Katerina Swanson
If your fuel gauge is maxed out, you may need to repair your gauge cluster. You can send it off to be repaired, or you can try to repair it yourself. There are a few options for replacing the fuel gauge in a 1998 Nissan Maxima, including using an aftermarket fuel gauge. You can cut the green signal wire going to the fuel pump sending unit, or you can try to replace the fuel sending unit.
| Characteristics | Values |
|---|---|
| Fuel gauge maxed out | Send the gauge cluster for repair |
| Fuel gauge not working | Replace the fuel level sensor |
| Fuel gauge not working | Replace the fuel sending unit |
| Fuel gauge not working | Mount a new gauge where the ashtray is |
| Fuel gauge not working | Cut the green signal wire going to the fuel pump sending unit |
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What You'll Learn
Repairing the speedometer gauge cluster
If your fuel gauge is maxed out and you've already replaced the fuel level sensor, then your gauge cluster likely needs to be repaired. You can either send it off to a professional or attempt to repair it yourself.
If you're repairing it yourself, you'll need to carefully remove the unit from your vehicle. Take pictures of the unit for your records, in case it gets damaged or scratched during the process. Securely pack the unit in a suitable box to avoid damage during shipment.
You can then choose to install an aftermarket fuel gauge. One option is to cut the green signal wire going to the fuel pump sending unit. This will result in a high signal input error, but you will also get the low gas warning light and DTE will flash. Another option is to mount the new gauge where the ashtray is and wire power to it using wire taps on the constant and switched ignition to the stereo.
If you're replacing the fuel sending unit, make sure you clear the code after installation.
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Replacing the fuel level sensor
If your fuel gauge is maxed out and you've already replaced the fuel level sensor, your gauge cluster likely needs to be repaired. You can send it off to be repaired by a professional.
If you want to install an aftermarket fuel gauge, you can cut the green signal wire going to the fuel pump sending unit. This will give you a cel for high signal input, but you will also get the low gas warning light and dte will flash.
You can also try replacing the fuel sending unit. This may not work, but it's worth a try if you're stumped.
Regardless of what gauge brand you use, the results will be similar. After a few trials and errors, you should be able to get the new one working with no cel and gas lights on. You can mount the new gauge where the ashtray is and use wire taps on the constant and switched ignition to the stereo.
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Cutting the green signal wire to the fuel pump sending unit
If you want to replace the fuel gauge in your 1998 Nissan Maxima, you can cut the green signal wire to the fuel pump sending unit. This wire can be found under the back seat. With this wire disconnected, you will get a CEL for high signal input, and the low gas warning light will flash. You will also get a variable ground signal from the sending unit.
If you are installing an aftermarket fuel gauge, you can use wire taps on the constant and switched ignition to the stereo. You can mount the new gauge where the ashtray is.
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Using an aftermarket fuel gauge
If you want to use an aftermarket fuel gauge in your 1998 Nissan Maxima, you can follow these steps. Firstly, you need to decide where to mount the new gauge. One option is to mount it where the ashtray is, as this is a convenient location. Next, you need to wire power to the new gauge. You can do this by using wire taps on the constant and switched ignition to the stereo. Make sure to cut the green signal wire going to the fuel pump sending unit, as this will prevent a high signal input error. The new gauge should use a variable ground signal from the sending unit. Once you have completed these steps, you should test the new gauge to ensure it is working correctly. You may need to make some adjustments if you encounter any issues, such as the low gas warning light flashing.
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Replacing the fuel sending unit
To access the fuel sending unit, you may need to remove the fuel tank. In some vehicles, there is a service access panel underneath the trunk or back seat, but if there is no service port for the fuel tank, the fuel tank must be removed. Fuel tanks are large, cumbersome, and can be extremely heavy, so it is recommended that you have an assistant to help you with the repair.
Once you have access to the fuel sending unit, unbolt it from the fuel tank and disconnect it from the fuel and electrical connectors. Compare the movement of the old fuel sending unit to the new one, and adjust the arm if necessary to ensure the proper level will display on the gauge. Then, bolt the new fuel sending unit into place and reconnect it to the fuel and electrical connectors.
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Frequently asked questions
If your fuel gauge is maxed out, you may need to repair your gauge cluster. You can do this by sending it to a professional repair service. Alternatively, you could try installing an aftermarket fuel gauge. This involves cutting the green signal wire going to the fuel pump sending unit, which will give you a cel for high signal input. You will also get the low gas warning light and dte will flash.
