Fuel Pump Problem on 90 S10 Blazer
Hi there, i have a guide that will help you troubleshoot this device. its a step by step situation that will help you find the issue with your fuel pump functions.
Go to the back of your car and take off the fuel filler cap. Ask an
assistant to turn the ignition on but do not start the engine. Listen
closely for a brief, vibratory sound coming from the tank. If you
cannot hear the sound, go to the next step.
Check the fuel pump circuit fuse. It should be in the fuse panel under
the dashboard or in the engine compartment Verify that it is in good
condition and the contacts are free from corrosion. If necessary,
replace it and test the pump again.
Inspect fuel lines, hoses and connectors. Make sure hoses are not torn,
bent or obstructed. Verify there are no gas leaks.
Locate the fuel pump relay. You might find it in the engine
compartment, at the driver or passenger side and close to the
windshield or at the front of the engine as part of a cluster of
relays. Another common place is under the dashboard.
Remove the fuel pump relay. Ask an assistant to turn the ignition on
but do not start the engine. Using a test light, check for incoming
voltage at the relay connector. If there is no voltage, check for an
open or short at the wire between the relay and the fuse panel.
Jump the relay connector to apply battery voltage to the fuel pump.
After the jumper wire is connected, ask an assistant to turn on the
ignition while you listen for fuel pump operation as described in step
1. If the fuel pump works now, replace the relay and test again.
Another alternative is to test the fuel pump relay for proper
Locate the fuel pump connector at the back of the car and check for
incoming voltage with a test light. While you check for voltage, ask an
assistant to turn on the ignition but do not start the engine. If there
is no voltage, check for an open or short at the wire between the relay
and the fuel pump.
Check the power and ground connections at the pump and make sure they are good and free of corrosion.
Test the fuel pump. Apply direct voltage to the fuel pump. If you
cannot easily remove the fuel pump through the trunk of your vehicle,
you might want to take a fully charge car battery to the back of the
car. Raise the vehicle and secure it firmly on jack stands. Unplug the
fuel connector and use a couple of jumper wires to connect the battery
to the fuel pump. If the pump does not work, replace it.
Please rate and god bless:)
Apr 01, 2009 |
1993 Chevrolet K1500