How to test a fuel pump relay on a 94 Ford Ranger?

Luckily, you can test the fuel pump relay in a 1994 Ford Ranger without buying any additional parts, relays or special tools. Almost all novice mechanics can test the fuel pump relay in a few minutes to determine whether there’s a need for further diagnosis, or whether the fuel pump relay is the source of the mechanical troubles.

Where is the fuel pump relay located on my truck?

The fuel pump relay is under the hood near the firewall in the center here is a guide to help you test it and the location of the fuel pump relay featured in the diagrams below. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed. helpful? Where is the fuel pump relay located on my truck? helpful?

Where is the fuse panel on a Ford Ranger?

The fuse panel is located behind the cover on the left side of the instrument panel. How to check the fuses? How to replace a blown fuse? Why do car fuses blow?

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).

Where is the relay on a Ford Ranger?

Locate the fuse and relay box in the engine compartment. It is located near the firewall on the driver’s side of the engine compartment. Pull the cover from the relay and fuse box.

How to bypass bad fuel pump relay on Ford Ranger?

HOW TO BYPASS BAD FUEL PUMP RELAY ON FORD RANGER, EXPLORER, MOUNTAINEER!!! BAD FUEL PUMP RELAY!!! – YouTube

Where are the fuses on a Ford Ranger?

Fuse box diagram (fuse layout), location and assignment of fuses and relays Ford Ranger (1993, 1994, 1995, 1996, 1997). Fuses and circuit breakers protect your vehicle’s electrical system from overloading. If electrical parts in your vehicle are not working, the system may have been overloaded and blown a fuse or tripped a circuit breaker.

When does the fuel pump relay turn on?

When ignition switch is turned to “START” position. EEC module operates fuel pump relay to provide fuel for starting engine while cranking. If vehicle is involved in a collision, inertia switch will stop fuel flow. Engine will run until residual fuel is exhausted.

How does fuel pump relay work in EEC module?

Power is provided to both fuel pump relay and timing device in EEC module. Fuel pump runs through contacts of fuel pump relay. If ignition is not turned on within one second, timing device in EEC module will create an open ground circuit. Opening ground circuit of fuel pump relay de-energizes fuel pump.

How does the EEC relay in a fuel pump work?

Relay Basics: How The EEC Power Relay Works. This is the circuit that delivers the voltage (and thus current) to the Fuel Injection Computer (EEC Electronic Control Assembly), fuel injectors, fuel pump relay, etc. When the relay is not activated, this circuit is ‘open’, and as such, does not send any power to anything.

What are the numbers on the fuel pump relay?

A high current circuit. This circuit can be identified by the wires labeled with the numbers 3 and 4. This is the circuit that delivers the voltage (and thus current) to the fuel injection computer (EEC Electronic Control Assembly), fuel injectors, fuel pump relay, etc.

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.

When is the fuel pump ignition switch activated?

Fuel pump relay and ignition is activated by ECA when the ignition switch is in the “ON” or “CRANK” positions. When ignition is turned on, the relay is activated to supply initial line pressure to system. Please use 2CarPros anytime, we are here to help.

How do you replace a fuel pump relay?

Remove the original fuel pump relay from the fifth slow from the right. Remove the replacement relay from the third slot from the right and insert it into original position in the fifth slot. Bring the original fuel pump relay to an auto part store and buy a replacement.

Where is the fuel pump relay located on a Honda Accord?

It is located near the firewall on the driver’s side of the engine compartment. Pull the cover from the relay and fuse box. Pull out the fuel pump relay with needle-nose pliers. The relay is located in the middle row with 13 fuses in the row. The fuel pump relay is the third relay from the right. Pull the relay that is fifth from the right.

How does the fuel pump relay work in a Ford?

The fuel injection computer then grounds circuit 1. This activates the fuel pump relay to pass current from circuit 4 to circuit 3. Circuit 3 is the one that runs to the fuel pump (via the Inertia Switch) and delivers the voltage/current it needs to activate.

When does a fuel pump relay go bad?

If you’re lucky and your car restarts after a short while, your fuel pump relay is faulty, which requires immediate inspection. The fuel relay may be the culprit if the car suddenly seems to lose power while driving, or slowing down with no apparent reason.

How to test the Ford fuel pump relay?

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 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.

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 kind of fuel pump does a 1999 Ford Ranger use?

In this video we have a 1999 Ford Ranger 3.0 Flex Fuel. It was towed in with the problem of no cranking. Once it was checked for codes we checked fuel, fire and compression. Given the age the fuel was checked first. The easiest way to start is by checking the fuel pressure.

What should fuel pressure be on Ford Ranger?

The easiest way to start is by checking the fuel pressure. The fuel pressure was about 5-6 psi so we knew the pump was getting power, just not producing the correct amount of pressure to allow the engine to run. Loading…

How to test the fuel pump in a 1990 Ford?

Part 2 -How to Test the Fuel Pump (1990-1997 2.3L Ford). Connecting a fuel pressure gauge, to test fuel pressure, is possible due to the Schrader valve on the fuel injector rail.

Do you need a fuel pump for a Ford Ranger?

