today my car started up fine but down the road it started to choke a little but then it kept on going then i stopped at a redlight and the car just died and wont start timing belt is fine theres spark but idk about the fuel any suggestions to something else going wrong? it would crank fine but wont turn over. its a 93 manual sc300

 

Dead fuel pump?

 

was the radio and instrument panel flickering while it was struggling?

 

no it just idled rough then died but this morning it started up fine then when i went to restart it it wouldnt start again..... but what exactly does the fuel pump ecu do?

 

If it seems to start up fine early in the morning, starts up fine late in the evening. Mainly has trouble when it's extremely hot outside. On my honda, it was a main relay that connects to the fuel pump. The high heat inside the cabin seems to mess up the solder points in the electrical parts making it lose resistance... If your car sits out, suggest using sun shields or crack the window to keep the cabin cool...