'89 240 warm engine restart and stalling
 

Hello,
Car, 130k miles, runs strong and idles well, but started to have occasional trouble with starting only when engine is warm a few weeks ago-turns over, but won't fire. Today, stalled while driving and I was able to restart and drove home fine, but check engine light came on. Checked codes and got 2-3-2, 2-3-1, and 1-4-4. After reading forums about these codes, I'm not sure where to start. The temp gauge has sometimes fluctuated more than would seem normal, so I wonder if that could point to ECT? I'm not real bright, so looking for help. Thanks.

My 92 240, had warm starting problem which was remedied by cleaning throttle body and changing gasket and air cleaner. Weeks later, the check engine came on with
2-3-2, changed o2 sensor and disconnected battery to clear code and turn off light. Car ran erratic until it adapted to o2 sensor, check engine light returned with a 1-1-3 code which is still under diagnosis. Books says to start with first code and following codes secondary.