First of all I’m a new member and have been lurking in the shadows for years and have learned a lot on this forum so to that thank you.l have a 94 4Runner with the 3.0 4wd auto when the trouble started it would shut off when I came to a complete stop , cycle the ignition and would fire back up and run great for several weeks and out of the blue shut off. Fast forward to now it will start and run fine for about 5 minutes and shut off “ no spark” let it sit for about 20 to 30 minutes fires back up for about another 5 minutes and shuts off. No CEL I have 12 volts to the coil removed the coil wire from the distributor turn it over no fire. So far I have replaced the temp sensor ,Ecu igniter,coil, mass air sensor and it stills does the same thing. Most posts I’ve read was either completely no spark or will start then immediately die and I’ve tested or replace parts that fixed their problem to no avail is there something I’m over looking. I would appreciate any kind of help or direction to get it back on the road.

 

Try checking the places that are supposed to have power right after it dies, some one may need to be cranking it over when you are checking. It would also be a huge help if you had a factory service manual as that will have some step by step troubleshooting guide in it.
I had a similar thing on camaro once, there was a pickup coil in the distributor that would go open circuit as soon as it got warm enough, you let it cool off and it would start right up.