Hey, I have a 1990 CRX DX with a B18A, converted to OBD1, using Hondata S200b. Setup is a DRAGIII kit, 450cc injectors, and a intank walbro fuel pump. I was at work about to leave and I went to start my car, before I start I always wait for the fuel pump to finish priming. So I turn the key and it doesn't start. I take the key out and try again, no fuel pump priming, no buzzing from the main relay. I am also getting a code, it's a constant code which is bad ecu. I get a ride home and try the ecu(p75 chipped for hondata) in my brothers project car 92 dx hatch. It starts but i cant see if it has a code since he has no dash, cluster or anything. I cant think of what can be causing this code. The only thing I can think of is the fuel pump wires came out of the butt connectors or something. What do you guys think? But would this cause a CEL?, and the main relay not to buzz like usual? Please help. Thanks

 

Tried a new main relay, didn't do anything.

 

sounds like a problem with the harness (one or more of the wires not connecting) possibly... did it work before?

 

yes it did work for a day or 2.