Prom problem?

[Bob Valentine]

You're supposed to unplug the ECM every time?   (*grin*)

I have a NC pushbutton switch that I've been meaning to put inline with
power to the ECM for easy resets.   

-> Bob Valentine
-> bob at tecmark.com

At 12:52 AM 3/6/2001 -0700, you wrote:
>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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>
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