Vct issues
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Vct issues
Okay so its an 2016 F150 5.0. Super crew. I switched out the vcts. All 4. Then while doing so I ripped the valve cover gasket (passenger side). Then broke hvac hose so had to replace that along with draining all the coolant out of the system. I get everything Back together and test drive, about 20 minutes in I start to shudder again and all the lights come on.
i see cel is on so check it and says now I need two new sensors
“A camshaft positioning timing over retarded PO22 bank 2”
”A camshaft positioning timing over advanced or system performance bank 1”
First can anyone tell me where these are located and second should I be thinking of taking it to shop for phasers? Or will these two sensors being replaced solve my issue?
i see cel is on so check it and says now I need two new sensors
“A camshaft positioning timing over retarded PO22 bank 2”
”A camshaft positioning timing over advanced or system performance bank 1”
First can anyone tell me where these are located and second should I be thinking of taking it to shop for phasers? Or will these two sensors being replaced solve my issue?
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i never touched the cams at all. Gonna try driving it again today for 30-40 minutes. See what happens. Normally the dying issue is only after a lot of stop and go when normal operating temp is reached
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Joined: Mar 2021
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Hard to tell now with so much that went on.
With both Banks being reported, something seems common to both sides.
There are 17 listed possible causes.
Among them is wiring shorts, grounds and crosses.
Seems both banks would not fail at the same time leading to wiring or possibly low Oil Pressure on the list.
If one of these is the cause, replacing all the Sensors would not solve the issues.
.
How the system works: Oil pressure is gated into the Phasers by the VCTs command, forcing them to advance Cam timing.
There are 4 position Sensors to tell the computer where the Cams are in their movement.
To allow Cams to Retard, the only way is to open the Phaser oil area and let drain down. This occurs because the Cam Lobes under Valve Spring pressure force the Roller tappet to rotate/ Cam in Retard direction, during operation.
This is how the computer continuously adjusts for max engine Torque across a wider RPM range.
The system needs to gate oil in, allow Oil to escape and positions sensors to tell where and when to make changes, and Oil Pressure to make it all happen.
Good luck.
With both Banks being reported, something seems common to both sides.
There are 17 listed possible causes.
Among them is wiring shorts, grounds and crosses.
Seems both banks would not fail at the same time leading to wiring or possibly low Oil Pressure on the list.
If one of these is the cause, replacing all the Sensors would not solve the issues.
.
How the system works: Oil pressure is gated into the Phasers by the VCTs command, forcing them to advance Cam timing.
There are 4 position Sensors to tell the computer where the Cams are in their movement.
To allow Cams to Retard, the only way is to open the Phaser oil area and let drain down. This occurs because the Cam Lobes under Valve Spring pressure force the Roller tappet to rotate/ Cam in Retard direction, during operation.
This is how the computer continuously adjusts for max engine Torque across a wider RPM range.
The system needs to gate oil in, allow Oil to escape and positions sensors to tell where and when to make changes, and Oil Pressure to make it all happen.
Good luck.
Thread Starter
Junior Member
Joined: Apr 2025
Posts: 3
Likes: 0
Hard to tell now with so much that went on.
With both Banks being reported, something seems common to both sides.
There are 17 listed possible causes.
Among them is wiring shorts, grounds and crosses.
Seems both banks would not fail at the same time leading to wiring or possibly low Oil Pressure on the list.
If one of these is the cause, replacing all the Sensors would not solve the issues.
.
How the system works: Oil pressure is gated into the Phasers by the VCTs command, forcing them to advance Cam timing.
There are 4 position Sensors to tell the computer where the Cams are in their movement.
To allow Cams to Retard, the only way is to open the Phaser oil area and let drain down. This occurs because the Cam Lobes under Valve Spring pressure force the Roller tappet to rotate/ Cam in Retard direction, during operation.
This is how the computer continuously adjusts for max engine Torque across a wider RPM range.
The system needs to gate oil in, allow Oil to escape and positions sensors to tell where and when to make changes, and Oil Pressure to make it all happen.
Good luck.
With both Banks being reported, something seems common to both sides.
There are 17 listed possible causes.
Among them is wiring shorts, grounds and crosses.
Seems both banks would not fail at the same time leading to wiring or possibly low Oil Pressure on the list.
If one of these is the cause, replacing all the Sensors would not solve the issues.
.
How the system works: Oil pressure is gated into the Phasers by the VCTs command, forcing them to advance Cam timing.
There are 4 position Sensors to tell the computer where the Cams are in their movement.
To allow Cams to Retard, the only way is to open the Phaser oil area and let drain down. This occurs because the Cam Lobes under Valve Spring pressure force the Roller tappet to rotate/ Cam in Retard direction, during operation.
This is how the computer continuously adjusts for max engine Torque across a wider RPM range.
The system needs to gate oil in, allow Oil to escape and positions sensors to tell where and when to make changes, and Oil Pressure to make it all happen.
Good luck.
so just came back from hour long drive of nothing but stop and go traffic. As soon as I got home it started to want to stall but never did. CEL came on and it read misfire on #6. I clear the code and runs again but I know that the misfire can be from the vct issue. Will more than likely take it to repair shop down the road. Tell them about ghe trouble with VCTs and hope they figure it out. Will probably never buy “as is” ever again.
i did notice I was a quart low on oil so I made sure to top that off.
i double checked all wire and plugs just to make sure they are seated.
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Joined: Mar 2021
Posts: 4,789
Likes: 2,391
I was just thinking about what sometimes happens is additional trouble is created while trying to solve the original and causes a lot of confusion.
Check the coil for the plugup seating might be loose.
When purchasing an as is you get the other owners' issues along with it.
You must be ready and know how many systems work in order to get involved chasing the parts of that system that could cause issues same as a shop Tech needs to have.
Good luck.
Check the coil for the plugup seating might be loose.
When purchasing an as is you get the other owners' issues along with it.
You must be ready and know how many systems work in order to get involved chasing the parts of that system that could cause issues same as a shop Tech needs to have.
Good luck.