Where is the fuse & relay switch for the fuel pump located.
I was driving in the reserve tank,put in $20 in fuel drove about 3miles and the car died on me but it wasn't shooting for gas before it died,thank goodness I wasn't on the highway, tried starting the car, it swung but wouldn,t start,with info... I turn the key not to start the ingine but to listen for the fuel pump, I heard nothing.So I suspect the pump,before I change it I want to trouble shoot properly the fuse & relay,location? May I add the car seem to be consuming fuel quickly.
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Re: Where is the fuse & relay switch for the fuel...
Locate the fuse box. Facing the engine, the box is located on the the right fender. The fuel pump fuse should be labeled, The fuel pump relay is Incorporated in the FI relay located under right center of dash. It is a metal relay usually bolted to the floor near the ecm. Good luck and hope this helps but first replace the the fuel filter since it's the easiest thing to do.
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Power For Engine Control Relay ( fuel pump) Comes From Fuse Link 2 (20 Amp) Behind Battery--Engine Control Relay Is Located Below Right Side Of Dash--At Kick Panel--Output To Fuel Pump Wire Color Is BLACK/BLUE
The primary (coils) side of the fuel pump relay is powered by the CRANK fuse (10 Amp) located in the instrument panel fuse block. This fuse is hot ONLY when the ignition switch is in the CRANK position. The secondary (contact) side of the relay is powered by the ECM-B fuse (20 Amp) which is hot at all times. This fuse is located in the engine compartment fuse block. The electric fuel pump in the tank only operates during engine cranking.
You'll need to check for power to the fuel pump. There are two connectors on the passanger side to the right of the fuel tank. One of those is the connector for the fuel pump module. There will be a large gray wire in that connector. That is power to the pump. there will be a larger black wire also. That is the pump ground.
If there is power and the ground is good try smacking the bottom of the tank while somebody cranks the engine over (vehicle in park foot on brake and vehicle properly supported if jacked up). If it starts the pump will need to be replaced.
Replace the fuel filter. That should fix the problem. You can follow the fuel line back to the fuel tank to find it. It is usually in the middle of the vehicle near the edge of the vehicle, like right under the passengers or drivers door.
Fuel Pump relay switch is in the main box usually located on the drivers side Fender in a black box.
According to the owner's manual in the power distribution box in the engine
compartment (Ford recommends disconnecting your battery)
Relay # 5 is the fuel pump relay , and also in the PD BOX is a 20 amp mini-fuse
for the fuel pump relay + RAP module in location # 9
( P.S. - don't forget your fuel pump inertia switch , in the right front passenger area ,
by the right front kick panel )Sometimes this gets kicked by passenger or if the car is bummed hard it could set this item to shut down fuel system. Best of Luck
relays are normally in the fuse panel on the left side of dash by knee.
Fuses and Circuit Breakers
Location and Values NOTE: The headlamp switch (11654) has an integral 20-amp circuit breaker.
The combination instrument panel fuse and circuit breaker panel contains most of the fuses and circuit breakers used in the system.
The fuses and circuit breakers are color-coded by amp rating.
The locations and values of the fuses and circuit breakers not contained in the panels are shown in the following chart.
Circuit Protection and Rating
Headlamps and High Beam Indicator
20 Amp. CB
Integral with Lighting Switch
Heated Back Window
16 GA Fuse Link
Power Windows, Power Seat, Power Door Locks
20 Amp. CB
Starter Motor Relay
Engine Compartment Lamp
25 Amp. CB
Lower Instrument Panel-Reinforcement
Hello mwisterman11: I can help with your answer. GM does not use a inertia switch like Ford does. The fuel pump is controlled by a 20 amp fuel pump fuse, a fuel pump relay and the PCM. Look under the hood for the fuse box. Locate the fuse marked f/p-injr.This will be a yellow 20 amp.fuse. If it is ok locate the fuel pump relay in the same panel. Other then these two the fuel pump is controlled by the computer. If you crack a fuel line and turn the key on you should see fuel movement. Be sure to put a rag around the line to soak up the fuel. This will be a fire hazard.
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Try changing the fuel filter first we always change them when servicing the fuel pump anyway,its easy and cheap,if that doesnt solve the problem you will have to perform an amperage draw test on the fuel pump to insure your not replacing a good pump. Check the fuel pump relay and inertia switch and wiring also.Although possible its unlikley the fuel pump would blow a fuse consistantly without displaying any driveability problems.There may also be another component running off the fuel pump fuse have your mechanic pull a wiring diagram to find out. Good hunting keep me informed
The ECM-B fuse is a 20 amp fuse, and you should NEVER put a larger fuse in to try to overcome any problem. The oil pressure switch is a secondary concern; there is an idiot light or oil pressure guage in the dash to alert you to oil pressure problems. Under heavy load, such as towing, your engine requires more fuel, and if your fuel pump is going/has gone bad, it cannot supply the demand. The problem is almost certainly a fuel pump wire harness short, caused by a dying fuel pump. I have both had this problem myself, and repaired it on three other vehicles. On my vehicle, the wire harness had welded itself together when the fuel pump locked up, and the wire harness caught on fire. The fuel pump is in the gas tank (of course my tank was full), and the tank has to be dropped to access it. The wire harness is modular, with plugs at both ends, and can be bought from the Chevrolet or GMC dealer. If you put an incorrectly-rated fuse anywhere in your vehicle's electrical system, the WORST place to do it is where you have--the fuel pump circuit. Fuses blow for a reason, and the manufacturer's engineers properly size the fuses for the application at hand. Please don't do that again. This can be a very dangerous problem and repair, and no, it is not cheap. Do not attempt to operate this vehicle until you have had the problem properly corrected. Good luck.