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Discussion Starter #1
Hey Guys,
I've been having a little problem with a misfire from a stuck open injector on my Mustang (1996 Gt with a 4V swapped from 97 Cobra). I borrowed a buddies fuel injector node kit and sure enough my #1 cylinder injector plug always keeps the light on with no pulsing. From what I have been able to find this either means that there is a bad ground for this wire or there is a problem with my ECU. Does anyone have any advise on testing either of these? Thanks!
 

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NOID light

disconnect the battery neg

unplug the ecm, unplug the injector in question

reconnect the battery

take a test light to battery positive and send power to the inject negative at the harness

if it lights, you have a short to ground, find it

if it doesn't you have a bad driver in the ecm, replace it.

simple.
 

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NOID light

disconnect the battery neg

unplug the ecm, unplug the injector in question

reconnect the battery

take a test light to battery positive and send power to the inject negative at the harness

if it lights, you have a short to ground, find it

if it doesn't you have a bad driver in the ecm, replace it.

simple.
Is there schematic for which driver controls which injector? Just wondering. Thanks
 

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for the ecm?
 

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Discussion Starter #7
Hey guys,
So I finally got around to testing it and it is shorted to ground. Sorry if this is a bad question but I'm not entirely sure the best way to trace it without pulling half the harness of the engine. Any advice would be much appreciated. Thanks again
 

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an EVTM or good diagram

will have all the ground locations.
 
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