My 1986.5 NA supra wont fire across any of the cylinders. i have replaced the ECU, the Coil and Ignitor, the fuel pump, Head Gasket, and the spark plugs. plus a few more things i'm sure. I had the Car running and then it just died while driving. then i let it sit for a little while and it started back. it did the exact same thing again except this time it wont start back any idea what the problem could be???

Are you getting any engine codes?? I had the same problem with my 90' turbo last summer.. Sometiumes ide drive for 5 miles.. sometimes it'd drive a mile, sometimes it wouldnt start, I was getting an Ignition code.. After replacin a few parts, I found a burnt wire in the harness behind the engine.. I think it got too close to the egr cooler, or something back there..

Just a suggestion Good luck