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No, It can not do that, Any of the solenoids in the truck will prevent it from cranking. I would suggest checking the fuel pump. its simple to check, Have someone turn the ignition key on until the dash lights light up. (do not crank the engine). When they do that, you need to get your ear as close as possible to the fuel tank. You are listening for a whineing sound. It will whine for about 2 seconds only, this is normal and means the fuel pump is working. If you hear nothing.... the pump has failed.
-Back fire could cause from fuel contaminate (with water.) -Clog air filter.
Let's find out why you truck can't stay on...? looks like your car has a Fuel pump inertia switch. If so. Reset it first. After reset it still can't stay on then: 1. Check the fuel pump relay.
Q: What is fuel pump inertia switch and where is it? A: It's a safety switch in case car roll over it's automatic cut off power to fuel pump. And toyota usually locate inside of the left panel. (Left side of your left foot when you drive)
The 2000 Discovery with code p1590 is not neutral safety switch, this code 1590 is for the ABS rough road signal circuit malfunction .this is can be caused by a bad wire or sensor problem. The ABS is the anti lock brake system and will not cause engine to die out.
the problem you list is more of a signal loss for crank sensor or other sensor but most of the time a sensor fault that cut engine should set a code no matter how fast or often, so i would have to say it must be a fuel problem, the fuel pump stops pumping at times causing loss of power and then picks back up.
What scan tool are you using that told you this was a neutral switch? is this a small code reader? I would let the dealer scan it with a real scan tool and see what is going on, when you say it dies while driving are you saying the engine shuts off and you need to restart it or is it a loss of power at which you can not give it gas or engine revs up but wont go?
Check the fuse block. Use a test light and don't rely on just looking at fuses. But if the main ignition control unit went bad, it will also cut the power to the fuel pump relay. Autozone will check the main control unit.
where is the fuel pump? Any air leeks up streem from the fuelpump? even a small one and all it pumps is air. What condition is the in tank screen? if dirty replace it. Three second shut off time is for safety the interlocking device on older cars was theoil pressure switch on newer onesthe computer. (do you have gas in the tank?:))