GM ECM injector driver capacity

Bruce Plecan nacelp at bright.net
Wed Aug 26 18:55:23 GMT 1998


From: Jennifer and Brock Fraser <fraser at forbin.com>
Subject: Re: GM ECM injector driver capacity


it would be a good idea to monitor it's temperature rise with 8
>>injectors, and then with 16. If the driver can handle 16 at reasonable
>>temperatures, you could mount a larger heat sink or small fan on it to get
>>through the higher ambient temperatures found in the car.

Not a problem
>
>Bruce, while you are tap dancing, maybe you could hold your thumb on the
>drivers to see if they are getting hot.  Of course, like Ken says, running
8
>injectors first would be a good baseline.  To reference your wiring
>question, I'll send you a plug-n-play solution that all you have to do is
>hook one end to the drivers, and the other end to +12v.  As you mentioned,
>I'll have to get some of those little contacts to use on the injector
>terminals.

Cool, and yes
>
>> The idea of putting injectors in series will reduce the load on the ECM,
>>however you have to make sure that the injector will work in this mode.
>Since
>>you only have 12 volts to pulse the injectors, if you put two in series
>each
>>will only see 6 volts. Don't know if they will respond quick enough at
that
>>level.

Has anyone built the injector flow bench, and would they be willing to
actually measure what happens in the above?.
Cheers
Bruce




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