2001 Ford F-150 Engine Oil Pressure Loss & Leak

Tiny
01F150LARIAT2WD
  • MEMBER
  • 2001 FORD F-150
  • V8
  • 2WD
  • AUTOMATIC
  • 159,000 MILES
2001 Ford F150 Lariat 2WD 5.4L V8

Twice now I have completely lost engine oil pressure. Two days ago on the way to work, I had just left the house and barely got down the road when I noticed my engine oil pressure gauge was all the way down and the oil light was illuminated on the dash. I quickly pulled off the road and shut off the engine. Upon looking underneath the car I noticed oil dripping from the area indicated on the picture. However, upon restarting the engine, the pressure gauge returned to normal and the oil light was off. I drove to work, and later that day back home & around town without a problem.

This morning when I started my truck I immediately noticed that I had no oil pressure and the oil light was on. I stopped and restarted the truck a couple more times and nothing changed. This time there was no dripping from the pictured area. I decided to carpool to work.

When I came home and went to check out the truck I started it and found nothing to be wrong. Pressure was normal, but there was a small amount of dripping from the same spot.

The oil was just replaced 1k miles ago. The oil on the dip stick is almost at the max level. I checked the drain plug and filter and saw no evidence of leaking. I am guessing all this is due to the leak, but I am dumbfounded by the leaks location.


http://www.2carpros.com/forum/automotive_pictures/573344_Oil_Leak_1_1.jpg

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Wednesday, September 15th, 2010 AT 7:59 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
WHen the gauge shows 0PSI, do you hear any knocking or ticking from the engine?

Also, I can't tell by the picture where anything is wet.

Let me know about the engine noise. If there is one.
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Thursday, September 16th, 2010 AT 7:28 AM
Tiny
01F150LARIAT2WD
  • MEMBER
There are no noises coming from the truck when the pressure is 0. I turn it off rather quickly as soon as the pressure is low. The picture has a small red arrow where I have seen leaking, but it doesn't always leak, even when the pressure is 0 sometimes I see no leak. Next time I see it dripping I will try and take a picture.

The truck started this morning and went to normal pressure, but within a few seconds the pressure dropped. I turned it off and started it again, and the pressure again started fine, but within a few seconds went to 0. I gently revved the engine, and the pressure went back up and remained there. I drove to work without incident and after work started the truck and returned home with any issues.

For what it worth (if anything), the few times this has happened was in the early in morning just after starting the truck, after it had been sitting over night.


http://www.2carpros.com/forum/automotive_pictures/573344_Oil_Leak_2_1.jpg

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Thursday, September 16th, 2010 AT 8:27 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
If there is no noise, the oil sending unit must be bad. Have you replaced it?

Let me know.

Joe
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Friday, September 17th, 2010 AT 8:02 AM

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