[Diy_efi] GM early 90's V-6 MPFI

[Brendan Patten]

I have a 1990 Cavalier Z24, 3.1l MPFI

The crank sensor does read off middle of crank, hall effect I don't
know.  The crank signal is decoded by the DIS ignition module.  The dis
module sends tach signal to the ECM to control fueling.  The ECM send a
EST signal to the DIS module to control timing.

Might find this helpful: http://www.megamanual.com/ms2/GM_DIS.htm

No cam sensor is used in the MPFI.  When the SFI 3100 came along there
was a CAM sensor to find #1 for sequential injection.

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of Joe Boucher
Sent: Wednesday, August 09, 2006 10:05 PM
To: David Allen; diy_efi at diy-efi.org
Subject: [Diy_efi] GM early 90's V-6 MPFI

Don't the early 90's V-6 engines with multiport fuel injection and DIS
ignition use hall effect sensors and notched disks cast into the middle
of the crank?  Are there four notches in the disk, one for each cylinder
and one to designate number one?  

Do they also use a cam sensor?

Thanks,

Joe B.

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