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How to change vct phaser - Cars & Trucks

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You don't even have a vehicle shown here
We don't have that info
This is a free chat room everyone uses the same
Go to You Tube Video & then put in your vehicle
& question.
I doubt you will have the skills needed to do that
at home,way too much work for sure,some professionals
shouldn't attempt it

Posted on Jul 24, 2013

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Posted on Jan 02, 2017

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I have 2005 ford f150 truck 5,4 3 valve eng change the oil pump after eng got hot low oil pressure light come on and eng noise are heard what could it be


well it could be lifters ,it could be rod or main bearings. try adding some lucas oil stabilizer or STP and see if it quiets the noise down .

Feb 06, 2015 | 2005 Ford F-150

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2008 f250 5.4 3 valve no codes no flashing SES lightruns with bank 2 completely dead does not hit on 5 6 7 8 cylinders


Timing chain possible . But more likely Camshaft Phaser for the variable valve timing , do you change you oil regularly ,these can get clogged up . They are controlled by oil pressure.
Variable Camshaft Timing (VCT) System The VCT system consists of an electric hydraulic positioning control solenoid, a camshaft position (CMP) sensor, and a trigger wheel. The CMP trigger wheel has a number of equally spaced teeth equal to the number (n) of cylinders on a bank plus one extra tooth (n+1). Four cylinder and V8 engines use a CMP 4+1 tooth trigger wheel. V6 engines use a CMP 3+1 tooth trigger wheel. The extra tooth placed between the equally spaced teeth represents the CMP signal for that bank. A crankshaft position sensor (CKP) provides the PCM with crankshaft positioning information in 10 degree increments. The cam timing can become advanced to much an cause a low compression problem. You could do a compression test an that would tell you. this vehicle should have at lest 150 psi .

Jan 20, 2015 | Cars & Trucks

1 Answer

2004 f150 5.4 issues with engine running smooth


2 things. The most simple is an air leak in the intake. The engine is getting the same fuel as always, but the additional air is giving you a higher air/fuel ratio. Start the engine, use a pump spray water bottle and mist the intake manifold and any vacuum lines. A change in rpm will reveal a leak. You have a lean knock.

Next, more intense. Look up "Cam Phasers" The knock is a typical clue for this problem. But since the water test above does not cost you anything to try, I mentioned it. I bet the knock disappears around 2000rpm.

What is happening inside your engine is one side is out of time or synch with the other. This is because each "Cam Phaser" sets timing separately for each bank. After 2000rpm the parts are fully extended and the noise disappears.

There are just 2 ways to fix this. Clean the "Cam Phaser" with a solvent that degunks the block or change the Phaser and assume that the bad bank is the one showing lean.

The replacement can be done with a Cheater method or complete frontal disassembly of the engine. A specialty tool is needed for the cheater method(buy, beg, borrow) and one side will probably cost $800. A frontal job, both Phasers is easily $2400.

You might try Risolone, or go to Ford for a Factory chemical. There are also 15 minute cleaners. Replacing oil, filter, and chemical cleaner will be in the $50 range. Might save $800 repair.

May 31, 2014 | 2004 Ford F150

1 Answer

08 ford 5.4 camshaft sensor bank 2 sensor A, where is this located


Don't think the Cam Sensor is the real issue

Not using 5W-20 Full/Syn Oil & changing is part of the issue
The Cam Phasers or VVT Actuators fail
Also the VCT Solenoids clog up & fail

So you better know what your doing & no just be
a parts swapper,because that won't fix a thing

Go to You Tube Video and spend a couple hours
learning about the motor,There are enough problems
you need to educate yourself

Codes have nothing to do with change parts

Have to diagnose the problem that caused the
codes to set

Sep 19, 2013 | Cars & Trucks

1 Answer

Where is vct solenoid


Hi there:A code P0012 refers to the VVT (Variable Valve Timing) or VCT (Variable Camshaft Timing) components and the car's PCM (Powertrain Control Module, also called an ECM).
That consists of a few different components but the P0012 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-********, the engine light will be illluminated and the code will be set. The "A" camshaft is either the intake, left, or front camshaft.


