Cars runs fine, it will never stall while driving, but if ignition is turn off, car won't restat, it will crank, but won't run, computer is been replaced twice, and crank sensor been replaced, injectors relays test good, but when the car cranks it has not injector pulse, even if car is cold or warm, after starting the car even for 20 seconds and turn off teh ignition and will not restart,
I have the same problem with my Jeep, I can't afford to spend a lot of money on a crank sensor and still have the same problem. Have you resolved your problem? I have no clue what to have checked out.
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Not unusual for fuel pumps to begin to fail once they are heated up from running. First thing in the morning pump is cool, then as you drive, it heats up and begins to lose pressure. After sitting a 1/2hr-1hr, it may start again and run fine for a short time and start to act up again. Had similar problem and found good fuel pressure when tank and pump cool, but lost pressure once vehicle driven a distance and pump heated up. The hotter the weather, the shorter the distance I could drive. If you can somehow set it up to have fuel pressure checked when it starts to act up, that would certainly help confirm if fuel pressure is the culprit.
I had a similar problem the car would start fine then when driving it would just stop - if i waited long enough it would restart just fine and the same thing would happen. I replaced the crank sensor and the cars been running fine ever since. Even though the sensor ohmed good when cool???