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  1. Noobie Bronco Tech Questions. Flame free zone!
    I would like to ask a diagnostic specialist. Below is a picture of the 1994 EEC-IV PCM pin assignments. #29 is the HO2S input and #49 is the HO2S ground. #49 HO2S ground is not connected to any other ground (eg #20, 40, 60). I presume it is grounded through PCM. I'm currently troubleshooting...
    eec-iv ho2s pcm
  2. Noobie Bronco Tech Questions. Flame free zone!
    I would like to hear from someone who knows more. Question is about my 1994 351W EEC-IV. The symptom is that the idling speed drops abnormally when warming up after a cold start. Specifically, it goes into closed loop at ECT 77°F and simultaneously drops to about 400rpm. It will remain on the...
    351w ecm eec-iv idle problems
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