Starts but dies

[myfirstyota]

hello everyone. I hope you all are holding in there.

So appears I'm having a new issue with blucar (4" lift and 28" tires)
The engine has approx 410,000km now and was running fine till just before Christmas. I was at a work Christmas party (outside in our parking lot lol) when I started my car to warm up before I left. When I came back to the car, it had stalled out. I tried starting it for about half an hour and it would fire up for a second then die. Eventually I got it running and never had a problem again till yesterday.

Again I started the car to warm up before leaving work. As I was walking g back to the shop I heard it die again. This time I was able to get it running in about 5 min. It drove home fine. Then I went to get groceries and the same thing happened. Another few attempts and it was running fine again.

Now this morning the same thing happened. Except after trying for 20 min I couldn't get it started. There are codes for throttle pedal circuit but im sure they were there before all this. I noticed a new code for maf sensor p0102.

I've also noticed the tach isn't responding when cranking or runnig breifly. Also the cold temp light flashing during cranking and sputtering.

This car owes me nothing with this mileage and I actually made money on this car when the last one was rear ended with what the insurance paid me for the last one and what I paid for this one.

Any ideas? Clean/replace maf? Drag to scrap yard?

Edit: after more searching, I've come across TSB #0344-08 (faulty engine e wire harness) listing throttle and maf codes as some of the identifiers. I do still have the original engine harness from my 2zr swapped 2007 lift back. Should be the same harness right? Hopefully without the issues? I dont think it would be a bad idea to swap the harnesses and find out.

Any other thoughts?