Matt300ZXT

iTrader: (2)

So I might be getting a sweet deal on a friend's 400 if I can figure out the problem with it. If this is a common problem and is discussed elsewhere, if someone can link me, or give me the name of the problem, I'll be more than happy to search it.

It's a 92 400, had the motor swapped with a lower mileage JDM engine. Ran fine until the week before my friend got it. Since it's been acting up, the alternator, distributor caps, rotor buttons, plugs, wires, and battery have been replaced.

He said what it's doing is it starts up perfect and runs until the engine warms up, then he said you can hear the fuel pump get louder, and quieter, then it spark knocks and cuts off, or if you cut it off. Also says it won't crank until the car cools back off. He said he has a friend that's pretty good with the Toyotas and Lexus cars and did an ECU bypass on it, and it still acts funny, so he thinks pretty much it is the fuel pressure regulator.

If anyone can shed some light I'll be more than happy to take the help, or ask some ?s to help get some details ironed out.