How to Fix No Power From ECM To Fuel Pump Relay?

Fuel Pump Relay is an important part of any vehicle like a truck or car. This supplies the fuel to the engine that is most important on a vehicle to run it. So, if there is no supply of power on the Fuel Pump Relay from ECM then your vehicle will not start.

Then what is the solution? How to fix no power from ECM to fuel pump relay? Is there any solution to this problem? The answer to all these questions will be clear if you read this article till you get the last sentence. We are going to talk about how to fix no power from ECM to fuel pump relay and many more about it. So, let’s start.


Why There is No Power From ECM To Fuel Pump Relay?

If your fuel pump relay does not get enough power from your Engine Control Module or ECM then you have to know why it happens? Without knowing the answer to this question, you will not be able to fix this problem.

One common cause behind this issue is the battery connection of the fuel pump relay is loose. The power goes from the battery. So, if the battery connection is loose then the fuel pump relay will not get enough power.

Another reason behind this issue may be the ECM has some problems. If that is true, you will have to spend a big amount to fix it. These are possible reasons behind the low or no power to fuel pump relay.

What happens when there is No Power From ECM To Fuel Pump Relay?

There are a number of ways to identify the no power from ECM to fuel pump relay of your engine. Among them, some are just symptoms and some are specific ways to identify this issue. Let’s see them.

If your vehicle faces this problem then you will find the check engine light is on. This is very common for any problem. One specific symptom of this issue is not getting any sound from the fuel pump. Your vehicle acceleration will also create some trouble.

These were some mild symptoms of the fuel pump relay not getting any power. There are some serious symptoms of this issue. Your engine may refuse to work again and again. If this runs for a long time then the engine may be dead. So, you must think about it seriously.

If you find these symptoms on your vehicle, you will need to be sure about the problem. To be sure about this, you will need to check the fuel pump relay power. In that case, you will need a digital or analog multimeter. If you find the power is low or there is no power then try to solve it. The solution is below.

How Much Does It Cost To Solve?

The cost of solving the no power on fuel pump relay depends on the problem your engine is facing. If the problem is in the connection and wire then it will cost only a few dollars like 10 to 20.

But the cost will surprise you when the ECM has a problem. There is no way to solve it except replacing it. In that case, a new ECM will cost like $900. With that, the mechanic cost will be added. So, it will nearly be around $1000.

How to Fix No Power From ECM To Fuel Pump Relay?

The solution is very simple and easy. But you have find exact problem. To find that problem specifically, you have to go through an inspection process and then take the right step to solve that. Let’s see all the steps.

Step 1: Inspect The Connections

From the ECM to the Fuel Pump Relay, there are almost three connections. One one the battery end, on the ECM from the battery and from the ECM to the Fuel Pump Relay. You have to check all these connections carefully. Don’t miss checking the wire too. A problem can be there too. This is a part of the inspection process.

Step 2: Clean The Connections

If you find any of these connections are loose or broken then you have to work on that. In that case, you have to clean that and reconnect that. Sometimes you may need to change the wire too if there is any problem there. This is the main treatment.

Step 3: Check the ECM Connection Port

If you find the connections and wire ok then you have to check the ECM connection port. This will give you the exact result. You will find the exact reason for no power. If the ECM is not providing power then you have to change this. Usually, everyone has to change it after a certain period of time.

Step 4: Replace the ECM

If the problem is in the ECM circuit then there is no other way to solve it except to replace it. The replacement is a complex job to do. In that case, you have to take the help of an expert mechanic.

This is how you may fix the no power from ECM to the fuel pump relay. The process depends on what problem your fuel pump relay is facing.


This is how to fix no power from ECM to the fuel pump relay. I hope you will be able to do it at home and the problem in the case of your engine is simple. The warning for you to take this issue seriously and solve it as soon as possible. That was all for today. Thanks for reading.

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