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Where is the ground wire.fro. the tank to frame

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Bought a Buick LeSabre and the fuel pump works out of car but not in the tank when hooked up relays and fuses are good no power to pump out of guessed

There should be a ground wire going from tank to frame. A lot of times this wire needs replaced or the ground connection cleaned at frame.

Oct 06, 2016 | Buick Cars & Trucks

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How do I repair or replace a defective gas gauge?

It is in the instrument cluster, which has to be removed to replace the gauge. It cannot be repaired. Did you first check the 10 amp METER fuse in the fuse panel?

Now let me say, that when the gauge quits, it is more often a fault in the sending unit in the gas tank, and not the gauge. Here is how to find out if your gauge is good: Find the fuel tank electrical connector, and pull it apart. You will need a small jumper wire. Find the blue wire in the body side of the connector (not the fuel tank side). Put the jumper wire into the blue wire terminal, turn the ignition key to on not start, and ground the jumper wire to a metal frame piece. Someone needs to watch the fuel gauge needle while the wire is grounded. If the gauge in the dash is good, the needle will move. It will probably go to either full or empty, but if the needle moves, the gauge is good and the fault is in the sending unit in the tank. Don't give up testing until you are sure the jumper wire is being grounded good to the frame. Just touch the wire to frame and watch the needle movement, once sure, stop so you don't blow the fuse. If the needle doesn't move, first check the 10 amp meter fuse. If fuse is good, it must be the gauge.

May 30, 2015 | 2000 Kia Sportage

1 Answer

Peugeot 307 HDI fuel gauge on empty flashing

Earth I am assuming is the GROUND for the tank or sending unit. Ground wires are usually black or green. This doesn't mean that it's not another color on your car, but black and green are the usual ground wire colors. Make sure that you have removed any rust that may be around the sending unit keeping it from being properly grounded to the tank. I'm not familiar with Peugeot, but I have seen many other similar problems with other vehicles sending units. If your gas tank is metal, make sure that it is grounded to the vehicles frame. Sometimes tanks depend on the mounting straps to ground the tank. They can rust and lose a good ground. You can also try manually grounding the sending unit to the tank or to the frame to see if that is the issue. If none of this works, it may be that your ground wire is broken somewhere between the sending unit and the dashboard which could be quite difficult to find. Good luck!

Oct 02, 2014 | 2002 Peugeot 307

2 Answers

How do i know i have a bad float in dual tanks?

Of readings are inconsistent with known fuel levels, Ground (or connect to a tester light) the sender unit wire and watch if the gauge rises.

May 20, 2014 | 1985 Ford F150

1 Answer

What can make a fuel pump not work attached to gas tank but work when conneted under the hood stight to the battery ?

Check the ground wire for the pump and see if it is grounded to the frame. Use the ohm setting on the voltmeter to do this. Or using the pigtail. Put the hot wire in the harness plug and ground the other to the frame, if it works, your ground is bad. You can trace it or just cut it and ground it close to the tank on the frame.

Apr 27, 2014 | 1997 Chevrolet Lumina

2 Answers

Ok so I have a 1978 chevy pickup, and the fuel gauge isnt working. It says i have a full tank all the time. Got any ideas on how to fix it? Also my left tail light isnt working, and the bulbs are all good,...

Check the ground wire to the fuel sending unit @ the tank, A ground wire can be spliced in and located on a good metal surface just about any where..

Aug 15, 2011 | 1978 Chevrolet C1500

1 Answer

Fuel Pump wiring

If I understand right, I would say the normal ground for the pump is bad.
"I am guessing the pump uses a ground source to start." well, just the normal ground like for any motor, you have the power wire (gray) to the pump, then the ground wire for pump, does it branch off near the tank and find a ground? Or does it go into the tank connector and then routed back somewhere through the wiring harness? Anyway, it has to go to ground somewhere. You have the wiring right it sounds,. just make a good ground source, or find the original ground and repair it.

Mar 14, 2017 | 1999 GMC Sierra

2 Answers

1990 chevy van G20 gas gauge shows full at all

The float inside the tank needs to be replaced. or one of the wires has a small short in it.

Dec 21, 2009 | 1993 Chevrolet G20

1 Answer

1992 f 159 dual tanks fuel guage not working

You will need to remove the wire for the sending unit on the tank and ground it to the frame with your selector switched to the tank you are working on and the key on. If gauge comes up to full then the sending unit is bad and gauge is good. Repeat process on other tank. The fuel tank switching valve on the frame also switches the wiring signal from either tank for the gauge. If no change with first test you will want to check the valve.

Aug 13, 2009 | 1992 Ford F150 SuperCab

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