Question about 2003 Ford Expedition

1 Answer

Looking for the fuel pressure specification on 2003 expedition. Truck hesitates while driving, at times the dash chimes and battery light comes on /off quickly and continues.

Posted by on

  • kylesit Jul 15, 2009

    Benjamin -

    would any of the mentioned items be intermittent? Today while driving home as I reached 20 miles an hour the front end was shaky and the rpms were right about 1. When I got home I put truck in park and stepped on the gas.... it then stalled. I waited a moment and it restarted fine.


×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,037 Answers

Normal fuel pressure for your vehicle is 30 to 45 psi.

What you are concerned with is pressure bleeding off after the engine is shut down; if you shut the engine off it should still be showing the same or very close to the same pressure after a couple hours of sitting. If it does not, fuel pressure is being lost through a faulty fuel pump, faulty pressure regulator, leaking injector, or an external leak in the system somewhere...

If pressure is bleeding down, try clamping the fuel supply line shut immediately after shutting the engine off. This will tell you whether or not pressure is being lost back through a worn pump.

If this does not stop the pressure loss, then repeat the test and clamp off the fuel return line. If this stops the pressure loss, then a leaking fuel pressure regulator is the cause.


What it otherwise sounds like is a loose connection in the electrical system otherwise like you may not be getting the power needed to the pump.


Benjamin

Posted on Jul 13, 2009

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 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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

High temp low oil pressure light comes on after driving for a few minutes, then off when engine at driving rpm. At stop light (idle or low rpm) light comes back on. Normal driving it goes out.


You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

Jul 06, 2015 | 2003 Ford Expedition

1 Answer

Truck engine shuts down while driving. Sometimes it just hesitates and comes back sometimes it dies.


guessing fuel pump you can buy a fuel pressure tester hook it up to the shrader valve on the rail and tape the pressure tester to your windshield and have someone in your passenger seat and monitor the pressure and if it drops off then dies you know the problem....

Mar 08, 2014 | 2003 GMC Yukon XL

1 Answer

2003 ford expedition starts after couple trys then runs great just having probles starting


The light is supposed to be on when the alternator is not charging the battery, IE not producing more power than the battery already has.
You may have to try to catch the system when the light is on to test output.
Do you know what fuel pressure is before and after cranking ? You could be loosing fuel pressure back into the tank, or it could be something electrical.

Feb 19, 2014 | 2003 Ford Expedition

1 Answer

2004 no power shout off driving


This is going is going to take a diagnostic machine to be wired into the truck and taken on a road test.

About all I can suggest before doing that is to have the battery checked. Sometimes a cracked battery plate can float inside a battery and short.

Another possibility is on dual cam motors there are parts called "cam phasers". It would not have anything to do with the dash lights, but can cause stalling out at high speeds and lack of power.

What happens is each side of the motor has a Camshaft. The 2 sides are not connected in that they advance and retard timing independently. The cam phasers control that function.

When 1 phaser malfunctions, your engine is out of time within itself. It may stall or knock.

I wonder about your fuel pump. Did you test the fuel pump pressure after the change? Try a fuel pump relay?

Some of the items I mention can cause your problems and not generate a trouble Code or check engine light.

Mar 02, 2013 | 2005 Ford Expedition

2 Answers

2003 Ford Expedition fuel filter place Diagram


need to replace the fuel filter on a 2003 ford expedition. Do not know the location of where it is at.

Feb 04, 2013 | 2003 Ford Expedition

1 Answer

I have a 2003 ford expedition starting problem


hook up a fuel pressure guage and check it at start up, key on pressure should build and hold , if not check it could be regulator of leaking injector

May 20, 2010 | 2003 Ford Expedition

2 Answers

Tire pressure sensor or gauge


Have you checked tire pressure? It will come on if your tire pressure is just a few pounds low.

Jun 24, 2009 | 2004 Ford Expedition

5 Answers

Door ajar light and chime come on while driving -


these vehicles notorious for bad switch in driver door latch spray latch area with elec contact and shut door 10 times should go off if not replace doo latch/switch from ford not a better idea from ford good luck

May 27, 2009 | 2003 Ford Expedition

1 Answer

Unknown warning chime on 2000 Expedition


This is basically the door chime that stays on. I had the same problems in a couple Ford trucks. the only easy solution it to find where the chime speaker is on your expedition and disconnect it. It should be somewhere behind where your stereo is.

Jan 08, 2009 | 2000 Ford Expedition

2 Answers

2000 Ford Expedition, power windows and dome lights won't come on


first of all you may not be looking for a fuse if you have an owner manual check the fuse box under the hood as well it maybe one of the little boxes called a relay

Jan 02, 2009 | 2000 Ford Expedition

Not finding what you are looking for?
2003 Ford Expedition Logo

Related Topics:

50 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

fordexpert

Level 3 Expert

5537 Answers

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

Answer questions

Manuals & User Guides

Loading...