How to test the Ford fuel pump relay?
Go to: TEST 2. CASE 2: Your Multimeter DID NOT show battery power. Recheck all of your multimeter connections and repeat the test one more time.
What happens when the fuel pump relay goes bad?
If the fuel pump relay suddenly fails, it will light up the check engine light and store a trouble code on the fuel pressure. The fuel pump relay going bad can affect the fuel pump’s power and affect fuel delivery to the engine.
Where is the fuel pump inertia switch located?
On the majority of the vehicles covered by this tutorial, the inertia switch is located below the right side of the instrument panel, behind the trim panel. Resetting the fuel pump inertia switch simply involves pushing down on the button located on top of the inertia switch till it bottoms out.
Where is the fuel pump fuse box located?
The engine’s or the dashboard fuse box is usually a long black box containing a fuel pump relay and various other fuses and relays. For different vehicles, the fuel pump relays can be located in different places.
How many wires does a Ford fuel pump relay have?
The Ford fuel pump relay has 4 wires that connect to it. Each wire has a specific job to do and these are their circuit descriptions: IMPORTANT: Your specific Ford vehicle may not have the exact same colors listed below. This is no big deal, since the circuit descriptions are the same.
Is the Ford fuel pump relay a green color?
If your fuel injected Ford pickup, van, or car still has the Ford relay, this bad boy will be a green color (like the one in the image viewer). If it has already been replaced with an after-market one, this relay won’t be green, but will have a gray body.
What are the symptoms of a fuel pump relay problem?
1. Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall.
What does multimeter mean for fuel pump relay?
CASE 1: Your multimeter showed battery power. This tells you that the low current circuit of the fuel pump relay is getting juice and this is a good thing. The next step is to verify that the fuel pump relay’s high current circuit is being fed with battery power too.
The following tutorial may be of help: How To Test The Fuel Pump (Ford 4.9L, 5.0L, 5.8L) (at: troubleshootmyvehicle.com ). For your cross reference information: You can find this tutorial in Spanish here: Cómo Probar El Relé De La Bomba De Gasolina (Relé Verde) (at: autotecnico-online.com ). What Tools Do I Need To Test The Relay?
What happens when a fuel pump relay goes bad?
If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall. A faulty relay may allow the vehicle to be restarted a short while later, while a completely failed relay will not.
Why does my Ford pickup have a green relay?
You’ll be able to find out if the fuel pump relay, or the fuel pump Inertia Switch, or the fuel pump is the cause of the No Start Condition on your Ford car or pickup. If your fuel injected Ford pickup, van, or car still has the Ford relay, this bad boy will be a green color (like the one in the image viewer).
What does a green fuel pump relay look like?
If it has already been replaced with an after-market one, this relay won’t be green, but will have a gray body. The following tutorial may be of help: How To Test The Fuel Pump (Ford 4.9L, 5.0L, 5.8L) (at: troubleshootmyvehicle.com ).
What’s the best rating for a fuel pump relay?
Filter your results by entering your Year, Make, Model to ensure you find the parts that fit your vehicle. 5 out of 5 stars. Read reviews for MasterPro Ignition 3 Terminal Multi-Purpose Relay
What happens when the fuel pump relay is off?
When the fuel pump relay is off (not activating the fuel pump), the high current circuit is ‘open’. In it’s ‘open’ state current does not get sent to the fuel pump. The low current circuit is the control circuit that ‘closes’ or ‘opens’ the high current circuit.
You’ll be able to find out if the fuel pump relay, or the fuel pump Inertia Switch, or the fuel pump is the cause of the No Start Condition on your Ford car or pickup. If your fuel injected Ford pickup, van, or car still has the Ford relay, this bad boy will be a green color (like the one in the image viewer).
Where is the fuel pump relay located on a 1987 Chevy Silverado?
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