Did anyone else have to replace their ECU due to misfires happening all the time? I recently had to replace my ECU because it would throw random misfire codes when I would go uphill between 50-60 mph. Sadly I replaced everything else before that i.e. my spark plugs, spark plug wires, distributor cap, spider injectors, fuel pump, fuel filter, rotor cap. Also I have a 2001 Chevrolet Blazer Xtreme.

 

Its almost never the engine computer. Are you saying that in this case it fixed your problem? Is it completely resolved?

George