94 Lexus LS 400 rpg gauge not working loses acceleration while driving

sounds like your fuel pump is going i'd get it looked at right away..

Y r u asking us u cheap skate.
Go 2 a lexus dealer & put yr hand in yr pocket 4 once.

l believe your (not working) rpg gauge is tied into your acceleration problem because of pressure loss. The line coming off the block is pro bally the problem. You might be able to hear it if you pop your hood and scurry around,to the front of your car, an listen for it , right after you shut the engine off!