Question about 1990 Ford F150

2 Answers

Switching to rear fuel tank

When I switch to the rear tank, the fuel gauge does start to move to indicate fuel in the rear tank but then the vehicle stalls. There is fresh fuel in the tank but the truck will not run when I switch to the rear tank. The switch is good and the fuse is not blown. Is there a pump or some thing that is defective, and if so where is it located. I was told the pump is in the tank, and it will have to be dropped. I hope there is a simpler solution. Thanks. Walt

Posted by on

  • diverdownscu Mar 01, 2009

    It is a 4x4 5.0 liter. Thanks

  • Frank Simard
    Frank Simard May 11, 2010

    Is this Ford F-150 the 4x2 or the 4x4? Also, what size engine is is? The 4.9L (6 Cylinder), 5.0L (8 Cylinder), or the 5.8L (8 Cylinder)? This information is very crucial to get you that information.

    Thank you for using Fix Ya!


×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

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

  • Expert
  • 124 Answers

Go to the following site to view how to remove the fuel pump and install a new one.

  1. Go to THIS SITE
  2. Choose your vehicle year make and model.
  3. Then go to THIS SITE again.
Thank you for using Fix Ya!

Hope this helps.

Don't forget to rate the overall satisfaction of this solution.

Posted on Mar 01, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 333 Answers

That is correct the puel pums are located in the tank. Before getting upset check to see if the fuel pump relays are good by swapping them and see if the problem follows. Next select the tank you want to use and listen for the associated fuel pump to come on. I hope this helps. Don,t forget to rate my answer, thanks.

Posted on Mar 01, 2009

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 expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

What is wrong - The fuel gauge on my YP125R X-Max is constantly showing full


A constantly full fuel gauge is usually caused by a short circuit on the sensor wire. Check the wiring by isolating the wire as near as possible to the fuel gauge. Measure with an Ohm meter between the wire and earth, the reading should be more than 10 and less than about 200k. A short is indicated by a reading of around 0 Ohms, depending on the accuracy of your meter.
A second possibility is the sender unit in the fuel tank which could be faulty, and then finally, and only finally, the head gauge could be faulty.

Jan 07, 2015 | Cars & Trucks

2 Answers

Town and Country Van running out of gas and guage says half a tank what could be the problem?


If your fuel gauge is showing you in accurate readings this is normal to all vehicles that are not used to fill-up gas full regularly but sometimes the cause of the inacuracy is due to faulty float valve in the gas tank you need to replace it

May 09, 2014 | 2005 Chrysler Town & Country

1 Answer

I have a 1992 Mercury Grand Marquis Ls with a fuel gauge that does not work (gauge may be reversed)??? help please.


The fuel level indicating system is a magnetic type system, which consists of the sending unit located in the fuel tank, an anti-slosh module located on the back of the instrument cluster, and a fuel gauge located in the instrument cluster. The sending unit changes resistance according to the level of fuel in the fuel tank, which varies the current flow through the gauge.The pointer position varies proportionately to the current flow. In this system, the sending unit resistance is low (22 ohms) when the fuel level is low and high( 145 ohms) when the fuel level is high. The pointer of the magnetic gauge remains in position when the ignition is turned to the Off position. On some models, an anti-slosh module is used to dampen out fluctuating fuel signals from the sender. Some vehicles are equipped with a low fuel warning indicator. The anti-slosh module will also actuate the low fuel indicator when the fuel level in the tank reaches 1/16 to 1/8 full.


Do your other gauges/warning indicators work properly with the ignition on? If not, check for power at the fuse panel/fuses.

If they do then partially remove your cluster with connector still installed and check for voltage at cluster connector and gauge. Check continuity of cluster and gauge for ground.

Sometimes the anti-slosh module (if installed) goes bad in the Grand Marquis but not likely.

Sender troubleshooting:
  1. Perform test with resistors as follows:
    1. Disconnect wiring connector at sender unit, then connect resistor between gauge lead and a suitable ground.
    2. Turn ignition switch to On position.
    3. With 145 ohm resistor, the gauge pointer should contact the Full mark.
    4. With 22 ohm resistor, the gauge pointer should contact the Empty mark.
  1. Perform test with fuel sender of known quality as follows:
    1. Turn ignition to Off position.
    2. Disconnect wiring connector from sender and connect it to test sender.
    3. Move float rod away from fuel filter against Full stop position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or above the Full mark.
    4. Move float rod toward fuel filter against Empty stop position. Turn ignition switch to Off position. Wait approximately 30 seconds, then turn ignition switch to On position. The gauge should read on or below the Empty mark. If gauge works properly replace sender, which involves dropping fuel tank.

Mar 23, 2013 | 1992 Mercury Grand Marquis

1 Answer

Just purchased a 97 chev 3500 series pu with dual fuel tanks. Don't know how to switch from front to rear tank. there is no switch


There is no switch. What you have is a "transfer pump" that moves fuel from the rear tank to the front tank as required, so that you get a smooth declining indication of fuel left on the gauge in the dash.

If the transfer pump goes bad, any fuel in the rear tank will not be pumped to the front tank so you'll only be running on the front tank.

The fuel level indicator is on the front tank, so the gauge will still accurately register the amount of fuel in the front tank.

Jan 09, 2011 | 1983 Chevrolet C1500

2 Answers

My f350 1997 will not run on the rear tank . how do i go about finding what the problem is?


well, first, to find out if its the in tank fuel pump or the tank selector valve, the cheapest and probable easiest thing to do is find the selector valve under the truck and switch the incoming fuel lines. front tank to rear tank inlet, and vice versa. If the truck still doesnt run, you either have an electrical delivery problem to the in tank fuel pump or a bad fuel pump. If after switching the lines, it does run, then you need a new selector valve

Sep 23, 2009 | 1997 Ford F350 Crew Cab

1 Answer

I can't get the fuel to the engine from rear tank only


Does this have three fuel pumps? One in each tank and one on the frame rail. I know it at least has one in each tank. It doesn't have an electric switch valve. It has a mechanical one that makes sure the fuel returns to the right tank. When you flip the tank switch the power switches to the pump in the other tank.

Sep 02, 2009 | 1992 Ford F250

1 Answer

1993 Ford F250, 2 fuel tanks, 5,7 engine. Engine quits like it is out of fuel. Is it possible that the fuel tank switch shorted? I am able to start but dies quickly. Gauge indicate water in fuel. Where do...


The most likley cause of this problem is the tank to tank switching valve. To check this, simply turn the key on, do not start the vehicle, And have someone switch the tanks back and forth. You should be able to hear and or feel the valve moving. It is located about half way down the inside of the drivers side frame piece.

Aug 16, 2009 | 1993 Ford F250

1 Answer

Fuel Tanks reversed , Gauge not reading?


The Ford trucks were recalled for the tank switch replacement. Somehow the switches would pump fuel from one tank to the other. This would cause the one tank to overflow and or result in a fire from hot exhaust temps coming into contact with the fuel. Check the dash tank switch. It is probably bad.

Mar 12, 2009 | 1985 Ford F 250

1 Answer

Fuel tank


THERE is a valve on truck I believe it is called the switching valve.all the fuel lines run into it. when the switch activates pump in the tank this valve has a diaphram that the fuel pressure moves it . this valve is bad. i had this same problem once before and replaced it will be a black canister looking unit on frame with around 4 fuel lines going to it

Oct 07, 2008 | 1992 Ford F150 SuperCab

Not finding what you are looking for?
1990 Ford F150 Logo

86 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

63990 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Fordexpert

Level 3 Expert

5331 Answers

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

Answer questions

Manuals & User Guides

Loading...