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Anonymous Posted on Dec 25, 2017

I have a Ford Expedition 1998 5.4 engine ... when starting the engine oil pressure light goes to a minimum ... I changed the oil pressure sensor, but obviously this is just for the lamp, where the sec

I have a Ford Expedition 1998 5.4 engine ... when starting the engine oil pressure light goes to a minimum ... I changed the oil pressure sensor, but obviously this is just for the lamp, where the second sensor is for pressure, if someone can be a send me a picture or point to another problem? thank in advance

1 Answer

jack layton

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  • Ford Master 5,569 Answers
  • Posted on Dec 25, 2017
jack layton
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Sorry, I only saw one oil pressure sensor for your vehicle and it screws into the oil filter adapter.
I did look at oil pressure, it said 20--45 psi@1500 rpms. Any specs you see on the internet you would probably be wise to double check. All databases are not created equal.
You might be able to use analog gage in place of oil pressure sending unit to double check oil pressure.

5 Related Answers

shaggyrat

Christophe Thompson

  • 1224 Answers
  • Posted on Dec 06, 2008

SOURCE: 98 ford Exped. oil and engine light come on but go off on restart

did you check the transmission heat sensor or the intake air sensor these can be incorporated with temp guage on some vehicles

but theres also the problem of alternator is getting ready to give only
take an electro meter and hook up to cigarette lighter with a 2 post power maker and watch the voltage as your driving try to recreate the conditions that brought this about if the reading changes dramatically this will tell your alternator will need to be replaced at some point also dead cells in battery creates this little bump in electrical

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Anonymous

  • 962 Answers
  • Posted on Feb 06, 2009

SOURCE: oil light, noisy engine

What type of noise does it make. check if it has "blowby" . Blowby is when there is air coming through to the fuel system. It means that the rings , bearings , and other critical components are bad.The engine needs a complete overhaul or a new engine block. Maybe even the heads. if's it's a ticking, clicking kind of noise it is the valve lifters or rocker arm problem.such as the valves.

Anonymous

  • 783 Answers
  • Posted on Apr 03, 2009

SOURCE: reset change engine oil soon light 2008 ford Expedition XLT

If you have the optional message center it is on page 144 of your owners manual. Press and release the SETUP
control to display “OIL LIFE =
XXX% then HOLD RESET = NEW”.

If you have the standard message center this begins on page 126 of your owners manual.

Anonymous

  • 1 Answer
  • Posted on Aug 15, 2009

SOURCE: 98 expedition starts then after 15-20 seconds engine dies..

Replace the idle air control valve. Mine just did it today the 15th of August. I replace the Idle air control valve and problem solve. I have a 2000 Expedition 5.4 liter.

czaa

Arnie Burke

  • 7339 Answers
  • Posted on Sep 15, 2009

SOURCE: 2007 Ford expedition won't start

ur oil pump may be failin-there r sensors everywhere on new cars-keepin u from starting as safety measure-computer systems r complex n things dont always show on 1 scan-they kinda hav the mindset of a pc

Testimonial: "Thank you. I have spoken with 2 other mechanics who said the same thing regarding the oil pump. It's being looked at. So I'll post more once I know"

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0helpful
1answer

I have a Ford Expedition 1998 5.4 engine ... when starting the engine oil pressure light goes to a minimum ... I changed the oil pressure sensor, but obviously this is just for the lamp, where the second...

don't rely on the oil pressure gauge in the dash, it's not a real oil pressure gauge. It's just a glorified "low oil pressure" lamp. It only has two readings - "normal" and "low", nothing else. The "sensor" in the block is actually just an oil pressure switch which you replaced.. which only has two states, on or off. If your gauge is fluctuating between "normal" and "low", it means either that the switch or wiring to the switch is bad, or that the oil pressure is so low that it barely makes the pressure switch turn on. If it's the latter, then it could be either low on oil... not! Or something clogged, such as oil pickup tube, filter or oil channels. Other causes for low oil pressure is a failing oil pump, or worn out journals or main bearings, which basically means the engine is worn out.
Hope this helps a little. Could get it checked at a shop with a mechanical pump gauge to see what your true pressure is. Thatll tell you if it's the switch light is bad
0helpful
1answer

When driving oil pressure light goes off when at stop oil pressure light comes on

Either a bad sensor, your way over-due for an oil change, the engines sludged up. or the motor is worn out. You should take it to a qualified shop to find out which.
0helpful
1answer

I have a 99 ford expedition an the oil gauge goes up when i start the truck up

check your oil, make sure level is okay. I do not like to through parts at a problem without diagnoising it first, but oil pressure sensors are fairly cheap, you could just replace it, and see if that fixes the problem, or have the sensor checked and make sure the gauge is working correctly.

MAKE SURE THE RIGHT OIL IS IN THE ENGINE, A WRONG GRADE CAN PRODUCE DIFFERENT OIL PRESSURES
0helpful
1answer

Where is the oil pressure sensor/switch on a 1998

email me at [email protected] and I will get the diagrams right to you.
0helpful
1answer

Oil pressure gauge light on until engine gets warm and then goes off

oil pickup screen could be clogged, or your oil weight needs to be something different. for some reason your oil pressure is not correct until it warms up. First thing to do is run some engine flush through it.

Purchase and run some engine flush through the oil....make sure you buy a new filter and change the oil...

post back how it goes...there are some more things you can do but we should start off here first.


3helpful
1answer

I have a 1997 ford expedition and today when i started it I had oil pressure then I drove down the road and lost all pressure and engine started to tick, I turned the engine off and then back on and The...

Sounds like the oil pump is going out. I would not drive it until you find out for sure. The ticking is oil not reaching the valves and rockers.
5helpful
1answer

Oil light comes on when break then goes off

The oil light indicates that the engine's oil pressure has dropped below the minimum safe pressure. When the light goes out it suggests that pressure has been restored to a sufficient level for engine lubrication but this is nevertheless a bad sign.

I suspect that the oil level in the engine is too low and that the oil itself has greatly deteriorated and has not been changed for some time.

1. Check the oil level again, after the car has been standing for a few minutes, and make sure the engine oil level is at the maximum mark on the dip stick. If not then top it up.

2. Have the oil (and oil filter) changed in the car as soon as possible and ensure it is the correct spec viscosity oil for that engine .

3. Brake test the car to see if the oil light still comes on under braking.
If it recurs you need to have an oil pressure gauge hooked up to the engine (by an auto repair shop) to see what oil pressure is being achieved at various engine revs. If an independent gauge shows no problem with oil pressure then I would assume a faulty oil pressure sensor.
If the pressure gauge identifies a lower than normal oil pressure in the engine's lubrication system then the cause needs to be identified and fixed.

Sean
1helpful
1answer

2007 Ford expedition won't start

ur oil pump may be failin-there r sensors everywhere on new cars-keepin u from starting as safety measure-computer systems r complex n things dont always show on 1 scan-they kinda hav the mindset of a pc
2helpful
1answer

Oil gauge light staying on

Possibilities -

1. Failing oil pump
2. Engine sludge
3. Overfilled oil
0helpful
1answer

98 ford Exped. oil and engine light come on but go off on restart

did you check the transmission heat sensor or the intake air sensor these can be incorporated with temp guage on some vehicles

but theres also the problem of alternator is getting ready to give only
take an electro meter and hook up to cigarette lighter with a 2 post power maker and watch the voltage as your driving try to recreate the conditions that brought this about if the reading changes dramatically this will tell your alternator will need to be replaced at some point also dead cells in battery creates this little bump in electrical
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