My 89 Acura won't start after warmed up what should I do

I am not sure what you mean? What will not even start up?-----------------------------------------------------------------------------------
2012 ELM327

If I crank the motor while it is st ??????? Probably ignition module . When it shuts off check for spark .

If the resistor bypass doesn't solve it, another remedy could be a plug-in type engine block heater- I mean plug into household current. It keeps the engine coolant warm in the block. Every other car here in Montana uses one-works great for those below zero nights. When the wife pulls into work, just run an extension line and keep the car plugged in till time to go. Other than that, IDK, sounds like you've covered it pretty well as far as solutions.

A mechanic would check for voltage at the coil and the ignition module next.
Any trouble codes stored in the ECM ?

my car has the same exact problem!! i have 2 pop the clutch 2 get it started when it is hot. Mine starts great when its cold or hasn't ran 4 awhile but when we are driving around for more than about 20 min in it when we stop it doesn't start at all. it wont even turn over. so i have 2 have my husband push it while i pop the clutch & then it starts & runs fine till the next time we turn it off. its not a battery problem as we'v replaced the battery, & the starter & the alternater are fine as we'v had them tested. hopefully someone that knows & has fixed this problem can answer this mystery problem!! hopefully some1 can :D

You'll have to figure out if it is a fuel or ignition problem.
Is the check engine light on ? Have you checked for trouble codes ?
It could be a relay, the ignition module, coil, fuel pump, or a list of other things.

Have you checked Google I found this hopefully it's not your timing or it may be flooded but doubtful have you tried spraying starting fluid into the intake while cranking it

Hello...the first thing that comes to my mind is the timing belt..Without that...she won't run with all the electrical in the world..I just hope that there wasn't any valve damage....Start there....Let me know...I hope this was helpful....PEACE...

Is their any service engine lights coming on?

Itis trying to tell you you shouldn't be driving it till it's warm. I won't move my car till at least 1 minute after starting regardless of temp.