org>
> Sent: Tuesday, October 24, 2000 7:10 AM
> Subject: Relocating IAT sensor?
>
> > Hello all,
> >    Since I'm going to have the top of the plenum off my TPI to install the
> > adjustable fuel pressure regulator, would it be worth it for me to
> relocate
> > the IAT sensor and plug the port on the bottom with a pipe plug?  I know
> my
> > IAT sensor is out in front on my Impala, and same thing with my friend's
> > Turbo Regal.  What effects, positive or negative, will it have?
> >
> >     Thanks in advance,
> >        Steve Ragusa - AKA the "New Guy"
> >         North Jersey
> >       '85 Monte SS with '87 305 TPI MAF harness
> >         '96 Impala SS

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org