Hi guys, I’ve got a 96 wrx wagon.. just yesterday I was driving along the motorway at 100km and the engine cut and went into limp mode. Wouldn’t rev past 4.5rpm and idle was all over, surgey and ran like junk all the way home. Found the new o2 sensor I had wires months before all the wires were melted together so I cut it off and now can rev all the way but still surging and have no boost past 5psi. I have cel 44 45 and 24. I have no power to the boost solenoid in test mode or any time for that matter. Could the melted 02 of cooked more in the ecu or could a bad IACv (cel 24) be making the ecu stay in limp mode? Also I just pulled the ecu and can’t find anything burnt.. don’t really wanna buy another if it’s not that.. Cheers nick

Thanks for the reply! No haven’t changed o2 found the wires melted all the way through the loom to near the grommet in the firewall peeled them apart and cut them off, put power on the yellow red that splits off in the loom to accessory power and now have no cels and near normal boost. Cars basically running the same as it did when the old o2 sensor was disconnected. I could make a new loom to go back to the O2 but think I may just leave it out as I logged some afr before with it unplugged and it seemed ok. since sold the wide band so can’t really verify that 🤦*♂️ guess I should have a bigger budget for doing this car justice. Any ideas appreciated as to why the 02 would melt the wires like it did.? Cheers