fuel pump on 2001 Pontiac Aztek

signs of fuel pump malfunction

Asked by for the 2001 Pontiac Aztek
Low fuel pressure will cause fuel starvation under load on acceleration resulting in a loss of power, (lean running condition)Too much fuel pressure is caused by a restricted fuel return line or such. As Dave said get pressure verified using a fuel pressure gauge to verify pressure and volume is OK.
1 more answer
Have a fuel pressure test performed to determine if your pump is functioning appropriately.