Oldsmobile/Buick Repair: feels like my car is running out of gas and sputters, olds cutlass supreme, throttle position sensor

Question
hi my car (1991 olds cutlass supreme) has been acting like its running out of gas. when im at a stop light and then go again it sputters and feels like its running out of gas....when i get going faster it does not do it. also when its cold outside it doesnt do it as bad. but when it starts to warm up outside or the car warms up it does it bad. i tried to put some fule cleaner in my gas but that did not help either. what would you suggest next? when it gets hot outside it gets really bad i can have the gas peddle floored and my car will only go about 10 MPH its horrible!!!! almost like i have a clutch and the clutch went out....but its an automatic!
thanks for your help

Answer
Hello Krissy,
I would for sure be wondering about fuel supply. Dirty filter or some other problem in the fuel system.
I would check the pressure.
Assuming the pressure is good at the fuel rail, then I would check...didn't say replace, but check the throttle position sensor, and the temp sensor. read this forum.

http://www.chevytalk.org/threads/showthreaded.php?Cat=0&Number=1366279

Van