Acceleration problem attn q45 tech, elwesso

[bigreese]

My 92q (200,000 ) has began to have acceleration problems. First of all i have noticed that the idle is low, about 550 rpm. When the car cranked for the first in the morning, it will crank and the rpms will go to zero. On the next try it will crank fine and idle at 550. When it cool in the morning the car wil accerlerate fairly well. In the evening or when warm, it seems like the car will barely accerlerate and i have to feather the pedal to get up speed. Once i get up to about 60mph the car runs fine. But if let up off the gas the car losses compresion again and has to buils up speed. At above 60mph when press the gas the car gets to about 70 and begans to surge like it is not getting enough gas or the transmission wont shift. I searched the posts earlier and thought it was the fuel pump, but now i am not sure. Could this be a throttle body sensor or throttle body problem? Please help

[elwesso]

If you hear a humming from the rear of the car at idle, then its your fuel pump.