My 90 accord ex has been blowing the 10A ecu fuse. It happened two weeks ago and I replaced the fuse. Then it has happened two times this week. Does anyone know what the problem could be??

 

Anyone????

 

I only see two 10 amp fuses under the hood, one for the hazards and one going to the main relay (ECU Power), after the relay it goes to the injector resistor then through each injector, other branches go to the EACV Valve and the O2 sensor.

I would start with ohm testing each item and its wireing. A short could be happening when going over bumps??? The O2 wiring could be grounding out, if you disconnect the O2 sensor for troubleshooting and test driving the wire harness could still ground out when going over bumps. An injector that ohms out too far out of range is suspected bad, compare them all and see what you get.

EDIT

Worse case it may need an actual ECU. Have seen this after a bad jump start but there could be an actual bad ECU in your case.

 

Great thanks for the heads up. Will advise what happens!!

Thanks

 

Ok. Jacked the car up and found some of the wires were rubbing against the front axle. They appeared to be bare on a couple of them. Taped them up seperately so there should be no contact. Hopefully that will fix the problem. Will advise if there are any more problems.

 

Lets pray for a fix there and if there is any way to find out what those wires went to incase it was the O2S or injectors or whatever please, I know that may be a hard one to figure out in case it was the fix.

 

Great thanks for the heads up. Will advise what happens!!

Thanks