Prom problem?

[Programmer]

Is he perhaps leaving the PCM plugged into the harness when doing the chip
change ?

Lyndon.
-----Original Message-----
From: Bob Valentine <bob at tecmark.com>
To: gmecm at diy-efi.org <gmecm at diy-efi.org>
Date: March 5, 2001 9:51 PM
Subject: Re: Prom problem?


>I've had this occasionally with my '730 (running 730 code *^),  Reseating
>the eprom usually fixes it.   Sometimes the idle goes wierd after a new
>chip, quick cycle of the power to the ECM fixes it every time.
>
>I've learned is to watch the CEL after putting in a new chip.  If it
>doesn't do one quick blink after power up, something's wrong.
>
>-> Bob Valentine
>-> bob at tecmark.com
>
>
>At 08:07 PM 3/5/2001 -0600, you wrote:
>>Well I'm having a slight problem with the 749 code in the 730.  Seems when
I
>>swap chips the ECM wants to get a check engine light and run like total
>>crap.  I pull the power and EPROM and swap everything back and forth and
>>after a couple times and then it works.  Anyone know a way around this?
>>Like something that works almost all the time.
>>
>>Dan
>>
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