I really hope there's an easier way than what I had to do.

Since the rear bolt holding the black cover over the FPR isn't exactly accessable (atleast I didn't have the tools to do it.) I took the bolt facing the driver side off, and used a small pry bar to aim the cover so I could access the FPR a little better. I'm a short mofo, and my Rodeo is lifted so I basically had to climb up on top of the engine to get into the FPR. It's held in by a snap ring/c-clip. My snap ring pliers wouldn't work on it, so I used a knife tip to pry the snap ring in and put a small screw driver under the snap ring to push up. then just worked it off.

Make sure you relieve the pressure first by removing the fuse for the fuel pump and letting the truck run before you attempt removal. After that, disconnect the battery! There will still be some pressure in there, so just wrap the fpr in a rag before you pull it off. If you pull it off slowly, you can relieve the pressure that way so it doesn't spray everywhere.

replace, repeat in reverse. i still have those same symptoms occasionally after replacing mine.