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pappaj · 02-14-2009, 12:59 PM

Does anybody have and idea where the #8 terminal is grounded for the main relay. It seems I have a bad ground, when I connect this directly to ground the car will run. Also while running when i give the throttle a quick punch it wants to die. I would love to know where that side of the relay is grounded, everything else works fine it is just the fuel side of the relay.

Please any ideas appreciated

jlicrx · 02-14-2009, 02:32 PM

the black ground wire from the Main Relay goes into the harness and connects with the black ECU ground wires from pins A2 and A4 along with a ground wire from some of the sensors and shields and they all end up coming out of the engine harness to a small ring connector that bolts to the thermostat housing:

pappaj · 02-15-2009, 03:38 PM

Thanks alot that is awesome. When the main relay chatters the led on the ecu flickers so I kind of figured they had a common ground. Thanks again

pappaj · 02-17-2009, 06:48 PM

Thanks again that was the exact problem as soon as I went to crack the bolt loose, it was not tight. Something I forgot to tighten when flushing the coolant after the swap. Connection was cleaned up and it runs mint. Thanks

89' Project Civic · 02-19-2009, 11:54 PM

One little ground will do it, man. I am worried about putting my dash back in, incase I miss a ground, hehe.

02-14-2009, 12:59 PM	#1
pappaj Senior Member Join Date: Feb 2008 Location: woodstock Age: 25 Posts: 133 iTrader: 0 / 0% Ride: 89 CRX SI (LS) Rep Power: 5	crx main relay issues Does anybody have and idea where the #8 terminal is grounded for the main relay. It seems I have a bad ground, when I connect this directly to ground the car will run. Also while running when i give the throttle a quick punch it wants to die. I would love to know where that side of the relay is grounded, everything else works fine it is just the fuel side of the relay. Please any ideas appreciated

02-14-2009, 02:32 PM	#2
jlicrx Senior Member Join Date: Jun 2003 Location: Colorado Springs Posts: 1,570 iTrader: 0 / 0% Rep Power: 64	the black ground wire from the Main Relay goes into the harness and connects with the black ECU ground wires from pins A2 and A4 along with a ground wire from some of the sensors and shields and they all end up coming out of the engine harness to a small ring connector that bolts to the thermostat housing: __________________ ZCspeed Racing

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02-15-2009, 03:38 PM	#3
pappaj Senior Member Join Date: Feb 2008 Location: woodstock Age: 25 Posts: 133 iTrader: 0 / 0% Ride: 89 CRX SI (LS) Rep Power: 5	Thanks alot that is awesome. When the main relay chatters the led on the ecu flickers so I kind of figured they had a common ground. Thanks again

02-17-2009, 06:48 PM	#4
pappaj Senior Member Join Date: Feb 2008 Location: woodstock Age: 25 Posts: 133 iTrader: 0 / 0% Ride: 89 CRX SI (LS) Rep Power: 5	Thanks again that was the exact problem as soon as I went to crack the bolt loose, it was not tight. Something I forgot to tighten when flushing the coolant after the swap. Connection was cleaned up and it runs mint. Thanks

02-19-2009, 11:54 PM	#5
89' Project Civic d16a6/d16y8 "mini-me" Join Date: Mar 2007 Location: St. Catharines, Ontario, Canada Posts: 726 iTrader: 0 / 0% Ride: 1990 Honda Civic Si Rep Power: 22	One little ground will do it, man. I am worried about putting my dash back in, incase I miss a ground, hehe.

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crx main relay issues