1996 Ford F-150 truck trouble

Hi, ok lets get to it and see if you can figure this one out, just had a new clutch put in and 1 month after that I start my truck and as soon as it warms up it starts missing and tries to die, so I replace the spark plugs and wires on it and then the next day I am driving and it just dies on me so I crank it back up and go a little further and my speedometer hand goes all the way to max speed and all the odometer lights come and it dies so I take it to a autoparts store the guy has a computer that he hooks up to it and it reads a po0174 code so we look that up and it says my truck is running (lean) whatever that means. So he says I need to clean my maf sensor and clean the throttle body out and change the fuel filter so after clening and changing all that it still does it so then he tells me it may be a vacume leak so I check all vacume hoses and replace ones that look old and it now it has changed a little now when I drive it the speedometer handle will still jump all the way over and my abs light comes on and it tries to die please help