Everyone who has an accord or CB7, I need some help. (or just honda heads) What would cause my ecu fuse to keep blowing? its only a 10amp, so idk what it could be. going to double check grounds tomorrow and check on power and main relays. Heres the verdict; put new exhaust on, car wont start. replaced fuse, ran fine for two days. fixed exhaust leak, wont start. keeps popping ecu fuses!!! even tried different p13, no idea. anyone help!!!

CAR:
H22 CB7
p05 chipped with mugen program

 

Since you did some exhaust work, look for pinched wire for the O2 sensor. I think the power for the O2 sensor heater comes from the same fuse as the ECU & other stuff. If that wire is shorted to ground, or maybe it occasionally shorts when the exhaust system moves around?

 

good lookin out, ill check that later on today. I know that its not pinched, but maybe rubbed on something and is shorting out. THANKS!

 

or possibly the wire is severed. have some electrically tape handy. i assume your o2 is screwed in securely. whats your obd. 1 or 2.