So recently my 08 ford mustang was shaking and rpm meter was revving up while I was idle in the fw got an oil change replaced the filter and replaced the gas filter. Problem stopped for a week and started up again but not after the rough idle and rpm meter rev the car would shut down and not want to turn on after a few attempts and check engine turned back on , checked the codes and got p0171, p0174, and p0193 , used some injection fuel cleaner and helped a bit but problem continues ...
Can anyone help on my rpm meter going crazy and engine turning off