Fuel pump no power
#41
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I have 100% MEFI 3 harness. If I found a MEFI 3 ecm it needs to be for a 502 correct? Also all my other components dist. Injectors etc will still work properly?
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articfriends (04-29-2020)
#43
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I spoke AZ speed he is going to send me the pin out so all I have to do is switch the pins so I can use my ECU ( well for 25.00) This is great news. My ECU already has a tune in it.
Last edited by zerolash; 04-29-2020 at 12:03 PM.
#44
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iTrader: (1)
!. You have Mefi1 ecu and new mefi3 efi harness, correct?
2. You fix the relay problem by rewiring the relay
3. You make ecu work by re-pinning the two J connectors FROM mefi 3 to mefi 1
What about the Knock module then, the mefi 3 harness doesnt even have it wired into it, maybe you can add the wires into the J connector, IDK for sure. We have rooted all of it out before to convert a mefi 1 harnes to mefi 3 but never backwards and last time we did THAT was a couple years ago so its not fresh in my memory.
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articfriends (04-29-2020)
#47
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I am waiting for the tuner to send me a diagram and if it’s just a few pins I’d rather go that way
“ for now”. I would hate to take everything back apart again that’s a lot of work. Thank you for offer I may end up taken you up on that.
“ for now”. I would hate to take everything back apart again that’s a lot of work. Thank you for offer I may end up taken you up on that.