I was redoing the grounds to my wideband, and when I had everything back in place, the car won't fire. The CEL is on, the engine turns over, but it won't start. Some things I've noticed:

-the PGMFI relay only clicks once
-I tried to pull the codes, but there isn't one stored

What I just found out went wrong was that I accidentally grounded the ECU power input (OBD1 pin A25) through the SRS unit ground . What would this mess up? Would the car still start if I fried the SRS unit? Would it fry the PGMFI relay?

 

You touched the power input wire to the frame at the SRS grounding point? That would make whatever fed power to the ECU at that point send the power to the frame (instead of the ECU)....possibly shorting out wherever that power was coming from. Check fuses and trace that wire to look for problems. Hope that helps...

 

Good call hawk. I bet the 10A fuse under the hood is blown, I think its the clock/radio one or something, I don't remember fully.

 

Good call. According to this: http://www.superhonda.com/foru...17405 A25 gets power from the main relay. Any idea what fuse that would be fed to/from? God, I'm so pissed at myself right now.

 

There shold be diagrams of the fuses inside the fuse box....or you can just look for a blown one

 

Look under the drivers side fuse box. I remeber when i did my relay I blew a fuse under there

 

All the fuses are fine, damn. Guess I have to check the PGMFI relay now.

 

So you say the CEL is on but no codes flash?

What other wiring did you mess with? It sounds to me like you have a major ecu problem. Check for voltage at that pin that you messed with.

 

Fixed it! While going through the troubleshooting for the main relay it turned out to be... a fuse that I somehow missed .

Today's lessons:

-triple check your wiring when messing with ECU wires
-check every fuse before going through the pain of pulling and testing the main relay

Thanks to those who chipped in.