Question about 1991 Ford F350

1 Answer

Fuel gauge on diesel flucuates all over with the unit unplugged one wire does test groung the other one tests dead, where does it gets its juice

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 90 Answers

The gauge gets it's "juice" from the sending unit which is located in the fuel tank.

Posted on Jan 02, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Gas gauge won't work and it has a full tank of gas. Is there a fuse I can change.


There might be but it is unlikely a fuel gauge is fused alone; usually if it is a fuse other things will stop working too but I suggest you are guided in this matter by your car handbook.

Problem is probably wiring and in particular the grounding of the fuel tank sender unit. It could be a faulty sender but they are usually quite reliable.

Test by disconnecting the wire from the sender unit at the fuel tank and short to a good ground and the gauge should read full. If the gauge wire is in a block with other wires it will be necessary to positively identify the gauge wire before testing.
If the gauge reads refit the wire and duplicate the ground wire to a known good ground. If the gauge still reads the fault is a bad ground to the tank sender unit and if it doesn't the sender unit itself is probably faulty.

If grounding the gauge wire does not produce a reading the fault is the wiring to the tank, the supply to the gauge or a problem with the gauge itself.

Feb 06, 2015 | Cars & Trucks

1 Answer

Fuel gauge doesn t work


Most of the time it is the sending unit in the fuel tank.Remove the connection from the fuel tank,and using a test light,test the wires that you removed from the fuel tank. Clip the alligator clip on the test light to a good known ground,and use the probe on the test light to touch the terminals in the connector you unplugged.Make sure the ignition key is turned to the on position,right before start position.Have someone to watch the gauge.At this point the gauge should be showing past the full position.When touching the right terminal in the connector you removed from the tank,the fuel gauge should move down toward the empty mark.If this fuel gauge doe do this when you are testing it,then the gauge in the dash is good and the sending unit is bad.

May 12, 2013 | 2011 Mercedes-Benz E-Class

1 Answer

1984 Ford F150 Fuel gauge reads empty


I would bet the sending unit is bad but lets check it, a good test i use is that i have a used sending unit i connect to wiring to test the gauge and wiring, if the gauge moves when i move the testing unit then i know the gauge is good and the wiring to, locte the connector at fuel tank, and unplug it, this will be the one the leads to top of the tank and the connector will be on the side be the frame on drivers side, the way you know you have the right connector will be the truck will not run as this connector has the sending unit and pump wires in it, if the gauge goes to full then you know the wiring is good and the gauge is good, you can jump the two wires and gauge should go to full also. the problem is you must get the right wires for sending unit or you may pop fuse, let me see if i can get you a wiring diagram or just do the full test by unplugging connector.

Okay, your sending unit has a yellow and white wire, thats the sending unit wire, the other is a ground and we wont worry about that. so if you want to see if gauge will go to empty or full just unplug connector and gauge will move to full then if you take a wire and jump the yellow wire with white stripe to a good ground the gauge will go to empty, the thing is your gauge is on empty so sending unit may be grounded out, good day10_21_2012_4_15_34_pm.gif

Oct 21, 2012 | 1984 Ford F 150

1 Answer

Wiring diagram 2006 fordranger diesel pickup


Hi , there will be 3/4 wires at the fuel tank gauge. 1 ground wire ,1 gauge(on dash) wire, 1 gauge low level indicator light (warning on dash) Get a test lamp , ground test lamp and probe each wire. 1 will do nothing (earth wire) 1 will bring on dash low fuel light , the other will be the gauge on the dash which will rise (slowly) to the full position.

Jan 05, 2012 | 2005 Ford Ranger

2 Answers

Fuel gauge dont work right two wire plug one tests ground the other is dead where does it gets it juice


It receives positive voltage through the sending unit which is mounted in the fuel tank and acts as a variable resistor.

Jan 02, 2011 | 1991 Ford F350

1 Answer

How to test fuel gauge in dash 89 chev 2500 so I can tell if the gauge or tank unit is bad. The dash fuel gauge will change 1/4-1/2 tank overnight even if the truck has not been run.


To test the gauge,unplug the connector at the tank,the fuel gauge will go to full,then ground the wire to the fuel gauge,and the gauge should go to empty,I use a test light for grounding the circuit,to keep from grounding the wrong connector,when doing so,the test light will glow dim,and the gauge will go to empty slow.

Apr 20, 2010 | 1989 Chevrolet C/K 2500

1 Answer

Fuel gauge not working on my 1988 ford f159


It is most likely the sending unit in the fuel tank,but,check it first,if you unplug the connector to the fuel tank,the gauge should go past full.If you use a test light,and ground the clip on the end of the test light to a good,known,ground,and touch the right wire,it will light up dim(test light)and the gauge will pull down slow,to ,past the empty mark on the gauge,if it does this,the sending unit is bad,if it does not respond to any of this testing,then the gauge,or a connection to the gauge is bad.

Jan 19, 2010 | 1988 Ford F 150

3 Answers

Fuel gauge stays on full


Change the sending unit it is not working.

Aug 21, 2009 | 2003 Nissan Altima

1 Answer

Fuel gauge bottomed out and a ground wire was burnt should i try a new gauge and ground to frame


Fix the groung wire. Jack up the vehicle and put on jack stands before going underneath. If you can get to the electrical on the tank or just before it and disconnect, clip a test light to a good ground and touch each pin and see if the inside gauge move to full. If it does, make sure there is ground to the connector also. Then you can change the gauge if all test akay.

Jun 11, 2009 | 2003 Hummer H2

1 Answer

Fuel and temp sensor problem toyota corolla two door 1989


Find the temperature sensor(usually around the thermostat housing)'disconnect connector and ground it with a test light. Observe the inside gauge. It should slowly go up. If so, change sensor. Do the same for the fuel gauge located on the fuel tank. If gauge move to fill as you groung the sending unit wire, change sending unit. Test the right wire. Ask for further assistance.

Jun 11, 2009 | 1989 Toyota Corolla 2 Door

Not finding what you are looking for?
1991 Ford F350 Logo

Related Topics:

153 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

77514 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

fordexpert

Level 3 Expert

5627 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...