A P0012 DTC trouble code may be caused by one or more of the following:

- Incorrect camshaft timing

- Wiring problems (harness/wiring) in intake timing control valve control solenoid system

- Continuous oil flow to VCT piston chamber

- Failed timing valve control solenoid (stuck open)



On Ford, the VCT solenoid is located at top of cylinder head underneath the valve cover and goes around one camshaft. You will need to remove the valve cover, the timing cover, then remove the timing belt, the camshaft sprockets, and finally the camshafts to remove the vct solenoid as it goes around the camshaft. You can use 2001-2003 models with same engine.



VCT or Variable Cam Timing solenoid is a device used in modern engines to change camshaft position timing in relevance to engine speed and engine timing allowing the engine to produce more horsepower without adding excessive overlap to the camshaft design.


The way the VCT Solenoid works is as follows:
The VCT solenoid works with oil pressure, it receives a signal from the ECM when the camshaft needs to be rotated either in the advanced mode or ******** mode depending on engine load and speed.The VCT solenoid is able to accomplish that by altering the oil flow in the passages that lead to the cam phaser(s), there are passages to advance the valve timing ( open the valves earlier), and passages that direct the oil to ****** the valve timing ( open them later)

The purpose of the VCT or Variable Cam Timing system is to allow the engine to move larger volumes of air in and out of the cylinders to generate maximum horsepower.
Vehicles with DOHC ( Dual Overhead Cam ) engines usually have two VCT solenoids mounted in each cylinder head, one for each camshaft, allowing the Engine Control Computer to activate each VCT timing mechanism in each Camshaft separately.
NOTE: The Cam phaser is mounted on the front of the camshaft(s) it is driven by the engine's timing chain or timing belt depending on the engine's design.



Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jun 20, 2012 | Cars & Trucks

1 Answer

2007 f150 w/p0022. They are recommending to me a new engine. The phasers supposedly have been replaced. Where is the extended warranty you were talking about? Thanks


P0022 would be bank 2 over-********.
Was there noise before the phasers were replaced? There is also sensors, solenoids, controls, etc. for it all. Perhaps it was not the bank 2 cam gear but it was having issues with getting oil. The VCT is changed by hydraulics.
As for a new engine, most likely not. A Dodge dealership diagnosed a truck and said it needed a new engine. I got it in my shop and diagnosed it as plugged cats and it turned out to be, plugged cats.
As for where the warranty is, that question needs to be directed to another source.

Sep 09, 2011 | 2004 Ford F150

1 Answer

How do I change a vct solenoid on a 2007 f150 5.4


The VCT solenoid is located under the valve cover toward the front. There are a total of two solenoids, one on each bank (side). If you look at the valve cover you will see a harness and connector going to the solenoid with the top of the solenoid sticking through the valve cover. Remove the valve cover for the affected side, place a shop rag at the timing chain area to keep debris or bolts from falling in. Unfasten the solenoid and simply pull it straight out. Replace the solenoid, remove the rag and reinstall the cover. Be sure to remove the rag :o)

That being said, the main cause of VCT codes or a noise from the VCT is caused by the camshaft phaser. This is the mechanical part of the VCT system and mounts to the front of the camshaft. It operates by oil pressure that is controlled by computer signals to the solenoid.

If the solenoid is sticking, I've had luck taking a 12 volt power source and applying power and ground to the two pins at the solenoid, touching the terminals a few times. This sometimes frees the solenoid and brings the vehicle back to normal cam timing. A fresh oil change with a factory motorcraft filter will help keep the system clean and free from VCT concerns.

Some aftermarket oil filters will start to come apart, sending paper into the oil channels. This affects the oil pressure, the very pressure that the VCT system needs to work. I hope this info helps. If for any reason you can't give four thumbs up, please request more information. Good luck!

Apr 11, 2011 | 2007 Ford F-150 Harley Davidson

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