My '90 Accord stalls when my gas gauge hits 1/2 tank or less (especially if I am driving downhill or hit the brakes quickly). I'm going to change out the electric fuel pump harness and believe I may just have a bad piece of fuel tubing between the harness and the fuel pump. I may need to change the fuel level sending unit and there are two types: Denso and NS. How do I tell which type I need for my Accord?