What are the usual symptoms for ECU failure? Will the car still be started but cant rev up? CEL? Its a 93 Legacy

Thanks for the help

If the car wont rev. up there is a chance the inside of the muffler has collapsed. Check the tail pipe and make sure someone has not stuck something in it.

What are the usual symptoms for ECU failure? Will the car still be started but cant rev up? CEL? Its a 93 Legacy

Thanks for the help

I've only come across one bad ECU, and that was when I revived a junkyard car.

It would run and idle, but would only rev to about 2500 with no power. Totally unacceptable to drive. And it threw all kinds of wierd codes that would change every time I checked them, no matter what I changed or plugged it had no effect on the codes I would get.

I changed the ECU and it was magic.