How to test and replace a fuel pump relay. Nissan experienced a huge problem from the supplier of the crank and cam sensors. Should be the same as my 1995, which is the same generation. Nissan actually redesigned the sensor and i think they performed a recall on some vehicles. They should have also triggered a check engine light a while back.
Squeeze the connector lock fitting which is usually white or clear color, and with a twisting motion pull the fuel line fitting toward the front of the car. It's better to do this when the tank is close to empty Also in a 1994 sentra the engine should have multiport fuel injection which would mean the non-use of jets, instead they use injectors for each cylinder. The voltage will only be triggered for 1 to 2 seconds. Remove the bottom seat cushion which gives you access to the fuel pump cover plate. Thanks to everyone here with all the helpful hints about the old Q's, you guys are great. Such as, safety glasses, jack stands, no loose clothing, etc.
You will have to tilt the pump and manuever it until you clear the float and wiring. Trying to avoid tearing the back seat out of the car again, any suggestions on where else to start looking? Because most people don't have access to a powerful scanner or a digital storage oscilloscope to verify the failure I recommend replacing the cam and crank sensors at the same time. Remove the plastic panel that is by the driver's side door near the floor close to the speaker when the door is closed and underneath the fuse box. Do not let malfunctioning relay affect your ride, install our Replacement Fuel Pump Relay now! You should have battery voltage with the key on. Loosen the ring by turning it counter clockwise until it is removed. I wouldn't more likely to think there is an issue with the crank sensor as they are more common for causing a no start condition.
Therefore, it's important to take care of this issue in order to prevent being stranded on the side of the road. I replaced the fuel pump about a year ago and it ran well until the other day when it died suddenly while driving. You will need to download the Power Supply and Ground Circuit manual. The fuel pump is located through an access hole under the rear seat. Release the 4 locks, lift the cover and disconnect the electrical connection to the pump.
The supplier has upgraded the sensors from plastic to metal for improvement. Always adhere and follow safe practices when working on vehicles. The blue one is the fuel pump relay. A substandard fuel pump leads to a lowering in related pressure, eventually resulting in a notable decrease in fuel economy and overall performance. We love when auto parts experts come to our site and we love when car parts newbies come to our site. Publication, reproduction or distribution of this film is strictly prohibited.
. They are fairly inexpensive and easy to replace. Where is the Fuel Pump Relay? Replacement brand parts are the most affordable solution for all of your replacement needs! On 2000 Fronteir Desert Runner V6; Fuel pump relay was found under dash above E-brake. We're here to help you find that perfect Fuel Cutoff Relay for your Nissan Altima. There is then an access panel on the top of the tank which you will have to remove to be able to disconnect and remove the fuel pump inside ….
The pump is secured in the tank by a threaded black ring. If there is no fuel pressure than you would need to make sure the fuel pump is getting power and has a good ground before replacing it. Suspect it is the Fuel Pump Relay? The fuel pump is definitely not working now, not sure if it's the Fuel Pump Relay or the Control Unit that I did not replace with the pump. If that is ok the fuel pump is faulty. Cam and Crank sensors are a common failure item for Nissans of that era. Entering your vehicle information in our Year Make Model selector up top, helps ensure you get an auto part that fits your car, truck or other type of vehicle.
The principles shown here apply to most vehicles. Disconnect the fuel line which will have residual pressure in the line. Remove that nut and pull down and out to remove the panel and expose a small bracket that holds two relays. Check the fuel pressure and if it is not ok then make sure the proper power is sent to the fuel pump. Cautions: No smoking, do not bend or distort the sending unit float arm, the fuel line is under pressure, note the location of the pump assembly O ring seal, assembly is the reverse of disassembly, and the entire assembly is replaced, and not just the pump like other vehicles. Then lift the fuel pump half way up.
Just to left of the left foot rest is a plastic nut that holds the kick panel to the floor board. There are some mechanical issues that can cause a no start condition as well. I've check the fuse box next to the battery, and also next to the driver's left knee. Fuel will pour out, so have something under the vehicle or fuel line to catch or absorb the fuel. Thanks for posting the pics.