Toyota Tundra Flex Fuel Pump Replacement 38 Gallon Tank - Updated Part# 77020-0C170

This is a 2016 Tundra with the 38 gallon tank and Flex Fuel Pump. The symptoms were hesitation and a feeling of misfires at low rpms under load and horrible gas mileage around 10mpg. The truck started and idled fine and had no check engine lights. After replacement everything is as smooth as the day I purchased the truck and I also had 15.2mpg on the first 140 mile round trip.
Fuel Suction Tube Assembly with Pump & Gauge
Part Number: 77020-0C170
Fuel Suction Tube Set Gasket/oring
Part Number: 77169-0C010
Toyota fuel pump remover tool
www.amazon.com...

[@christopherk1436]

I have had the exact same issues not to
Long ago first was fuel pump and just less than month was rack and pinion bushings. Also the fuel pump needs software update from Toyota otherwise with new fuel pump it will happen again. I have a 2017 Toyota tundra limited. Soon will have to replace driver side cover gasket is what is next. 😢

[@tundratime941]

Everyone says "software" update but they are just resetting the fuel density readings for the Ethanol %. When the Ethanol % starts reading really high when using regular fuel it causes the extended crank issues everyone was having. This issue was not related to the extended crank problem that was common. This is just a POS designed fuel pump by Toyota.