Oil Light Stays On
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myfamnme

Tucson, AZ

#1 Oct 31, 2007
In my 2001 Ford Expedition the oil light started to stay on for about 2 minutes at the start up about 3 weeks ago. My husband and I thought it needed an oil change so we got one. Well it's still doing it and now doing it before I leave work in the pm. Coulc I get some insight as to what the problem could be? Thanking you in advance
Angelo

Somerville, MA

#2 Nov 8, 2007
I'm having same problem, I live in Boston, and I have a 2000 expedition, all winter when the temperature goes around 50 and bellow the oil light goes on and the gauge still down, after the car starts to warm up the light goes off and the gauge starts to work, during the summer never shows the problem.....:(
Jean

Pittsburgh, PA

#3 Nov 26, 2007
I have the same problem with my F150 (2001). Once the temperature gets below 45, the light stays on - will go off and the gauge goes up to normal, then drops down and light comes on again. This just started happening this year (2007). I have owned the truck for 5 years. Must be something with the 2001 models.
jpv

Mcallen, TX

#4 Dec 27, 2007
same problem here, it happens only in the cool weather and in the morning start up. My gauge goes from zero all the way up and down again erratically, does it several times before stabalizing. I have researched several sites and concluded that it may be the oil pressure switch (oil sending unit),or the body control module. Now I need to take to a auto-electric shop and have it diagnosed properly. Good luck, I think the labor will probably more expensive then the parts.
Kris

Spring, TX

#5 Jan 2, 2008
My 2000 Expedition is doing the same thing...Oil gauge goes down, then up. My temp light comes on and goes off at the same time my oil light does, but the temp gauge remains steady.

I have an oil leak in my sending unit, and I need to replace the gasket. I will probably go ahead and change out the sensor as well and obviously the oil filter and oil. Will be doing this this weekend 1-5-08 and I will report what happens.
Brian

Las Vegas, NV

#6 Jan 7, 2008
My 2001 Expedition does the same thing, when it's below 40 the the needle on the gauge drops and the light comes on mostly at start up when the engine is still cold. Does anyone know whats going on? I'm going to try and replace the temp. sending switch.
Scott

United States

#7 Jan 12, 2008
I got the same problem with my 2000 Expedition. When it's cold the light and the gauge act up. Does anyone know where the sensor is. On my 1993 F-150, it's next to the oil filter, but I can't find it on my 2000 Expedition.
Lisa

Manteca, CA

#8 Jan 13, 2008
Was anyone able to figure out what the problem is? My 2001 Expo started doing this last week, exactly as everyone here is mentioning.
Jeanne

Jefferson, MD

#9 Feb 21, 2008
My 2000 Expedition started doing this a couple
months ago....changed the oil a couple times
thinking it was a problem. It's not. The oil
light only goes on for a minute or so in the AM when it's cold. And, then again when it's cold, in the PM, after sitting in the work parking lot unstarted for several hours. Since it appears to be a problem with the oil sensor (or maybe a loose
connection), does this really do any harm to the vehicle???Do I need to fix it?
Hokie

Blacksburg, VA

#10 Mar 19, 2008
My 2000 Expedition has started doing this since Jan as well. I am going to replace the oil pressure switch and see if it fixes the problem. Does anyone know where the switch is located on the 4.6L? I can't find any mention of it in my repair manuals.
Leslie

Oklahoma City, OK

#11 Mar 27, 2008
My 1997 4x4 Exped is also exhibiting this behavior; again I notice it when it's cooler (like late evening/early morning). Any one had a definitive answer yet?
FRANCIS

Warner Robins, GA

#12 Aug 10, 2008
I have the same problem with my 2000 towncar. The oil light stays on until the car is warm. It does this in hot and cold weather. I have had the oil chaned, and it still continues to do this
cbusby

Anderson, SC

#13 Oct 30, 2008
myfamnme wrote:
In my 2001 Ford Expedition the oil light started to stay on for about 2 minutes at the start up about 3 weeks ago. My husband and I thought it needed an oil change so we got one. Well it's still doing it and now doing it before I leave work in the pm. Coulc I get some insight as to what the problem could be? Thanking you in advance
The oil pressure switch is bad, it causes the gauge and light to go haywire. it cost about $30 and very easy to install, Do it yourself because a dealer will get you for $200 or more.
Bryan

Pulaski, WI

#14 Sep 30, 2009
Did anyone find out if it was just the sending unit because thats what im going to change and try?
Josh L

Meridian, ID

#15 Feb 13, 2010
Bryan wrote:
Did anyone find out if it was just the sending unit because thats what im going to change and try?
The problem is the oil pressure switch. Sometimes more commonly referred to as the oil pressure sending unit. On these trucks, the switch is an "All or nothing" sensor. The gauge on your dash does not actually show true oil pressure. It only tells you if you have any oil pressure or not. The switch/sending unit/sensor (whatever you want to call it) it located just under where your oil filter screws onto the block. The one on my 5.4L 2001 Expedition took a 3/4" wrench and some swearing to get to it because it's tight in there....but it basically looks like a spark plug screwed in there with a small, 2 wire, wiring harness connected to the back. You will need to remove the oil filter to get to it, so plan on an oil change at the same time. I just replaced mine yesterday after a few months of sporadically showing no oil pressure. I picked up the new sensor at O'Reilly's for 6 bucks.
Gary

Columbia, MO

#16 Feb 17, 2010
Thanks Josh- finally someone who noted where in the heck the switch was and even the wrench size to start out with. Off to O'Reilly's.
Josh L wrote:
<quoted text>
The problem is the oil pressure switch. Sometimes more commonly referred to as the oil pressure sending unit. On these trucks, the switch is an "All or nothing" sensor. The gauge on your dash does not actually show true oil pressure. It only tells you if you have any oil pressure or not. The switch/sending unit/sensor (whatever you want to call it) it located just under where your oil filter screws onto the block. The one on my 5.4L 2001 Expedition took a 3/4" wrench and some swearing to get to it because it's tight in there....but it basically looks like a spark plug screwed in there with a small, 2 wire, wiring harness connected to the back. You will need to remove the oil filter to get to it, so plan on an oil change at the same time. I just replaced mine yesterday after a few months of sporadically showing no oil pressure. I picked up the new sensor at O'Reilly's for 6 bucks.
Jodi

Newport, OR

#17 Apr 27, 2010
Would someplace like Oil Can Henry's change the oil sending switch while they do an oil change? Do they sell those parts or can I bring the part in for them? Thanks
David A

Atlanta, GA

#18 Nov 4, 2010
I bought a used 2003 Expedition this last May with 190,000 miles and within 2 weeks the oil light came on and gauge droped out and within 200yards engine locked up! I had engine replaced with a used one with 100,000miles on it and have since put 4,000 miles on and this morning i got a call from my wife that while at the school bus stop the oil light came on and gauge was bottomed out! I had her restart engine and in a few seconeds the presure gauge needle raised to 1/2 and oil light went off. how can i tell if it is pump or presure sending unit? I cant aford another engine so can someone help me out?
Jay

Mount Airy, MD

#19 Nov 29, 2010
Change the switch... 8.99 at napa, 13/16 wrench behind the oil filter. I jacked up the truck a little and reached in over the tire to get at it. I had to unscrew it first to get the connector off. Good luck!
david

Plymouth, MI

#20 Jul 31, 2011
2001expedition, the oil gauge was going crazy so checked the oil it was fine so kept driveing now the truck cut off on me and won't start back up. Think its the oil sensor? HELP

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