I have a 83 280zx non-turbo which quit running. Heard pulsating noise at fuel pump relay (kicking in and out) under dash passenger side. Replaced relay, still does same thing. Replaced water temperature sensor, pulsating goes away but relay kicks out almost immediately. Can hot wire fuel pump to get it to start but this method is not very safe. Is fuel pump bad or do i need to look someplace else. I have been able to hot wire fuel pump briefly to get started and then car will run on its own.

passenger side kick panel the plastic panel on rt side u have to pull it n its back there

I believe it is attached to a support bracket for the dash behind the glove compartment.

located under the drivers dash heres a picture to help aid you. hope this helps

Yes, there is fuel pump relay, which is generally located on the passenger side kick panel. But in your case, the fuel pump relay on 2002 model Xterra is indeed located under the dash around the steering wheel, but no you don't need to remove the cover just lay in floor and you can see it, it will slide off a bracket and you can remove and replace it.
Good Luck!

fuel pump relay is on a bracket under the driver's seat the inertia switch is in the center rear of the luggage compartment. (trunk)

the fuel pump relay on a 91 to 93 dodge stealth base and es models is in the passenger area on the passanger side of the car there a lil kick panel held by one screw behind a black cap pull the panel of and its right behind it.. its a gold box with wire harness connected at bottom. its a 2 part relay that controls ur fuel pump and engine managment system. email me at [email protected] if u would like a pic of were it is at

I suspect the at this point, the main relay is defective. This relay controls power to fuel and spark circuits.

The PGM-FI Main Relay is actually comprised of two individual internal relays. When the ignition switch is initially turned ON , the Powertrain Control Module (PCM) supplies ground to the PGM-FI Main Relay. This ground triggers one of the PGM-FI internal relays that sends battery voltage to the fuel pump for two seconds to pressurize the fuel system.
When the engine is running the PCM supplies a continuous ground to the PGM-FI Main Relay. The supplied ground keeps the relay in the "closed" position providing electrical current to the fuel pump, keeping the fuel loop pressurized while the engine runs.
If the engine is not running with the ignition on, the PCM cuts the ground to the PGM-FI Main Relay, causing the relay to "open" and stop the electric current flow to the fuel pump. As mentioned previously, if the engine is not running, the PCM will only supply ground to the PGM-FI Main Relay for two seconds when the ignition switch is initially switched to the ON position.
The PGM-FI Main Relay also supplies electrical power to the Idle Air Control (IAC) Valve and to the fuel injectors.

TESTING


If the engine starts and continues to run, the PGM-FI Main Relay is working and does not need to be replaced.

1. Locate and remove the relay.

On some models of the Civic and Civic del Sol it is located to the left of the steering column under the dash. Many later models position it either near the passenger right side kick panel under the dash or by the driver left side kick panel up under the dash.

1. Attach the battery positive terminal to the No. 2 terminal.
2. And the battery negative terminal to the No. 1 terminal.
3. Check for continuity between terminal No. 5 and 4.
4. If there is no continuity, replace the relay and retest

The relay only operates after the engines oil pressure is at operating PSI. If the relay was replaced and the fuel pump is not heard working when the ignition key is switched to the ON position for 5 seconds, replace the engines oil pressure switch. That switches 3rd wire connects to the fuel pump to run it for 5 seconds to prime the engine. That switch can be tested without the engine running. Just turn the key to the on position and listen for the pump to run for 5 seconds

Once you check the fuel inertia switch in the passenger's side kick panel, next is to check the fuel pump fuse, engine compartment fuse # 10.

If this checks OK ( power on both sides ), you can pull the fuel pump relay, and jumper it.

The engine compartment fuse panel is where the fuel pump relay is located at ( relay # 301 ). Pull the fuse pump relay out of the socket, and using the diagram below, with the red line, momentarily jumper the Normally open contacts, you shoud hear the fuel pump run. ( mind the pin orientation when doing this ) :


I had a bad fuel pump relay on my 2001 F-150 @ ~ 36K miles. Replaced with the trailer tow battery charge relay ( relay #302 next to it ) and it worked again.
The symptom I had was a crank no start ( theft light on dash went out ).

If the fuel pump does not run, and power is on pin #30 in the relay socket, next is to check the output of the fuel inertia switch in the passenger side kick panel. The output of this is the Pink w/ Black stripe wire. The connector to the fuel pump inertia switch should be a 2 pin connector, the other color in the connector is Dark green w/ Yellow stripe wire ( that is from the pin #87 in the relay socket in the engine compartment ).

If that circuit has power at the passenger side kick panel, next is to check for power at the fuel pump at the fuel tank. The fuel pump motor is the same Pink w/ Black stripe wire. The connector is a 4 pin connector with black ( ground for the fuel pump ) black w/ orange stripe ( ground for the fuel level ) and yellow w/ white stripe ( to the instrument cluster for the fuel gauge ).
When testing by the fuel tank, make sure you have a good ground for the meter ( extension from neg on the battery or trailer tow adapter ) as that could also be a problem under the truck.

Sorry for war and peace, hope it helps.

There is a Fuel Pump relay. Not sure if Ford has a Relay Box under the Hood though. There are also Fuses that Control some items of the Fuel System. Try the Relays first and see what you have.