[Diy_efi] Holley projection help needed

[Joe Lutz]

It sounds like maybe you have two of the three wires going to the map sensor 
reversed or you have the wrong sensor.  Is it a one bar sensor?  On the 
sensor one wire is 0V, another should be ~4.8ish V and the middle wire is 
the wire returning the signal to the ecm.  It may be at ~2v with the sensor 
pluged in.  Possible this is what they are talking about.

Joe


From: Jeff Behrens <jwg94 at yahoo.com>
>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>To: diy_efi at diy-efi.org
>Subject: [Diy_efi] Holley projection help needed
>Date: Mon, 2 Jun 2003 07:45:36 -0700 (PDT)
>
>I purchased a holley projection 4di system and am
>having some issues with it.  My map sensor reading
>with the key on ignition off is 192 kpa, the book says
>it should be 101.  It also states the voltage to the
>sensor should be 2 volts with the koio.  Mine reads
>4.8 volts.  The other problem I am seeing is the
>system is constantly changing states between idle,
>run, and standby making the idle terrible.  Any help
>would be appreciated.
>
>
>Jeff
>
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