1991 geo tracker doesn't usually start in colder weather.

[fixkick]

The pump bottom sock filter must match the pump.
sorry for your trouble.
denso is a good brand pump (Japan company) many cars from JAPan have Denso, (nippon denso) (like the delco japan, they are)

hi fixkick...(I've been out of town for the past week), but when I cleaned up and checked the old pump before I left it was getting power to it, but it had no life to it and didn't buzz. So I mail-ordered a new 950-0125 Denso fuel pump from Amazon for a good price. Unfortunately, the fuel pump filter was missing from the package, and the fuel pump itself is much smaller than the one I pulled from the tank, so I don't know if I can get it to fit properly. The rubber bottom part that snaps on the assembly from the old pump doesn't seem to fit, so I might have to return it and splurge and buy locally. Are the new pumps smaller these days? thanks