2000 F-150 5.4L Lariat--- my oil level gauge drops to the bottom and my check oil light comes on sporaticly and especially when the outside temp is cold---
sending unit???? wire to s/u ??? what is it and where is it??????

68k mi --- using 5w30 ...... light will usually go out and gauge indicator will level out after i run awhile

 

How cold? What weight oil are you running? How many miles on the 5.4?

 

Mine did the same thing. It is probably your oil pressure sensor, it did it to mine to It does both pressure/temperature. Go to Ford ask for a new one (they should always) have them in stock they are 20 bucks or so and Motorcraft parts. Its about a 10 min. install just make sure you have extra oil ready and that there is an oil pan ready. On mine (although 4.6) it was right underneath and readily accessible. Ford even printed me out a diagnostic and blow up of the engine to show exactly where its at.
~Phil

 

The oil pressure sending unit is bad. It is located about 1 inch above the oil filter.

 

68k mi. ..... use 5w30 30 to 50 degrees f

 

makes no difference.

replace the flippin sender switch and be done with it.

Steve

 

ok will do... thanks