Intermittent crank no start 08 tundra

Have a 08 tundra changed fuel pump mechanic said they couldn't figure out why it has intermittent starting issues so they have up need help changed fuses checked them all messed with the fuel control module when it doesn't start there's no fuel going to the rail . Suggestions?

 

Signal/Voltages (wiring) all good at the module and pump?

 

Took apart fuel control module doesn't looked fried was changed about 5 years ago. Could it be the connections aren't connected good on the fuel pump because I just had that changed ? Thought fuel pump was the issue but it still has no start randomly

 

I'm only getting 12 volts on one side of the fuel pump module with key on the red and blue wires I don't have nothing on my multimeter?

 

One thing I noticed it started with a boost and second time I had it towed didn't start had it out on a flat bed dropped it off and started up could the connections be loose or bad on the fuel pump or control module ?

 

Let me see if I can find wiring

 

https://www.tundras.com/threads/ultimate-wiring-diagrams-collection.81448/

IMO, take some time and check/verify wiring to the module and pump itself.

 

Ok thanks will do maybe they broke or didn't connect the plug to the fuel pump since that was. Changed going to buy a new fuel control module anyways

 

Still no start messed with wire on fuel control module and messed with some relays bought new ones turn the key on I could hear a click under the hood and it ran went of this am no click and it didn't start any ideas ?

 

Have you run down your battery trying to work on it?

 

No battery is good messed with relays unhooked the battery and it started for a sec then died something isn't letting it send fuel it's frustrating

 

Put a new fuel pump relay and it ran fine all day yesterday tryed starting it this am to move my boat and just crank no start again .

 

Next question I'm taking the fuelines off and the mechanic that did the fuel pump has shit ton of grease on the fuel line connectors even in the holes

 

Should this been done like thst or is it a risk for fuel line blocking?

 

I dropped the tank found the yellow wire to be chafing through the plastic coating is this the culprit?

 

If there is no continuity from one end to the other, it is possible.