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main relay no ground k swapped ek civic

 
Old 04-02-2018, 06:13 PM
  #1  
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Default main relay no ground k swapped ek civic

im troubleshooting a 96 rhd ek civic with a k swap

rywire harness
aem ecu
the car started and drove few months ago
then was parked in garage with battery tender on it

now it cranks but wont start
main relay is tested and good
no ground to main relay
12 volt and ignition is there
also 12 volt to ecu
and the "thermostat" ground is good also at the terminal on valve cover
it clicks when i ground the relay at connector but fuel pump doesnt prime
fuel pump works when i put power on it at the relay

besides break in the ground wire what else can it be?
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Old 04-04-2018, 11:10 AM
  #2  
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Default Re: main relay no ground k swapped ek civic

any common issues with rywire harness?
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Old 04-09-2018, 09:38 PM
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Default Re: main relay no ground k swapped ek civic

went to look at it some more today
battery tender didnt even charge the battery the whole week

strangely today the main relay has ground but still doesnt click or prime fuel pump
and the ignition chime is gone
this is definitely some crazy electrical issue i just dont know where to look
can it be circuit behind underdash fuse box ?
or dash harness?
it seems like the rywire ecu ground is there
main relay shows ground mmagically
battery doesnt charge and even when jumped still no start

i looked at all the wires and plugs and see nothing that is obvious to me.

is there anything special about jdm EK dash harness at all?

im suspecting either burned ground wire in the dash harness or a short in the fuse box
but its been a while since i dig through the electrical systems on ek so i forgot some already
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