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[lilpooh21186]

So after my setup shit the bed i scored an ls motor. Now the swap has been in the car for a week now i cant get this bitch to start i get a solid cel. When the service conector is jumped same solid and i dont get any flash codes. with no ecu in there is no cel. I tryed new main relay's grounds chipped and stock ecu's im stumped i dont get a solid cel till the  last plug on ecu is connected. help me so i can sell this pos

[realAgentMurdoc]

i had a similar problem but I had no cels. 

my problem was there was a break in the wire from the ecu to the main relay.  Sounds plausible since you say there is no cel til the last ecu plug is plugged in.

bust out a multimeter and check for continuity from the relay to the ecu and voltage.

[lilpooh21186]

ill have to pick up one of those

[chris]

grounds double check them


especially thermostat ground

[DmC]

grounds double check them


especially thermostat ground

what your explaining is a classic dohh I forgot the tstat housing ground.

[Joseph Davis]

grounds double check them


especially thermostat ground

what your explaining is a classic dohh I forgot the tstat housing ground.

I need a hug.

[lilpooh21186]

switched the tstat ground many times even connected it directly to battery negative no worky with it ungrounded there is no cel at all

[lilpooh21186]

thats exactly what im saying while switching relays when the car is on i get the click so there getting some kind of power hopefully i can find a new harness for today and see what that does

[lilpooh21186]

Went out side this AM and it worked two times so i figured i have to check wiring b/c after cleaning up tools off the engine it wouldnt work.I started checking power and ground signals. Ecu power wire pin d1 was not getting proper power so a wire from the battery power to internal fuse box to the ecu fixed the prob .