What to Do After Replacing Crankshaft Sensor?

If you have had to replace your crankshaft sensor, you may be wondering what to do after replacing the crankshaft sensor.


As this is a commonly asked question since many people have difficulties after making this replacement.

Replacing the crankshaft sensor itself is not a difficult job to do, and the majority of drivers could do it. But that does not necessarily guarantee that it is going to start working again even when it is replaced.

That is because there are a few things you should do after replacing the crankshaft sensor to guarantee that it will start to work as normal. If you fail to do these tasks after replacing it, you may run into issues with it not working or working incorrectly.

Keep reading to find out how to replace a crankshaft sensor and what to do after replacing the crankshaft sensor for a successful replacement.

What You Need to Do After Replacing a Crankshaft Sensor

If you have just finished replacing your crankshaft sensor, you may be wondering what to do after replacing crankshaft sensor and your vehicle. As you often need to do something afterward in order to get it to work right, such as resetting it.

This is a relatively simple repair for your vehicle that is important as you need the crankshaft sensor to work. This is important for your vehicle as this is what lets the ECU know what position the engine is in.

From there, the ECU can fire the fuel injections as well as the spark plugs based off of this information. So you need the crankshaft sensor to be working correctly in order to safely drive your vehicle.

The hard part is really making sure that the crankshaft sensor has been installed correctly and is working. As many people have had issues afterward, as the crankshaft sensor did not seem to be working even though it was replaced.

So if this is an issue that you are having, there are a few things that you can do after replacing the crankshaft sensor to try to resolve the problem. So that your vehicle can start working as it should again without you having to worry about it.

Check Installation

If you have replaced your crankshaft sensor, but your vehicle still isn’t starting, you may have not replaced it correctly. This is very common despite this being an easy replacement as it may not be perfect.

That is why it is a good idea to check the installation once you have replaced the crankshaft sensor. If your vehicle doesn’t start, don’t worry, there is most likely just a small issue that you can easily fix.

This is the most common issue for people not being able to start their vehicle after replacing the crankshaft sensor. If this issue persists, you may need to disassemble it, and reinstall it to see if that fixes the problem.

Reset It

After you have replaced the crankshaft sensor, you need to go and reset it, otherwise the light will stay on. You can either do this manually or with a scanner, depending on what you have on hand.

Resetting the crankshaft sensor with a scanner will have to check for any issues and allow you to make adjustments as needed. This is one of the easiest ways to do this, as the scanner will do the majority of the work for you.

If you do not have a scanner, you can reset the sensor by accelerating and decelerating your vehicle in cycles. Alternatively, you could also disconnect the negative terminal of your battery and let your vehicle sit for at least an hour.

This will automatically reset the crankshaft sensor and turn off the check engine light for good.

Why a Crankshaft Sensor May Need to be Replaced

A crankshaft sensor is directly responsible for communicating to the ECU about the position of the engine. This is very important as the ECU controls the fuel injections and the spark plugs, firing them off at the right times based on the engine position.

If the crankshaft sensor is not working, your vehicle will not be able to start or stop, making it stationary. You will need to fix this before you are able to use your vehicle again.

How to Replace a Crankshaft Sensor

If you have yet to replace the crankshaft sensor, the good news is that this is a very simple process. Anyone can do this, even if they have no auto experience and have never replaced an auto part before.

The hardest part is simply going to be locating the sensor and getting it out of the location where it is installed in. As you are going to be working in a very small area, you will need to be careful not to damage anything along the way.

Aside from that, this repair is very simple to do and should only take a few minutes. Though you need to make sure you do this only when your vehicle is turned off and is completely cool as you will be working under the hood.

Locate Sensor

You are going to need to turn off your vehicle and Disconnect the negative battery terminal before you get started. Then you can locate the crankshaft sensor, loosening the bolts that are holding it down so that it can be removed.

Make sure you have allowed your vehicle to cool down completely before you start this process.

Remove and Replace

When removing the sensor, you are going to need to use a short extension as you are going to be working in a very small space. Once every bolt has been removed, you should be able to use your finger to remove the sensor.

You will need to disconnect the electrical connection that is secured to the sensor when you do this. Now that the sensor is removed, you can oil the new crankshaft sensor and the O-ring before putting it where the original sensor was.

Bolt the new sensor back into place and leave everything as you found it just with the replacement crankshaft sensor added.