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No, it is more likely the fuel pump relay is at fault.
You can check the pump itself by locating the lug on the firewall that connects to battery + directly. Beneath it is a short pigtail with a single wire and a connector that has no destination. That wire if connected to that lug should power up the fuel pump.
One side of the fuel pump relay coil is always "hot".the 2 second priming sequence is the engine computer applying a ground connection to the same side of the realy coil as the oil pressure switch is on to close the contacts. Otherwise the contacts close when the oil pressure switch sees oil pressure completing the circuit to ground.
A quick check, is to swap it for another relay of the same type under thood- usually the horn relay is the same type. Swap it and see if it works- if it does, jsut get a new relay.
Do this test first. With the drivers door opened in a nice quite area turn the ignition key to the ON position without starting the engine. You should hear the fuel pump operating for 5 seconds which is priming fuel to the engine. If not heard the engines oil pressure sensor is at fault. The third wire from this sensor links to the fuel pump to prime. When the engine reaches normal operation oil pressure range the computer shuts off that circuit and turns on the fuel pump relay for the pump to run. That relay stays on until you shut the engine off
You need a new fuel pump relay. The engine fires up and runs off the oil pressure switch untill the oil pressure PSI is reached at normal operating conditions. When the oil pressure reaches its operating PSI the PCM or engines computer will shut off that circuit and turns on the fuel pump relay to run the fuel pump untill you shut the engine off
Did it run fine prior to replacing the alt and battery? Check over where you have been working,sometimes things get bumped/disconnected. Fuel pump shut-off switch is in one of the kick panels near the inside of the doors. Reach up over the top of the kick panel. The pump relay are near the battery. What happens on this model too,is the heater leaks on the computer,which is under the heater core.The coolant/water shorts it out.
You are looking for the constant control relay module- ( CCRM ) see below. The pump will be located inside the fuel tank.Most of the time , its the pump and not the relay but, it wouldn't hurt to check the relay out. Teh relay is housed in the CCRM. Its located behind the engine coolant reservoir.
yor ignition switch is bad (not key) its located on the column about 1/2 way down on top or your fuel pump relay is bad i have had new ones thet did this also check the connection at the relay sometimes a little die-electric grease does wonders good luck