Fuel Pump On Engine Off

[Shawn0331]

87 5.7L TBI.

After I shut the engine off, a few minutes later the fuel pump kicks in for a while. Normal?

[VileZambonie]

On heavy duty models, a fuel module will override the ECM two second timer and the fuel pump will run for twenty seconds and then shut OFF if the vehicle is not started. This circuit corrects a hot restart (vapor lock) during a high ambient temperature condition. Refer to COMPONENT LOCATIONS/UNDERHOOD BLOCK DIAGRAM for under hood general location.

[Shawn0331]

Well, I know it's been quite a while since I posted this, but after replacing my oil pressure switch (which was never there...PO must have removed it), I looked at the fuel pump relay and saw this.

AutoZone has a cheap replacement. Hoping this solves the problem. I believe the fuel pump running has been what is draining my battery dead when I don't drive it for long periods of time (3-4 days or longer).

[j20m715]

On heavy duty models, a fuel module will override the ECM two second timer and the fuel pump will run for twenty seconds and then shut OFF if the vehicle is not started. This circuit corrects a hot restart (vapor lock) during a high ambient temperature condition. Refer to COMPONENT LOCATIONS/UNDERHOOD BLOCK DIAGRAM for under hood general location.

 If this module is BAD what conditions will it cause ?

 What if module is removed ?