Dyekid04

so after finally getting the new motor , blower and clutch back in . We find that my ECM was locked and worthless from the past tuner. Called vengeance got them to order me a new one and flashtune it aswell. Now im missing noid on 4 injectors the inside cylinder on each bank. All injectors have 12v but only the outside cylinders are getting ground pulse. Im thinking maybe im missing a ground somewhere, but I thought the ground signal comes straight from the ECM? Could a missing grond wire be causing certain injectors not to pulse?

Thank in advance

AzMotorhead

Are you checking inj pulses with a Noid light?? or with a DVM?

Dyekid04

Noid light . The outside 4 have noid the inside 4 have nothing only power.

Dyekid04

used , test light to check each injectors power though.

schpenxel

Obvious question.. but have you tried starting the car or are you just checking it ahead of time to make sure it's working correctly?

Dyekid04

yes sir, started it and attempted at CKP relearn . Has a dead skip on those 4 cylinders obviously from the injectors not pulsing. Im curious if a ground wite could cause only certain injectors not to pulse.