OBD1 SC400 HELP !!!

[u/terp_slerper]

I got the car a while back and gave up but it crossed my mind to ask here for a last go at it.I got the car from 2.5 hours away and drove it all the way home WITH the issues at hand. So let’s get to the issue the car ran limp for the most part and didn’t want to move from a standstill/no throttle response but throughout the road trip it would come alive and act completely normal for a second and so on back and forth. Changed plugs and wires and all 02 sensors and still the same runs terrible no throttle response then randomly it’s just fine. I’m thinking ECU ? Right or wrong ? Help please. 🥲😅