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Old 06-22-2017, 07:35 PM   #4
Mw548
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Join Date: Mar 2017
Location: Zimmerman mn
Posts: 70
Re: 1951 Need help starting.

Okay now i have power to ecm i dont have fuel pump prime on key. If i jump the relay truck runs. Is there an input the ecm is looking for to get the fuel prime before it starts. I see theres an input for park nuetral on the ecm. Does that input stop the fuel pump relay or stop the truck from cranking all together? Brake switch possibly?
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