Which is the secondary side of the fuel pump relay?
Which is the secondary side of the fuel pump relay?
Terminals 87 and 30 are the secondary side of the relay. Consequently, It acts as the “switch” that connects electrical current, from one terminal to the other. Use Jumper wires to supply 12v power to terminals 86 and 85. Next, use a test light on terminals 87 and 30, to see if you have power.
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 fuel pump relay controlled by the PCM?
Consequently, the fuel pump relay is usually controlled by, the ignition or powertrain control module (PCM). As a result, when switched on, the fuel pump relay; will provide current to the fuel pump, so that it may function. Therefore, any faults with it, can cause fuel pump issues.
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 ).
Where do you find the fuel pump relay?
When you shut off the ignition, it powers down the fuel pump. In most vehicles, the fuel pump relay can often be found in the fuse box in the engine bay, which is usually a long black box which contains fuel pump relay along with various other fuses and relays.
How much does it cost to replace a fuel pump relay?
You can easily find fuel pump relays online or at any automotive spare parts shop.The average replacement cost of the fuel pump relay ranges from $90 to $150, of which $20-$50 is for parts and the remaining is the labour cost.
What happens if the fuel pump relay fails?
If the fuel pump relay fails, the fuel pump will receive no power and will not operate, thus it will be silent. Always start with a visual inspection first before moving on to other tests, which will be specified below.
Where is the fuel pump in a car?
The fuel pump is located in the fuel tank, near the rear of the vehicle and can usually be heard when the engine starts. A healthy fuel pump plus a healthy fuel pump relay will often produce a variation of a low volume hum or whine which can be heard from inside the vehicle, or from the outside, near the fuel tank.
What to do if your fuel pump relay fails?
Pull out the relay and visually inspect the terminals and socket; for signs of corrosion and overheating. Because, corrosion and overheating can prevent, proper current flow and indicates problems. Clean corroded terminals and socket with, electrical contact cleaner. Next, check all fuses before any repairs.
What is the fuse box on a Chevy Blazer?
A/C Compressor Relay, Cluster Chime Module, DRL Relay Coil, Four-Wheel-Drive Indicator Lamp, DRL Module, Rear Defog Timer, Transfer Case Control Module Ignition, SIR Redundant Ignition \ RKE Ignition, fuel Sender
