someone said BOTH fuel pumps must work for the car to run and I wanted to correct this for general info. I had BOTH fuel pumps fail after just testing and having both of them working. Drove me nuts BC it seemed so unlikely. The car would run if either of the pumps were working. It totally threw me because I could not imagine both failing in a short time span but I finally replaced one pump, and while the other was still bad the car ran fine and I ordered the second pump and installed it. Will run on one pump. No noticeable performance change.