I plan on replacing the two upstream sensors on my truck tomorrow evening, ive got the sensors and a socket for them. The truck is a 98 150 4x4 with a 5.4 engine. I know I should drive the truck to get it warm first, so they come out easier, but any other advice or steps I need to make sure and do when i replace them, thanks for any help

 

https://www.f150online.com/forums/ar...r-install.html

Would this help you?

 

yup, that will help, that appears to be the exact same setup as mine, thanks