Sc400 fuel problem

[Dav0]

Hey, I have a 1992 sc400 and I love it! But I’m having problems starting my car. I tried to start the car one morning and all it did was crank. I got starting fluid and it wanted to start but had trouble. So I thought it was a fuel issue. I got a new fuel pump and I tested the fuel pump control. And it still will not start. So if you would know what the issue could be plz let me know! 

[RX400h]

Have you checked for codes? That's the first thing you should do. Here's a good site for doing this in a pre-1996 vehicle that has an OB1 connector.

OBD1 Codes - Trouble Code List & Reading (GM) (mechanicbase.com)

I know it specifies GM but it also states that most codes should be the same for other vehicles.

[Dav0]

I bought an ob1 connecter and it didn’t read any codes. I bypassed the ecu fuel module and the fuel pump primmed. But the car is still cranking. But I bought an ecu fuel pump module and the fuel pump lost all power. 

[RX400h]

There's a specific sequence of checks that should be done when a vehicle doesn't start. If you want to do your own repairs, having a factory owner's manual would be very helpful. The "Car Care nut" youtube channel can be helpful, also. The commentator is a Toyota mechanic who also works on Lexus vehicles.