hello guys im having a problem with my 96z ld9..

when i try to start my car it just wont .. looks like my ecu is not sending the pulse signal to the injectors dont know why soo i talked with my mek and he told me that may be my ecu needed to be reprogramed so i did 3 times actually and every time i reprogram it the car starts just fine but then when i leave the car off for like an hour or so .. same thing happen i need to re do all this again like it looses it program dont know why .. there any thing you guys might think that could be causign this or is just my ecu that is F%"·$! up already and i have to change it ..

need help asap please
thanks

I know for a fact that on a ld9 that if the crank sensor goes bad you won't get a injector pulse or fire. So you might want to look into that. Maybe it is going bad. I'd also check the connection for the injector harness for corrosion or a loose connection. Maybe follow the wires down from there to the computer.

If you don't mind me asking how do you know that the injectors aren't pulsing? Did you use injector pulse diodes w/e they are called to test to see if they were or did you just pull the rail out? Also is your fuel pump kicking on? If so it might not be building pressure or holding. So you may want to check the fuel pressure also since being a 96 it probably has a good bit of miles.