Fuel system questions

rizzo20

Original poster
Member
Can't seem to find the info I'm looking for. I understand my '08 SLE has a "return-less" fuel line system. Why are there two fuel lines leading to the tank? I don't understand how the system works I guess.

Also, one of the lines connects at the top of the throttle body and leads to some sort of sensor bolted to the driver side of the engine then leads back to the fuel tank. I'm thinking it may be the pressure regulator but I thought the return-less system had the regulator in the tank. TIA!
 

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