05 f150

I have an 2005 F150 with the 4.6 and 4x4 if that makes a difference about 4 out of 10 times when the truck is idling the oil pressure gauge drops and the computer sais "check gauges". Whenever the pressure drops if you slide the truck into neutral increase the Rpm's the pressure go's back to normal, the weird part is the truck runs fine when it drops it doesnt stall out or make weird sounds or anything, Does anyone have any idea what could be causing this?

picaflor

maybe the oil pressure switch is going bad. check that. its just a switch, ot a real sensor. also check your alternator for free in the discount auto parts store, maybe is going bad. when it does, it creates a lot of ghost problems in the electrical system

'08f150stx

Did you get your oil changed recently?
Consider changing your oil filter, with a Motorcraft.
Could be just that simple.

picaflor

that is a good point... a bad filter with no right back pressure could create a problem like that as well. avoid fram...

christian62

oil pump slowly goin out, my buddys 89 150 use to do that an i put a new oil pump on it an it quit

'08f150stx

Oil pumps usually don't go out, although the spring might be weak.
The oil filter has a bypass also, to increase oil flow during high rpm.
It only makes sense then that if the oil is bypassing the filtration system the oil pressure would be low when the RPM is low.
That makes the filter the easiest and cheapest thing to try first.
Then the oil sending unit.
Lets not give the worst case scenario, even though that could be the final step.

jamesyarbrough

could be sludge clogging up the pick up screen. you better get it figured out fast before it throws a rod

fol4321

I would hook up a manual gauge to the motor. Stock Ford gauges aren't that reliable. Then go from there

luckythirteen13

new filter is the cheapest step in the diagnosis process, id do that first. if the problem remains, id hit the junk yard and look for a new pressure sender and swap it in. if the problem is still there, id be worried

05 f150

It has new oil and filter, I just had a new alternator put in it