This is where the variable valve timing comes in. At 15K, the proble is back along with a whirling noise when the car is cold.

Ford Triton Timing Chain Problems If you have a Ford 5.4 camshaft code, lean condition or misfires, this article is for you. My 2008 Edge Ltd. AWD with 8,000 kms. On the other hand, variable valve timing has brought with it some specific issues concerning engine lubrication and … A well known problem with the Ford 5.4 3V engines is the dreaded 'phaser rattle' This happens when the variable cam timing phasers can no longer be controlled by the ECU due to wear in the phaser or lack of oil pressure / volume being delivered to them. Ford 3.5 Ecoboost engine problems — P0016 and P0017 Crankshaft Position – Camshaft Position Correlation. began running rough and stalling followed by the check engine light coming on. At 13 K, Ford went into the engine, replacing all the variable cam timing hardware.

Symptoms of a Bad or Failing Variable Valve Timing (VVT) Solenoid Common signs of a faulty VVT solenoid include the Check Engine Light coming on, dirty engine oil, rough engine idle, and decreased fuel economy. The concept of increasing low- and high-speed engine torque by automatically advancing and retarding valve timing isn’t a new thing. Labor costs are estimated between $157 and $199 while parts are priced between $64 and $92. This is how the cam actuator was born by giving the camshaft the ability to be both advanced and then retarded giving the engine more power throughout its complete RPM range. This engine uses variable camshaft timing (VCT). mechanisms to advance and retard timing to correspond to driver demand. In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. When you see a P0016 or P0017 camshaft position correlation code it means that the ECM has attempted to bring the two variable camshaft actuators into synchronization but has failed to correct the problem.
The VVT systems work by pulsing oil pressure into an hydraulic mechanism that advances and retards the camshaft. A well known problem with the Ford 5.4 3V engines is the dreaded 'phaser rattle' This happens when the variable cam timing phasers can no longer be controlled by the ECU due to wear in the phaser or lack of oil pressure / volume being delivered to them. When trucks lose the ability to precisely control the timing, not only will they set a check engine light code, but can experience rough engine idle and lack of power. The ability to rotate the cam phaser allows the computer to micromanage timing of the camshaft. There are passages in the pump that clog and can cause oil starvation problems. The dealership is in contact with the Ford help line, which claims some new designed part is on the way. It is increasingly being used in combination with variable valve lift systems.

During the 1960s, there were variable camshaft timing gears featuring a torsion spring device that ­retarded valve timing in response to the increased rotating torque needed to turn the camshaft at higher engine speeds. Coupled with tuned intake and exhaust systems, variable valve timing can dramatically ­increase low- and high-speed engine torque, ­increase fuel economy and reduce exhaust emissions.


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