DIY_EFI Digest        Saturday, August 21 1999        Volume 04 : Number 479



In this issue:

	Re: DIY_EFI Digest V4 #474
	1226870 Eprom Question HELP!

See the end of the digest for information on subscribing to the 
DIY_EFI or DIY_EFI-Digest mailing lists.

----------------------------------------------------------------------

Date: Fri, 20 Aug 1999 16:10:36 -0700
From: rpettibo@xxx.com
Subject: Re: DIY_EFI Digest V4 #474

I think the simple answer to this question is  a fuel pump is designed to
pump against head pressure.   In other words push fuel.  Fuel injection
pumps are not engineered to act as a suction type device.  Therefore,
restrictions on the inlet side must be kept to a minimum.  This is why the
pump must always be at or below the fuel supply level to insure the pump
never runs dry.

If the fuel filter begins to restrict the flow of fuel and the pump runs
dry it will fail.

------------------------------

Date: Fri, 20 Aug 1999 21:27:43 EDT
From: Mikepoore@xxx.com
Subject: 1226870 Eprom Question HELP!

I tried programming a 2732 eprom for my 1226870 ecm. I used gmedit to do it. 
Everything checked out ok on the programmer. All I changed was the cooling 
fan temps and idle speed. I plugged it in and the car will start and run 
fine. The problem is that the SES light flickers very quickly. If I plug my 
scanner into the ALDL the flicker goes away even after unplugging it, but 
once I shut down the engine and restart it the flicker returns. 

Am I using the wrong speed eprom? 
Does it matter if it's a 2732, 2732a, 2732b, or 27c32?

Any suggestions or comments appreciated. I don't want to test drive the car 
until I am sure I it isn't going to melt.

Mike Poore

------------------------------

End of DIY_EFI Digest V4 #479
*****************************

To subscribe to DIY_EFI-Digest, send the command:

    subscribe diy_efi-digest

in the body of a message to "Majordomo@xxx.  

A non-digest (direct mail) version of this list is also available; to
subscribe to that instead, replace "diy_efi-digest" in the command
 above with "diy_efi".