ecu signal ground/injector not working

5225 Views 6 Replies 3 Participants Last post by v8only, Feb 11, 2014

D.J

Discussion Starter · Feb 8, 2014

i have beengetting great info off here for a while now so i want to say thank you for all your experience.
i have a 93 5.0 5speed gt that wont start on its own. i have fuel and fire but no pulse to injector. what i have done so far is test ecu pin 46 to 40&60 and it ohm out at .4 but when i ohm out test connector at obd port to ecu harness pin 46 i get nothing at all my meter wont even register. i also tried ohm out test port (black/white wire) to battery ground and get nothing. im at a loss here this car is stock no mods and in good condition for a 93... what the heck is going on? i would like to hear your input cause i may be over looking something

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v8only

· #3 · Feb 9, 2014

Make sure you have key on pwr to pins 37 and 57 at connector and a good ground at 20,40,60. Make sure the thin black wire at batt negative post is connected, as well as ecu ground at kick inside car, and the injector harness ground at the back of the motor, as well as the block to frame ground

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v8only

· #7 · Feb 11, 2014

If your certain your injectors are not receiving signal, at this point u need the evtm for your year

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