ECU fuse keeps blowing

You have a short circuit in the ECU wiring or the components it powers-time to trace the circuit.

Heres a guide on using a volt meter, it will help you check for a short to ground

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring


The wiring diagrams for the ECU are attached below, check for sorts in the power wires from the fuse

I have an 03 Kia Rio approx 67,000 miles - The problem is that the 10amp ECU fuse keeps blowing. I am having to replace up to 5 times per journey as when the car is slowing to a standstill or is at standstill or just set off from lights, junction, roundabout, parking space etc it just blows the fuse and the car stalls. Once fuse replaced it starts and sets off OK (for a while!!). Is this a common fault with the Rio?
What is the problem and is it expensive to fix?
TIA

Most of the time this is a problem with the wiring to the ECU or the ECU itself. I would start by inspecting the wiring that goes to the ECU.
If you replace it I would recommend buying a used one as you can get them much cheaper.

what causes 10 amp ECU fuse to blow

Most of the time when you have a ECU fuse blowing is because one the oxygen heaters has shorted to ground. Start by unplugging the sensors and then replace the sensor when the fuse doesnt not pop anymore. Here is a guide to help you get the job done.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Please let us know if you need anything else to get the problem fixed.

Cheers

Wow so good! you hit it on the money I found the sensor behind the cat that was causing the problem and the car runs great. I love this site.

Thanks for using 2 car pros come back any time