I have been trying fix an eletrical problem but cant seem to find the culprit. THe problem is that I have two relays one oem from ford and the other GP sorensen from discount. What's happening is that my fuel pump depending one which relays I use either makes the pump keep priming until I turn to OFF or doesn't prime at all. Here's what I have done so far:
- REplace FP relay under seat and behind ECM with discount auto = no prime
- Use OEM ford relay under seat and discount auto relay behind ECM= Wont stop Priming ( reverse them and = no prime)
- Replace fuel pump with new 190lph edelbrock.
- Checked all grounds and inertia switch
- Brand new battery
- tried running codes with scanner but never got anything but a solid light
- have 12 volts at pin 22
- checked FP relay lt. blue/orange wire with ecm disconnected for 10k+ ohms and got nothing which would lead me to believe its a short from the relay to the pump
according to the forums but I am not sure.
I either think it's a fubar ECM or a short but would like to know why the relays are doing that and also If there is a way to check if the ECM is good, before I buy one. I am kinda new to the electrical stuff but have done extensive searches on corral, stangnet and *******.com and have all the diagrams but I am still guessing. Any help apreciated.
- REplace FP relay under seat and behind ECM with discount auto = no prime
- Use OEM ford relay under seat and discount auto relay behind ECM= Wont stop Priming ( reverse them and = no prime)
- Replace fuel pump with new 190lph edelbrock.
- Checked all grounds and inertia switch
- Brand new battery
- tried running codes with scanner but never got anything but a solid light
- have 12 volts at pin 22
- checked FP relay lt. blue/orange wire with ecm disconnected for 10k+ ohms and got nothing which would lead me to believe its a short from the relay to the pump
according to the forums but I am not sure.
I either think it's a fubar ECM or a short but would like to know why the relays are doing that and also If there is a way to check if the ECM is good, before I buy one. I am kinda new to the electrical stuff but have done extensive searches on corral, stangnet and *******.com and have all the diagrams but I am still guessing. Any help apreciated.