Driving a compact pick-up like your Ford Ranger provides you with multiple advantages, including the drivability of a car with the convenience of a truck bed. A sudden dip in performance and fuel economy is a sign you have problems with the fuel pump. Fortunately, purchasing a replacement Ford Ranger fuel pump is easy when you rely on AutoZone.

Part 2 -How to Test the Fuel Pump (1990-1997 2.3L Ford). Connecting a fuel pressure gauge, to test fuel pressure, is possible due to the Schrader valve on the fuel injector rail.

Can you test the fuel pump on a Ford Explorer?

Thankfully, Ford has made it super easy to test the fuel pump on your 4.0L Explorer (4.0L Ranger, 4.0L Aerostar or 4.0L Mountaineer) and in this article I’ll show you how to do it. Contents of this tutorial: Symptoms Of A Bad Fuel Pump. FUEL PUMP TEST 1: Using Starting Fluid. FUEL PUMP TEST 2: Fuel Pressure Test With Gauge.

What causes a 2.3L Ford Ranger to not start?

CASE 1: If the fuel pressure gauge registered 0 PSI. This confirms that the cause of your 2.3L Ford Ranger’s no start problem is caused by a lack of fuel. Now, I usually take one more precaution, before condemning the fuel pump as bad and this is to check that the fuel pump is getting 12 Volts as the engine is cranking.

How much does a Ford Ranger fuel pump cost?

The best part is, our Ford Ranger Fuel Pump products start from as little as $29.99. When it comes to your Ford Ranger, you want parts and products from only trusted brands.

When did the Ford Ranger get a 4.0L engine?

The 4.0L OHV (Over Head Valve) V-6 engine found its way in to the Ford Ranger in 1990 and ultimately replaced the 2.9L V-6. This evolutionary redesign of the American 2.9L solved many of the reliability issues that plagued its predecessor. A beefier cylinder head design eliminated the 2.9L’s common failure of cracked heads.

How do you test a Ford 4.0L fuel pump?

You don’t have to completely remove it, since you’ll have to reconnect it in one of the next steps. Open the throttle, manually, and spray starting fluid down the bore. When you have sprayed a good squirt of starting fluid, quickly reconnect the Air Duct to the throttle body (you don’t have to tighten the Hose Clamp).

The best part is, our Ford Ranger Fuel Pump products start from as little as $29.99. When it comes to your Ford Ranger, you want parts and products from only trusted brands.

What kind of gas does a Ford Ranger use?

When your tank springs a leak or begins to muddy your gas with rust and sediment, AutoZone is ready with a replacement Ford Ranger fuel tank to get your truck back in the game. Clean, unadulterated gasoline is what your engine needs to run its best.

Do you need a new fuel tank for a Ford Ranger?

Select your Year, Make, Model and Engine to find those that fit your vehicle. Your Ford Ranger is ready for any situation, provided it has the gas it needs to get going. When your tank springs a leak or begins to muddy your gas with rust and sediment, AutoZone is ready with a replacement Ford Ranger fuel tank to get your truck back in the game.

What happens if you break the fuel pump relay?

A broken fuel pump relay causes a malfunctioning pump, starving the engine of fuel. The engine may stutter, stall or not start at all. Luckily, you can test the fuel pump relay in a 1994 Ford Ranger without buying any additional parts, relays or special tools.

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.

Can a bad fuel pump make a Ford Ranger difficult to start?

One of the best indicators of a clogged fuel pump is going to be that the your Ranger is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.

What does a bad fuel pump sound like?

A priming fuel pump sounds like a high-pitched whine for a few seconds and can be heard with a sharp engine right after the ignition key is turned, but before the starter is engaged. The symptoms of a bad fuel pump match a lot of other common problems that can occur in the Ford Ranger.

Where is the fuel filter on a Ford Ranger?

In most cases, the fuel filter is located under the driver’s door along the frame rail. The line running to the filter from the fuel tank is the inlet line. Take the inlet line off by squeezing the quick connect fittings and pulling the line off the filter.

Why does my Ford Ranger have no power?

[quote=”tomatofarmer1″ post=111306]This could be so manny things, from ignition components, dirty injectors to restricted fuel/ fuel pressure as Tedybear315 noted. Maybe a little more detail about the make of the vehicle and more detail about the symptoms would help.

What are the symptoms of a bad fuel pump?

The engine may still crank when the key is turned, however it will not be able to start due to lack of fuel. This symptom can also be caused by a wide variety of other issues, so having the vehicle properly diagnosed is highly recommended. 3. No noise from the fuel pump

How do you test a fuel pump relay?

Insert it into the empty fuel pump relay, third from the right. Insert the relay removed originally from the third slot and insert it into the fifth position from the right. Start the vehicle. If the engine stalls, stutters or does not start, the fuel pump relay is bad. Remove the original fuel pump relay from the fifth slow from the right.

What do I need to test a Ford relay?

This relay is used for the PCM, fuel pump, fan motors, and a bunch of other stuff. What Tools Do I Need To Test The Relay? You need a few basic things and they are:

Can a bad fuel pump make a Ford Ranger not start?

A bad fuel pump will make your 4.0L Ford Explorer (Ranger, Aerostar, or Mountaineer) Crank but Not Start. Here are some more specific symptoms: The ignition coil pack is creating and delivering spark to all six spark plugs.

How to test a fuel pump relay on a 94 Ford Ranger?