My car wont start, lack of gasoline, I realized the fuel pump is not working I checked the terminal connectors and then have no juice. Now my fuse box is missing the diagram of which fuse does what, I checked them all and they all have juice but the three top one on the right side, could it be the fuel pump relay and if so where is it located?
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It is very important to look at the four pin connector that plugs onto fuel tank sending unit the hot wire that runs the pump gets loose and burn the connector making intermittent connection they make a replacement plug for this problem also check the connections on the inside i have those fail once.
I'm guessing from your shortstatement that you are not getting fuel. Your '93 would have either the 2.8 or the 4.3 v6. If your not getting fuel, check the fuel pump relay, look for a blown fuse. Disconnect the oil pressure sensor and jump across the connector terminals and try to start the engine. If the oil pressure sensor is bad, it will shut the fuel pump off.
The relay has power on 2 terminals not just one. the relay uses a smaller current to control a larger current...Apply 12 volts to the grey wire aka battery positive and see if the fuel pump will run. if it does ,Check all fuses. and check operation of the fuel ballance module.
1. make sure you really have no fuel delivery. open a line convenient for you as in cold start injector or fuel filter, disconnect ignition coil lead and crank away a bit to make sure you're not getting fuel. 2. I assume you're getting spark. 3. check efi fuse in main relay box passenger side inside right fender. if good check that you have juice at the Co relay hidden in the passenger kick plate. its the white-red terminalwhich delivers the current. the Circuit opening relay is really the main enchilada for getting the pump up and adam. 4. still no go. you have to address the Co relay itself. test terminals with ohm tester. also you can jump wire the Bp fP terminals in the diagnostic connector on the side of the main relay and see if the pump goes. 5. and lastly it might be the pump itself
FUEL FILTER REPLACEMENT 1.Reduce the internal pressure of the fuel lines and hoses by completing the following operations.
After removing the rear seat cushion, disconnect the fuel pump harness.
Start the engine. Allow it to stop by itself, then turn the ignition switch OFF.
Disconnect the battery negative (-) terminal.
Connect the fuel pump harness connector.2.Remove the eye bolts while holding the fuel filter nuts securely.Cover the fuel filter with a shop towel to avoid residual gasoline from splashing.3.Remove the fuel filter mounting bolts, then remove the fuel filter from the fuel filter clamp.4.After replacing the fuel filter, check for fuel leaks.
FUEL FILTER REPLACEMENT 1.Reduce the internal pressure of the fuel pipes and hoses by completing the following operations.
(1) Disconnect the fuel pump harness after removing the rear seat cushion.
(2) Start the engine and after it stalls, turn the ignition switch OFF.
(3) Disconnect the battery negative (-) terminal.
(4) Connect the fuel pump harness connector
2.Remove the bolt connecting the fuel line with the fuel filter.Cover with a shop towel to avoid gasoline from splashing.3.Remove the fuel filter mounting bolt, then remove the fuel filter from the fuel filter clamp.4.After replacing the fuel filter, check for fuel leaks.