after i had my oil changed today my truck was making a nocking noise, idling rough and wants to shut off!! 07 f150 with 45000 miles on it! sounds like a vacuum line is off but not sure please help!!!

 

Did you check the oil?

 

yes, and i smelled the oil and looked for shavings

 

I pluged my meter in it said p0012 generic a camshaft osition timing over-retarded bank 1

 

did you use 5-20 and a good filter?

sounds like a cam phasor issue, they are oil pressure driven

 

I don't know much about the phasers, but if they are oil pressure driven change the filter. You might have a bad one, and it is really cheap.

 

It came back from garage! They said they change the cam shaft sinsor. they said my oil pressure is running about 13to 15 psi. Throwing a code of p0021. and truck is running like when i brought it in!!!

 

I have the same issue in my 07.. It started after my oil change... Go figure..

 

What are you going to do about it?

 

I am having similar issues. Hard starts, low power, pinging some knocking from the passenger side. I think the knocking is the phasers. I have had p0011-over advanced cam to. Took it to ford and they couldn't diagnose it. They said they let it idle for a couple of hours and it stalled on them and had low oil pressure of 14 psi. Who knows if the low oil pressure was before or after the stall. My cams are advancing at idle and can be slow to react sometimes. Thy said they are running 5 degrees retarded. They wanted to open up the top end but I told them no. They wanted way to much money just for that. They wanted to blame everything on low oil pressure or said maybe low oil pressure plus another problem. Service advisor said if was warranty work which it not they would replace the heads. I have not been able to reproduce the low oil pressure problem. Truck runs 24-30 psi at warm idle, 65+ psi at 2000 rpm and cold start up is at 75 psi, all within ford specs. I think it may be problem with the phasers or the cams and journals. Changed the oil yesterday and started a auto rx treatment to make sure the engine is not sludged up but might try to consult a independent mechanic later this week. I am curious what you guys find out.

Kev