Trucks & Trailers - 2005 f150 oil problem

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View Full Version : 2005 f150 oil problem


LBSpear26
03-24-2011, 05:12 PM
My oil pressure in my f 150 keeps dropping to zero and then going back up to normal, it is doing this repeatedly. Is this most likely my oil pump going out or could it be the oil pickup is clogged?


Tailwalker
03-24-2011, 06:29 PM
It is the oil pressure sending unit. Had the same thing happen on an F150 truck before. It is mounted on the motor down low. Need to get under the truck to get to it. Give it a look.

Jonboater
03-25-2011, 07:13 AM
Not the same vehicle but similar symptoms, oil pressure gauge would fluctuate. I had a Ford ranger do the same thing and the first thing I thought was the sending unit was going out as suggested. There was no lifter noise or anything like that so I thought it had to be it. Bought a new one to test out and long story short my problem was not the sending unit : ). I never even got a chance to install the new sending unit before it spun a main bearing.

My problem was the oil pump pick-up was clogged. About $700 worth of rebuild kit and machine work put me back on the road. I did all the R and R along with the rebuild to save money. Before hand the engine ran good but always used a little oil. Rebuild fixed that as well and the truck went for another 150K miles before I got rid of it.

I hope your is just the sending unit!


LBSpear26
03-25-2011, 09:19 AM
I am pretty sure it's not the sending unit because it started knocking shortly after the oil pressure went to zero.

Jonboater
03-25-2011, 01:45 PM
Ouch man. That is a fairly new truck too. Not familiar with your F150 but you might be able to drop the pan and replace the pump and pickup last ditch effort. Many engines the two are basically one unit that you can seperate once their out. Good luck!

crothers
03-27-2011, 10:57 AM
Ouch man. That is a fairly new truck too. Not familiar with your F150 but you might be able to drop the pan and replace the pump and pickup last ditch effort. Many engines the two are basically one unit that you can seperate once their out. Good luck!

Not trying to bust chops, but:
How do you know what model year and engine this truck is/has?
Trying to learn here. I can't see where the OP has given us that info.
Your advice is spot on, but knocking indicates a spun bearing already. Sad to say.

stateofmind
03-28-2011, 07:21 AM
Unless I am missing something, the year model of the truck is in the title?

crothers
03-28-2011, 12:56 PM
Duh, there goes my weak brain again. Yep, seems like an early demise of the engine. We shall see what the OP reports out.
My apology to jonboater and thanks for pointing out my oversight to stateofmind.
I am better off just reading and not posting!

LBSpear26
04-03-2011, 05:50 PM
Well I fixed my oil issue. It ended up being the oil pickup; it was clogged pretty bad. It was a pain in the behind getting to it because I had to take off my front axle but I was lucky it wasn't the oil pump because I would have had to take off my timing chain cover and timing chain to get to it.



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