From digest: 2732 eprom changed caused SES light

ECMnut at aol.com ECMnut at aol.com
Sat Aug 21 12:54:18 GMT 1999


Hi Mike,
you didn't specifically mention changing the checksun.
Making the mods you've described, and ignoring
it colud cause the SES light.
Mike V
> 
>  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



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