Question about 1990 Cadillac SeVille

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1990 seville-where is fuel pump fuse & relay located - what colors are fuel pump wires at tank connector - trying to check for power

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  • xray Joe Oct 13, 2010

    Are you sure the security system has not shut the fuel system and pump down

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It is located down under rh side of dash . below glove box abd is usually the third fuse in the bow

Posted on Nov 18, 2010

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3 Answers

90 lesabre limited Fuel pump fuse blows every time I start the car It's a 20a fuse, I'm not even sure if it's a final pump fuse I can't find any diagrams showing what is what. Right side of dash


20 AMP is a big fuse, I would say its the fuse to the motor check this web site http://www.beijing-fanyi.com/1990/1990-buick-lesabre-wiring-diagrams

Apr 04, 2017 | Cars & Trucks

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Where is fuel pump relay for1994 mighty max?


Power For Engine Control Relay ( fuel pump) Comes From Fuse Link 2 (20 Amp) Behind Battery--Engine Control Relay Is Located Below Right Side Of Dash--At Kick Panel--Output To Fuel Pump Wire Color Is BLACK/BLUE

Feb 26, 2015 | 1994 Mitsubishi Mighty Max

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I replace the fuel pump on my 1992 ford bronco and still doesnt supply fuel is there a relay i dont know of


Are you getting battery power and ground at the fuel pump connector? (This should have been checked BEFORE replacing the pump)

Other things to check:
1. Fuel Pump relay in the Engine Compartment Fuse Block
2. The relay is powered (Secondary -or- "fuel pump side") by Fuse 0 in the Engine Compartment Fuse Block.
3. The relay Primary -or- "control" side is powered by Pin 37 RED wire at the PCM
4. The relay Primary control (or ground circuit) is operated by Pin 22 LIGHT BLUE/ORANGE wire at the PCM
5. The Inertia Fuel Shut-off Switch located between the fuel pump relay and the fuel pump may need to be reset. The switch is located behind the right kick panel. The DARK GREEN/YELLOW wire at the switch is the feed from the fuel pump relay. The other wire goes to the fuel pump. Some units have the DARK GREEN/YELLOW wire going in and the wire going out can also be DARK GREEN/YELLOW, or PINK, or ORANGE - the wiring diagram for your vehicle does not specify the color of the wire that actually goes to the fuel pump itself.)
6. If none of the above produce any results, make sure that your ground wire at the fuel pump has good continuity to ground. It usually screws to the left frame rail near the fuel tank.

Any of these components (including the PCM) or their connecting wires could be the cause of your problem.

May 15, 2011 | 1992 Ford Bronco

1 Answer

1990 ford festiva no power to fuel pump. replaced relays , fuel pump, checked safety shutoff. nothing .. ran hot wire to fuel pump and pump worked but car still not trying to start. got spark. now what


The pump should have a fuse in the fuse block. You need to check for power in the fuse block and you need to check power to the pump relay.

Sometimes there is a fusible link to the Relay. If you check the connector terminals for power where the Relay plugs in, you can determine if the fusible link has blown. You could have already replaced the bad parts and now need to restore power to the Relay.

Oct 10, 2010 | 1991 Ford Festiva

2 Answers

No power to the fuel pump


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 ) :
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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.

Nov 17, 2009 | 2001 Ford F150 Styleside SuperCrew

2 Answers

How to change fuel pump 1990 cadillac seville


The fuel pump and sending unit is located in the tank. I hope your tank is empty, if not you will need to siphon it out. It is dangerous with the gasoline, and remember the fumes burn, not gas. You start by removing the filler hose, then loosen straps, detach sending unit wire and fuel line, then lower tank. Then unscrew the sending unit/pump and replace. reinstall.

Jul 05, 2009 | 1990 Cadillac SeVille

1 Answer

Where/ how do i locate the power wire for the fuel pump on my 1996 holden rodeo? i've been told there will be some wires for the guage and some for the pump which lead into tank. Is there a way of...


if my memory is right there is a connector near chassis rail that comes from on top of fuel tank, 2 wire connector this is for pump you can check for power on wires from turning ignition to on position it should power up fuel pump for approx. 5 seconds then stop. will have continuous power while cranking (black with blue trace) other wire is black(earth) this is separate from tank sender unit. are you getting power at fuse check with test light if no power relay is not working.

Jun 24, 2009 | 1990 Isuzu Pickup

1 Answer

1900 wrangler will not start.


Why are you so sure it's the fuel pump?

Are (ALL) the plugs getting spark?

Is there adaquate back pressure?

Is there good compression?

Have you confirmed a circuit to the fuel pump?

Is the pump getting voltage and ground?

Have you confirmed a working fuel pump relay?

Dec 28, 2008 | 1990 Jeep Wrangler

1 Answer

Cranks but no start


There is no fuel reset button on this van.

To test the circuit before removing the tank, you will need a voltmeter or cheap test light. Disconnect the connector at the fuel tank. On the harness side, locate the gray wire (fuel pump wire). Connect the test light to a good ground. Have a helper crank the engine over. While engine is cranking, the gray wire should have power. If it does, and the pump is not turning on, then the pump must be bad and need replacing. If there is no power on the gray wire with engine cranking, the circuit is the problem, not the pump. Go back and find the fuel pump fuse in the junction block (the fuse relay block where the fuel pump relay is). Check the fuse, also check if there is power going to the fuse. This fuse should be hot at all times. The circuit goes from battery to pump fuse to fuel pump relay to gas tank and the fuel pump.

Aug 02, 2017 | 1995 Chevrolet Astro

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