LT1 EFI Question

[Eric Elliott]

Hello,
Older GMC ECMs diddled the EGR & looked at injector duration to se if EGR
functioned. So it had to actually change AFR via EGR to pass test. Test was
done after engine warm.
My new 5.4 L measures EGR flow with a differential pressure transmitter.
Another case where a resistor won't fool it.

Eric
-----Original Message-----
From: Ron Tyler <dcmckenna at worldnet.att.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Thursday, April 02, 1998 9:56 AM
Subject: Re: LT1 EFI Question


>BTW, There is no temp sensor for the EGR, so I'm assuming that the PCM
>is verifying its operation through current measurement. Is this true? If
>so, then using a resistor here should also satisfy the PCM
>
>--
>Ron & Stephanie Tyler
>'72 LT1/T56 240Z
>http://www.whit.org/jcaudle/LT1-3.jpg